CN105991081B - Control device, control method and computer-readable recording medium - Google Patents
Control device, control method and computer-readable recording medium Download PDFInfo
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- CN105991081B CN105991081B CN201610101750.7A CN201610101750A CN105991081B CN 105991081 B CN105991081 B CN 105991081B CN 201610101750 A CN201610101750 A CN 201610101750A CN 105991081 B CN105991081 B CN 105991081B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
- H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
- H02P27/06—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
- H02H7/0833—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors for electric motors with control arrangements
- H02H7/0844—Fail safe control, e.g. by comparing control signal and controlled current, isolating motor on commutation error
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Inverter Devices (AREA)
- Analogue/Digital Conversion (AREA)
- Tests Of Circuit Breakers, Generators, And Electric Motors (AREA)
- Control Of Ac Motors In General (AREA)
Abstract
The present invention provides a kind of control device, control method and program.Control device of the invention when at least one is not operating normally in one or more A/D conversion circuits, is able to detect it and is not operating normally in the air-conditioning system of Driven by inverter motor, and can safely stop air-conditioning system.Control device has one or more A/D converter sections and determination unit.The voltage that the A/D converter section detects voltage detection department in the circuit of object apparatus is converted to digital value from the analogue value.The determination unit calculates the average value of the digital value after converting by the A/D converter section, difference between a reference value of the predetermined average value of average value in calculating and the voltage based on certain period determines that the A/D converter section is not operating normally out of the scope of the regulations.
Description
Technical field
The present invention relates to a kind of control device, control method and computer-readable recording mediums.
Background technique
In the system of Driven by inverter motor, generates and the switch element for the inverter for constituting drive motor is controlled
Control signal.For example, generating and being driven to composition in the air-conditioning system with air conditioner (hereinafter referred to as air conditioner)
The control signal that the switch element of the inverter of compressor motor in compressor is controlled.In general, inverter is in order to by horse
Up to control at the movement for carrying out being suitable for system mode the various voltages (analogue value) in detection system.In addition, it is desirable to according to
The voltage detected generates the control signal controlled the switch element for constituting inverter.It will be as at this point, using sometimes
The voltage of the analogue value is converted to the A/D conversion circuit of digital value.
In patent document 1, the technology for detecting following range internal fault is recorded as the relevant technologies, that is, input is made
For the analogue value of voltage source voltage and be converted into digital signal A/D conversion circuit output voltage values, although in overcharge
In state, that is, normal voltage range between state and over-discharge state, but become with the actual analog voltage of voltage source not
Failure in the range of same digital value.
Patent document 1: Japanese Unexamined Patent Publication 2013-234851 bulletin
However, A/D conversion circuit (simulates the various voltages in system in the air-conditioning system of Driven by inverter motor
Value) be converted to digital value.Moreover, the control signal controlled the switch element for constituting inverter is converted according to by A/D
Circuit converted after digital value and be determined, so that motor be made suitably to be acted.In this air-conditioning system, in A/
In the case where generating exception in D conversion circuit, A/D conversion circuit is by the various voltages different from the actual value in air-conditioning system
(analogue value) is converted to digital value.Therefore, the control signal controlled the switch element for constituting inverter is likely to become
Unfavorable control signal.As a result, there is a possibility that inverter unfavourably drive motor, and system becomes abnormality.
Summary of the invention
Then, the purpose of the present invention is to provide a kind of control device for being able to solve the above problem, control method and journeys
Sequence.
1st mode according to the present invention, control device have: one or more A/D converter sections, in the circuit of object apparatus
The interior voltage for detecting voltage detection department is converted to digital value from the analogue value；And determination unit, it calculates and passes through the A/D converter section
And the average value of the digital value after converting, the average value in calculating and the voltage based on certain period is predetermined
Average value a reference value between difference out of the scope of the regulations, determine that the A/D converter section is not operating normally.
2nd mode according to the present invention, above-mentioned control device have control unit, which is determined as in the determination unit
In the case that at least one of the A/D converter section is not operating normally, the equipment stopping movement equipped with the present apparatus is controlled.
3rd mode according to the present invention, in above-mentioned control device, the voltage detection department is detected based in motor
The voltage of the three-phase alternating current of circulation, the A/D converter section convert the voltage based on the three-phase alternating current.
4th mode according to the present invention, in control method, circuit of one or more A/D converter sections in object apparatus
The interior voltage for detecting voltage detection department is converted to digital value from the analogue value, and determination unit calculating passes through the A/D converter section
The average value of the digital value after conversion, average value in calculating are predetermined with the voltage based on certain period
Difference between a reference value of average value out of the scope of the regulations, is determined as that the A/D converter section is not operating normally.
5th mode according to the present invention, program function computer as following mechanism: one or more A/D
Switching mechanism, the voltage for detecting voltage detection department in the circuit of object apparatus are converted to digital value from the analogue value；And sentence
Determine mechanism, calculate the average value of the digital value after converting by the A/D switching mechanism, the average value calculated with
Difference between a reference value of the predetermined average value of the voltage based on certain period outside the specified scope the case where
Under, it is determined as that the A/D switching mechanism is not operating normally.
The control device of embodiment according to the present invention, in the air-conditioning system of Driven by inverter motor, at one or
When at least one in multiple A/D conversion circuits is not operating normally i.e. abnormal, it is able to detect its exception, and can safely stop sky
Adjusting system.
Detailed description of the invention
Fig. 1 is the room indicated in the air-conditioning system according to the first embodiment of the present invention for being used in and having control device
First figure of the structure of outer machine.
Fig. 2 is the figure for indicating the control signal of control inverter according to the first embodiment of the present invention.
Fig. 3 is the figure for indicating the voltage of voltage detection department detection according to the first embodiment of the present invention.
Fig. 4 is the output voltage for the motor for indicating that drive waveforms generating unit according to the first embodiment of the present invention has
Target value figure.
Fig. 5 is to indicate that outdoor unit according to the first embodiment of the present invention generates the processing of the alternating voltage of drive motor
The figure of process.
Fig. 6 is the abnormal processing for indicating outdoor machine testing A/D conversion circuit according to the first embodiment of the present invention
The figure of process.
Fig. 7 is the room indicated in the air-conditioning system according to the first embodiment of the present invention for being used in and having control device
Second figure of the structure of outer machine.
Fig. 8 is the room indicated in the air-conditioning system according to the second embodiment of the present invention for being used in and having control device
First figure of the structure of outer machine.
Fig. 9 is the abnormal processing for indicating outdoor machine testing A/D conversion circuit according to the second embodiment of the present invention
The figure of process.
Figure 10 is the figure for indicating the voltage of voltage detection department detection according to the second embodiment of the present invention.
Figure 11 is indicated in the air-conditioning system according to the second embodiment of the present invention for being used in and having control device
Second figure of the structure of outdoor unit.
Figure 12 is indicated in the air-conditioning system according to the third embodiment of the present invention for being used in and having control device
First figure of the structure of outdoor unit.
Figure 13 is indicated in the air-conditioning system according to the third embodiment of the present invention for being used in and having control device
Second figure of the structure of outdoor unit.
Symbol description
1- outdoor unit, 10- AC power source, 20-AC-DC converter, 30- inverter, 40- motor, 50- control device,
201- reactor, 202- rectifier diode storehouse, 203- capacitor, 301,302,303,304,305,306- switch element,
501,508- test section, 502- voltage detection department, 503,504-A/D conversion circuit, 505- drive signal generating unit, 506- crystal
Pipe circuit, 507-A/D convert determination unit, 509- sensor, 510,511- multiplexer, 512- sensor voltage converter section.
Specific embodiment
<first embodiment>
Hereinafter, embodiment is described in detail with reference to attached drawing.
Firstly, to the outdoor in the air-conditioning system according to the first embodiment of the present invention for being used in and having control device
The structure of machine is illustrated.
As shown in Figure 1, outdoor unit 1 (object apparatus) according to the present embodiment has AC power source 10, AC
(Alternative Current)-DC (Direct Current) converter 20, inverter 30, motor 40 and control device 50.
AC power source 10 generates alternating voltage, and is output to AC-DC converter 20.
AC-DC converter 20 has reactor 201, rectifier diode storehouse 202 and capacitor 203.
The rectifier diode storehouse 202 that AC-DC converter 20 has to from the alternating voltage that AC power source 10 inputs into
Row rectification.
Reactor 201 and capacitor 203 constitute the smoothing filter for inhibiting the harmonic wave of AC power source 10, and reduce by whole
Flow the pulsation of the voltage after diode stack 202 is rectified.
Also, AC-DC converter 20 is by the direct voltage output after rectification to inverter 30.
The DC voltage inputted from AC-DC converter 20 is converted to the alternating current for being used for drive motor 40 by inverter 30
Pressure.Inverter 30 is for example made of 6 switch elements.Switch element 301~306 is respectively from control device 50 input control electricity
Pressure is switched to on-state (on state) when the control voltage inputted is Hi state, when the control voltage inputted is
Dissengaged positions (nonconducting state) is switched to when Lo state.Moreover, inverter 30 generates U phase voltage, the V of drive motor 40 respectively
Phase voltage, W phase voltage.Controlling voltage is, for example, PWM as shown in Figure 2 (Pulse Width Modulation) signal.Control
Voltage is the voltage in the period sufficiently shorter than a cycle of the voltage of 30 drive motor 40 of inverter.In each of control signal
A period, the pulse width for controlling voltage change, so that the amplitude that inverter 30 is output to the alternating voltage of motor 40 exists
Each moment becomes suitable size.
Switch element 301~306 is respectively such as IGBT (Insulated Gate Bipolar Transistor) or function
Rate MOSFET (Metal Oxide Semiconductor Field Effect Transistor).
Motor 40 is acted according to the alternating voltage that inverter 30 exports.Motor 40 is, for example, the compressor of air conditioner
Compressor motor.
Control device 50 has test section 501,502, two A/D of voltage detection department (Analog to Digital) conversion
Circuit 503,504 (A/D converter section), drive signal generating unit 505, transistor circuit 506 and A/D conversion determination unit 507 (determine
Portion).
Test section 501 detects the current or voltage in outdoor unit 1.For example, test section 501 is resistance, and detect in motor
The three-phase alternating current to circulate in 40 i.e. motor current.For example, being on-state in switch element 301,304,306, and switch
When element 302,303,305 is dissengaged positions, electric current corresponding with the control voltage of control switch element 301~306 is from switch
Element 301 is input to motor 40 via the wiring for corresponding to U phase, and from motor 40 via corresponding with V phase and W each respectively
Wiring is output to two switch elements 304,306.To, test section 501 is on-state in switch element 301,304,306,
And switch element 302,303,305 be dissengaged positions when, be able to detect from switch element 301 via correspond to U phase wiring it is defeated
Enter the electric current to motor 40.
Also, for example, being on-state in switch element 301,303,306, and switch element 302,304,305 is cutting
When state, electric current corresponding with the control voltage of control switch element 301~306 from two switch elements 301,303 via point
Each wiring not corresponding with U phase and V is input to motor 40, and is output to switch from motor 40 via the wiring for corresponding to W phase
Element 306.To which test section 501 is on-state in switch element 301,303,306, and switch element 302,304,305 is
When dissengaged positions, it is able to detect the electric current for being output to switch element 306 via the wiring for corresponding to W phase from motor 40.
Also, for example, being on-state in switch element 302,303,306, and switch element 301,304,305 is cutting
When state, electric current corresponding with the control voltage of control switch element 301~306 is from switch element 303 via corresponding to V phase
Wiring is input to motor 40, and is output to two switch elements from motor 40 via each wiring corresponding with U phase and W respectively
302,306.To which test section 501 is on-state in switch element 302,303,306, and switch element 301,304,305 is
When dissengaged positions, it is able to detect the electric current for being input to motor 40 via the wiring for corresponding to V phase from switch element 303.
Also, for example, being on-state in switch element 302,303,305, and switch element 301,304,306 is cutting
When state, electric current corresponding with the control voltage of control switch element 301~306 from two switch elements 303,305 via point
Each wiring not corresponding with V phase and W is input to motor 40, and is output to switch from motor 40 via the wiring for corresponding to U phase
Element 302.To which test section 501 is on-state in switch element 302,303,305, and switch element 301,304,306 is
When dissengaged positions, it is able to detect the electric current for being output to switch element 302 via the wiring for corresponding to U phase from motor 40.
Also, for example, being on-state in switch element 302,304,305, and switch element 301,303,306 is cutting
When state, electric current corresponding with the control voltage of control switch element 301~306 is from switch element 305 via corresponding to W phase
Wiring is input to motor 40, and is output to two switch elements from motor 40 via each wiring corresponding with U phase and V respectively
302,304.To which test section 501 is on-state in switch element 302,304,305, and switch element 301,303,306 is
When dissengaged positions, it is able to detect the electric current for being input to motor 40 via the wiring for corresponding to W phase from switch element 305.
Also, for example, being on-state in switch element 301,304,305, and switch element 302,303,306 is cutting
When state, electric current corresponding with the control voltage of control switch element 301~306 from two switch elements 301,305 via point
Each wiring not corresponding with U phase and W is input to motor 40, and is output to switch from motor 40 via the wiring for corresponding to V phase
Element 304.To which test section 501 is on-state in switch element 301,304,305, and switch element 302,303,306 is
When dissengaged positions, it is able to detect the electric current for being output to switch element 304 via the wiring for corresponding to V phase from motor 40.
In addition, switch element 301,303,305 be on-state, and switch element 302,304,306 be dissengaged positions when,
Or switch element 302,304,306 be on-state, and switch element 301,303,305 be dissengaged positions when motor electricity
Stream is, the loop current of motor (in the case where becoming Hi state at the same time or becoming Lo state simultaneously, make electric current motor around
The electric current to circulate in group coil) it circulates in the diode being connect respectively with switch element 301~306.Also, predefine horse
Average value up to two periods of electric current is 0, and the electric current that test section 501 detects is for amplitude in positive value side centered on 0 ampere
With the pseudo sine wave of minus value side fluctuation.
Voltage detection department 502 detects voltage corresponding with the electric current that test section 501 detects.For example, as shown in figure 3, electricity
The corresponding voltage of the electric current detected with test section 501 is converted to center and the reference voltage (example of amplitude by pressure test section 502
Such as, 2.5V) consistent alternating voltage, and b1, a1, b2, a2, b3, a3 ... at the time of export.In Fig. 3, horizontal axis is indicated
Phase.Also, the longitudinal axis indicates amplitude.The amplitude of alternating voltage corresponding with U phase, V phase, W respectively shown in Fig. 3 is 1.5V,
Phase offsets one from another 120 degree.
Two A/D conversion circuits 503,504 obtain the voltage that voltage detection department 502 exports at each regulation moment respectively.
When alternating voltage corresponding with U phase, V phase, W is in phase relation shown in Fig. 4 respectively, at 0 degree~60 degree
In be that the voltage A corresponding to U phase of ceiling voltage is, be input to motor from switch element 301 via the wiring for corresponding to U phase
40, and the voltage of two switch elements 304,306 is output to from motor 40 via each wiring corresponding with V phase and W respectively.And
And be that the voltage B corresponding to W phase of minimum voltage is in 0 degree~120 degree, from two switch elements 301,303 via respectively
Each wiring corresponding with U phase and V is input to motor 40, and is output to switch member from motor 40 via the wiring for corresponding to W phase
The voltage of part 306.It also, is that the voltage A corresponding to V phase of ceiling voltage is in 60 degree~180 degree, from switch element 303
It is input to motor 40 via the wiring for corresponding to V phase, and is exported from motor 40 via each wiring corresponding with U phase and W respectively
To the voltage of two switch elements 302,306.It also, is the voltage B corresponding to U phase of minimum voltage in 120 degree~240 degree
To be input to motor 40 from two switch elements 304,306 via each wiring corresponding with V phase and W respectively, and from motor 40
The voltage of switch element 302 is output to via the wiring for corresponding to U phase.It also, is ceiling voltage in 180 degree~300 degree
Voltage A corresponding to W phase is to be input to motor 40 from switch element 305 via the wiring for corresponding to W phase, and pass through from motor 40
The voltage of two switch elements 302,304 is output to by each wiring corresponding with U phase and V respectively.Also, 240 degree~360
The voltage B corresponding to V phase in degree being minimum voltage is electric current corresponding with the control voltage of control switch element 301~306
It is input to motor 40 from two switch elements 301,305 via each wiring corresponding with U phase and W respectively, and is passed through from motor 40
Wiring by corresponding to V phase is output to the voltage of switch element 304.
To which A/D conversion circuit 503 is on-state in switch element 301,304,306 in 0 degree~60 degree, and is opened
Close each regulation moment that element 302,303,305 is dissengaged positions (for example, a1, a2, a3 in each Fig. 4 ... point
Not adjacent time interval), the voltage A in Fig. 3 is obtained from voltage detection department 502.Also, A/D conversion circuit 503 60 degree~
In 180 degree switch element 302,303,306 be on-state, and switch element 301,304,305 be dissengaged positions it is each
It provides the moment, obtains the voltage A in Fig. 3 from voltage detection department 502.Also, A/D conversion circuit 503 is in 180 degree~300 degree
Switch element 302,304,305 be on-state, and switch element 301,303,306 be dissengaged positions each regulation when
It carves, obtains the voltage A in Fig. 3 from voltage detection department 502.A/D conversion circuit 503 can obtain at each regulation moment as a result,
Voltage A shown in Fig. 4 is input to each electricity of motor 40 from inverter 30 via wiring corresponding with U phase, V phase, W respectively
Voltage A corresponding with maximum voltage in pressure.
Also, for example, A/D conversion circuit 504 is to connect shape in switch element 301,303,306 in 0 degree~120 degree
State, and switch element 302,304,305 be dissengaged positions each regulation moment (for example, b1, b2 in each Fig. 4,
B3 ... the adjacent time interval of difference), obtain the voltage B in Fig. 3 from voltage detection department 502.Also, A/D conversion circuit
504 in 120 degree~240 degree switch element 302,303,305 be on-state, and switch element 301,304,306 be cut
Each regulation moment of disconnected state obtains the voltage B in Fig. 3 from voltage detection department 502.Also, A/D conversion circuit 504 is 240
It in switch element 301,304,305 is on-state in~360 degree of degree, and switch element 302,303,306 is dissengaged positions
Each regulation moment obtains the voltage B in Fig. 3 from voltage detection department 502.A/D conversion circuit 504 can be in each rule as a result,
Timing, which is carved, obtains waveform B shown in Fig. 4, i.e., from motor 40 via each electricity that wiring corresponding with U phase, V phase, W exports respectively
Voltage B corresponding with minimum voltage in pressure.
Acquired voltage A (analogue value) is converted to digital value by A/D conversion circuit 503.Moreover, A/D conversion circuit 503
Digital value is output to drive signal generating unit 505 and A/D conversion determination unit 507.
Also, acquired voltage B (analogue value) is converted to digital value by A/D conversion circuit 504.Moreover, A/D conversion electricity
Digital value is output to drive signal generating unit 505 on road 504 and A/D converts determination unit 507.
Drive signal generating unit 505 generates the control controlled the switch element 301~306 for constituting inverter 30 and believes
Number.Drive signal generating unit 505 generates the pwm signal for example controlled switch element 301~306.At this point, driving signal
Generating unit 505 can also will indicate the voltage A of digital value that input from A/D conversion circuit 503 and indicate from A/D conversion circuit
The voltage B of the digital value of 504 inputs is fed back into the generation of pwm signal.
Control signal generated is output to inverter 30 via transistor circuit 506 by drive signal generating unit 505.And
And control signal generated is output to A/D conversion determination unit 507 by drive signal generating unit 505.
Transistor circuit 506, which is converted to the control signal inputted from drive signal generating unit 505, can drive inverter
30 signal is simultaneously output to inverter 30.Transistor circuit 506 is, for example, buffer circuit, and will be suitable for as shown in Figure 2 each
The control signal at moment is output to inverter 30.
In outdoor unit 1, test section 501 detects the motor current to circulate in motor 40.Two A/D conversion circuits 503,
The corresponding voltage of the motor current detected with test section 501 is converted to digital value from the analogue value by 504.A/D converts determination unit
507 calculate and will take 1/2nd times by the certain period phase adduction of digital value after two conversions of A/D conversion circuits 503,504 respectively
Value average value.Moreover, reference voltage (the example determined according to the average value 0 of certain period of predetermined motor current
Such as 2.5V) and the difference of average value that is calculated when except prescribed limit (such as 1.5V~3.5V), A/D converts determination unit 507
Determine that at least one of two A/D conversion circuits 503,504 are not operating normally.
Then, the processing carried out to outdoor unit 1 according to the present embodiment is illustrated.
In addition, here, being illustrated by taking outdoor unit 1 shown in FIG. 1 as an example to processing.
Firstly, the single-phase AC voltage that AC power source 10 is exported is rectified by outdoor unit 1 and generates DC voltage,
And the processing that the normal condition of the alternating voltage of drive motor 40 is generated from DC voltage generated is illustrated.
Illustrate that the outdoor unit 1 of present embodiment according to figure 5 is generating the alternating voltage of drive motor 40 just below
The process flow of normal state.
The single-phase AC voltage of phase shifting 180 degree is output to AC-DC transformation by the AC power source 10 that outdoor unit 1 has
Device 20.
The rectifier diode storehouse 202 that AC-DC converter 20 has is from 10 input single-phase alternating voltage (step of AC power source
S1).The single-phase AC voltage inputted is carried out full-wave rectification (step S2) by rectifier diode storehouse 202.
Reactor 201 and capacitor 203 constitute smoothing filter, and the voltage after rectification is smoothed (step S3).
Moreover, reactor 201 and capacitor 203 are by the direct voltage output after smoothing to inverter 30.
Inverter 30 is then generated the exchange for being used for drive motor 40 in input direct-current voltage by the DC voltage inputted
Voltage (step S4).Alternating voltage generated is output to motor 40 by inverter 30.
Motor 40 then acts (step according to the alternating voltage inputted when from 30 input ac voltage of inverter
S5)。
Then, the processing of the normal condition with outdoor unit 1 is carried out parallel, two A/D conversion circuits 503,504 of detection
Abnormal processing be illustrated.
Illustrate below it is that the processing with the normal condition of outdoor unit 1 of present embodiment according to figure 6 carries out parallel,
Detect the abnormal process flow of two A/D conversion circuits 503,504.
And then the processing for the step 5 that outdoor unit 1 carries out, A/D convert whether in operation determination unit 507 determines motor 40
(step S6).Specifically, A/D conversion determination unit 507 for example obtains drive signal generating unit from drive signal generating unit 505
Whether 505 export the information of control signal to transistor circuit 506.Moreover, A/D, which converts determination unit 507, is obtaining expression from drive
When dynamic signal generator 505 exports the information of control signal to transistor circuit 506, it is determined as motor 40 in operation.Also,
A/D converts determination unit 507 and indicates not exporting control signal to transistor circuit 506 from drive signal generating unit 505 in acquisition
When information, it is determined as motor 40 not in operation.
A/D, which converts determination unit 507, (in step S6, NO), terminates the place of outdoor unit 1 when determining motor 40 not in operation
Reason.
Also, A/D converts determination unit 507 and (in step S6, YES), turns to two A/D when determining motor 40 in operation
It changes circuit 503,504 and exports the upper side and lower side point for obtaining the motor current detected in normal state with test section 501 respectively
The indication signal of not corresponding voltage.In addition, voltage corresponding with the upside of motor current refers to from inverter 30 via respectively
And it is (shown in Fig. 4 that U phase, V phase, the corresponding wiring of W are input to the voltage corresponding with maximum voltage in each voltage of motor 40
Voltage A).Also, voltage corresponding with the downside of motor current refers to from motor 40 via corresponding with U phase, V phase, W respectively
Voltage corresponding with maximum voltage (voltage B shown in Fig. 4) in each voltage of wiring output.
In normal state, test section 501 detects the motor current to circulate in motor 40.Also, voltage detection department 502
Detect voltage corresponding with the motor current that test section 501 detects.
If two A/D conversion circuits 503,504 convert 507 input indicative signal of determination unit from A/D respectively, obtain from drive
Information at the time of dynamic signal generator 505 is output to the control signal of transistor circuit 506.Moreover, two A/D conversion circuits
503,504 information at the time of be output to the control signal of transistor circuit 506 according to drive signal generating unit 505 respectively, every
One regulation moment obtained voltage (step corresponding with the upper side and lower side of motor current that voltage detection department 502 exports
S7).Specifically, two A/D conversion circuits 503,504 are output to transistor circuit by drive signal generating unit 505 respectively
Information at the time of 506 control signal and be informed in U phase, V phase, W phase in each moment as shown in Figure 2 and be to turn on state respectively also
It is turned off state.To, for example, when voltage corresponding with U phase, V phase, W is in phase relation shown in Fig. 4 respectively, A/D
Conversion circuit 503 is on-state, and switch element 302,303,305 in switch element 301,304,306 in 0 degree~60 degree
For dissengaged positions each regulation moment (for example, a1, a2, a3 in each Fig. 4 ... the adjacent time interval of difference)
Obtain the voltage A that voltage detection department 502 exports.Also, A/D conversion circuit 503 in 60 degree~180 degree switch element 302,
303,306 be on-state, and switch element 301,304,305 is each regulation moment of dissengaged positions from voltage detection department
502 obtain voltage A.Also, A/D conversion circuit 503 is to connect shape in switch element 302,304,305 in 180 degree~300 degree
State, and switch element 301,303,306 is to obtain the voltage A of the output of voltage detection department 502 each regulation moment of dissengaged positions.
A/D conversion circuit 503 can obtain voltage A shown in Fig. 4 at each regulation moment as a result, i.e., from inverter 30 via respectively
And U phase, V phase, the corresponding wiring of W are input to the voltage A corresponding with maximum voltage in each voltage of motor 40.
Also, for example, A/D conversion circuit 504 is to connect shape in switch element 301,303,306 in 0 degree~120 degree
State, and switch element 302,304,305 be dissengaged positions each regulation moment (for example, b1, b2 in each Fig. 4,
B3 ... the adjacent time interval of difference), obtain voltage B from voltage detection department 502.Also, A/D conversion circuit 504 exists
In 120 degree~240 degree switch element 302,303,305 be on-state, and switch element 301,304,306 be dissengaged positions
Each regulation moment, from voltage detection department 502 obtain voltage B.Also, A/D conversion circuit 504 in 240 degree~360 degree
Switch element 301,304,305 is on-state, and switch element 302,303,306 is each regulation moment of dissengaged positions,
Voltage B is obtained from voltage detection department 502.A/D conversion circuit 504 can obtain wave shown in Fig. 4 at each regulation moment as a result,
Shape B, i.e., from motor 40 via corresponding with maximum voltage respectively and in each voltage of the corresponding wiring output of U phase, V phase, W
Voltage B.
Acquired voltage A (analogue value) is converted to digital value by A/D conversion circuit 503.Moreover, A/D conversion circuit 503
Digital value is output to drive signal generating unit 505 and A/D conversion determination unit 507.
Also, acquired voltage B (analogue value) is converted to digital value by A/D conversion circuit 504.Moreover, A/D conversion electricity
Digital value is output to drive signal generating unit 505 on road 504 and A/D converts determination unit 507.
A/D converts determination unit 507 from the input of A/D conversion circuit 503 and voltage A (electricity corresponding with the upside of motor current
Pressure) corresponding digital value.Also, A/D converts determination unit 507 from the input of A/D conversion circuit 504 and voltage B (with motor current
The corresponding voltage in downside) corresponding digital value.Moreover, the A/D conversion calculating of determination unit 507 will be corresponding with the voltage A inputted
Phase adduction takes the average value (step S8) of 1/2nd times of value during digital value and digital value corresponding with voltage B are certain.Here,
Be during certain average value it is predetermined, for example will be during two periodic components that 360 degree shown in Fig. 3 are a cycle
Deng.A/D conversion determination unit 507 predefines the phase adduction during calculating is certain by the voltage A inputted and voltage B and takes 1/2nd
Become reference voltage (being 2.5V when voltage shown in Fig. 3) again when the average value of value.
A/D converts determination unit 507 and determines calculated average value and certain period according to predetermined motor current
Average value and difference between a reference value that determines whether within the specified scope (step S9).
A/D convert determination unit 507 the average value that is calculated with according to predetermined motor current it is certain during
Average value and difference between a reference value that determines outside the specified scope when (in step S9, NO), be determined as A/D conversion circuit
At least one party in 503 and 504 is not operating normally.For example, A/D conversion determination unit 507 calculates and is corresponding to the two of motor current
The certain period phase adduction of the digital value inputted respectively from two A/D conversion circuits 503,504 is taken 1/2nd during a period
The average value of value again.Moreover, A/D converts the benchmark that determination unit 507 is used in the average value and voltage detection department 502 calculated
When difference between voltage 2.5V is 1V or more, determine that A/D conversion circuit 503 is not operating normally.
Also, A/D conversion determination unit 507 (control unit) makes the equipment equipped with the control device 50 i.e. stopping of outdoor unit 1
It acts (abending) (step S10).
Also, A/D convert determination unit 507 the average value that is calculated with according to the one of predetermined motor current periodically
Between average value and difference between a reference value that determines within the specified scope when (in step S9, YES), be determined as normal shape
State, and return to the processing of step S6.
More than, to the process flow of the outdoor unit 1 according to the first embodiment of the present invention for having control device 50 into
Explanation is gone.In the processing of above-mentioned outdoor unit 1, test section 501 detects the motor current to circulate in motor 40.Voltage detecting
Detect voltage corresponding with the electric current that test section 501 detects in portion 502.Two A/D conversion circuits 503,504 respectively examine voltage
The voltage that survey portion 502 detects is converted to digital value from the analogue value.A/D converts the calculating of determination unit 507 will be respectively according to two A/D
The certain period phase adduction of digital value after the conversion of conversion circuit 503,504 takes the average value of 1/2nd times of value.Also, A/D turns
Change determination unit 507 the average value that is calculated with according to predetermined motor current it is certain during average value 0 and determine
Reference voltage (such as 2.5V) between difference when prescribed limit (such as 1.5V~3.5V) is outer, be determined as two A/D turn
Circuit 503,504 is changed not to be operating normally.Also, A/D conversion determination unit 507 makes the equipment equipped with control device 50 i.e. outdoor unit
1 stopping movement.
As a result, in the outdoor unit 1 of 30 drive motor 40 of inverter, in two A/D conversion circuits 503,504 at least
When one side is not operating normally i.e. abnormal, it is able to detect its exception, and can safely stop the outdoor for having control device 50
Machine 1.In addition, the air-conditioning system comprising outdoor unit 1 can be protected.
In addition, A/D conversion circuit according to the first embodiment of the present invention is not limited to multiple A/D conversion circuits.
As long as A/D conversion circuit can high speed motion, and can be obtained by A/D conversion circuit corresponding with the upside of motor current
Voltage, that is, voltage A and voltage corresponding with the downside of motor current, that is, voltage B, can will be at voltage A and voltage B respectively difference
Reason, then as shown in fig. 7, can be by an A/D conversion circuit 503 by the voltage of the motor current detected according to test section 501
Digital value is converted to from the analogue value.Furthermore, it is also possible to which according to the digital value that A/D conversion circuit 503 exports, A/D converts determination unit
507 determine the abnormal operation of A/D conversion circuit 503.
<second embodiment>
Then, illustrate the room in the air-conditioning system according to the second embodiment of the present invention for being used in and having control device
The structure of outer machine.
As shown in figure 8, identically as outdoor unit 1 according to first embodiment, second embodiment according to the present invention
Outdoor unit 1 have AC power source 10, AC-DC converter 20, inverter 30, motor 40 and control device 50.
But according to the control device of second embodiment 50 on the basis of control device 50 according to first embodiment
On, it is also equipped with test section 508.
Also, test section 501 is connected between switch element 302 and the negative voltage side terminal of AC power source 10.Therefore, inverse
Become the electric current corresponding to U phase in device 30 independently of electric current corresponding with V phase and W, from switch element 302 via test section
501 are flowed into the negative voltage side terminal of AC power source 10.
Also, test section 508 is connected between switch element 304 and the negative voltage side terminal of AC power source 10.Therefore, inverse
Become the electric current corresponding to V phase in device 30 independently of electric current corresponding with U phase and W, from switch element 304 via test section
508 are flowed into the negative voltage side terminal of AC power source 10.
Also, switch element 306 is connected in series in the negative voltage side terminal of AC power source 10.Therefore, in inverter 30
Electric current corresponding to W phase is fed directly to AC power source 10 from switch element 306 independently of electric current corresponding with U phase and V
Negative voltage side terminal.
By above structure, test section 501 can individually detect the electric current corresponding to U phase.Also, 508 energy of test section
Enough electric currents individually detected corresponding to V phase.
Then, illustrate with the processing of the normal condition of outdoor unit 1 carry out parallel, detect two A/D conversion circuits 503,
504 abnormal processing.In addition, the single-phase AC voltage that AC power source 10 exports is rectified about outdoor unit 1 and is generated
DC voltage, and the processing of the normal condition by the alternating voltage of DC voltage generated generation drive motor 40, Neng Goukao
It is identical as processing according to first embodiment for considering.
Being carried out parallel with the processing of the normal condition of outdoor unit 1 according to the present embodiment shown in Fig. 9 as described below,
Detect the abnormal process flow of two A/D conversion circuits 503,504.
And then the processing for the step S5 that outdoor unit 1 carries out, A/D conversion determination unit 507 determine whether motor 40 is running
In (step S21).Specifically, A/D conversion determination unit 507 for example obtains driving signal from drive signal generating unit 505 and generates
Whether portion 505 exports the information of control signal to transistor circuit 506.Moreover, A/D convert determination unit 507 obtain indicate from
When drive signal generating unit 505 exports the information of control signal to transistor circuit 506, it is determined as motor 40 in operation.And
And A/D conversion determination unit 507 indicates not exporting control signal to transistor circuit 506 from drive signal generating unit 505 in acquisition
Information when, be determined as motor 40 not in operation.
A/D, which converts determination unit 507, (in step S21, NO), terminates outdoor unit 1 when being determined as motor 40 not in operation
Processing.
Also, A/D converts determination unit 507 in the case where being determined as motor 40 in operation (in step S21, YES), right
The output of A/D conversion circuit 503 obtains voltage corresponding with the U for the motor current that test section 501 detects in normal state
Indication signal, the V of the motor current detected in normal state with test section 508 is obtained to the output of A/D conversion circuit 504
The indication signal of corresponding voltage.In addition, voltage corresponding with the U of motor current is, for example, voltage U shown in Fig. 10.And
And voltage corresponding with the V of motor current is, for example, voltage V shown in Figure 10.Also, electricity corresponding with the W of motor current
Pressure for example, voltage W shown in Figure 10.
Two A/D conversion circuits 503,504 are obtained when converting 507 input indicative signal of determination unit from A/D respectively from drive
Information at the time of dynamic signal generator 505 is output to the control signal of transistor circuit 506.
A/D conversion circuit 503 according to drive signal generating unit 505 be output to transistor circuit 506 control signal when
Information is carved, obtains the voltage C (step corresponding with the U of motor current that voltage detection department 502 exports at each regulation moment
S22).Also, A/D conversion circuit 504 is output to the control signal of transistor circuit 506 according to drive signal generating unit 505
Time information obtains the voltage D (step corresponding with the V of motor current that voltage detection department 502 exports at each regulation moment
S23)。
Acquired voltage C (analogue value) is converted to digital value by A/D conversion circuit 503.Moreover, A/D conversion circuit 503
Digital value is output to drive signal generating unit 505 and A/D conversion determination unit 507.
Also, acquired voltage D (analogue value) is converted to digital value by A/D conversion circuit 504.Moreover, A/D conversion electricity
Digital value is output to drive signal generating unit 505 on road 504 and A/D converts determination unit 507.
Predefine a cycle of the motor current of each voltage C, D that two A/D conversion circuits 503,504 obtain respectively
Interior average value is 0.Therefore, A/D converts determination unit 507 for number corresponding with the voltage C inputted from A/D conversion circuit 503
(such as two periods of motor current) phase adduction calculates average value (step S24) during value is certain.
A/D conversion determination unit 507 determines the average value that A/D conversion circuit 503 is calculated and according to predetermined motor
Electric current it is certain during average value and difference between a reference value (such as 2.5V) that determines whether prescribed limit (such as
1.5V~3.5V) interior (step S25).
A/D convert average value that determination unit 507 is calculated in A/D conversion circuit 503 with according to predetermined motor electricity
Stream it is certain during average value and difference between a reference value (such as 2.5V) that determines prescribed limit (such as 1.5V~
When 3.5V) outer (in step S25, NO), it is determined as that A/D conversion circuit 503 is not operating normally.
Also, it is dynamic that A/D conversion determination unit 507 (control unit) stops the equipment equipped with control device 50 i.e. outdoor unit 1
Make (abending) (step S26).
Also, A/D converts the average value that determination unit 507 is calculated in A/D conversion circuit 503 and according to predetermined motor
Electric current it is certain during average value and difference between a reference value that determines within the specified scope when (in step S25, YES),
By certain period (such as a cycle of the motor current) phase of digital value corresponding with the voltage D inputted from A/D conversion circuit 504
Adduction calculates average value (step S27).
A/D convert determination unit 507 determine A/D conversion circuit 504 calculate average value with according to certain period it is preparatory really
Whether the average value of fixed motor current and difference between a reference value that determines are in prescribed limit (such as 1.5V~3.5V)
(step S28).
A/D converts the average value that determination unit 507 is calculated in A/D conversion circuit 504 and according to predetermined motor current
It is certain during average value and difference between a reference value that the determines (step when prescribed limit (such as 1.5V~3.5V) is outer
In S28, NO), it is determined as that A/D conversion circuit 504 is not operating normally.
Also, it is dynamic that A/D conversion determination unit 507 (control unit) stops the equipment equipped with control device 50 i.e. outdoor unit 1
Make (abending) (step S26).
Also, A/D converts the average value that determination unit 507 is calculated in A/D conversion circuit 504 and according to predetermined motor
Electric current it is certain during average value and difference between a reference value that determines when prescribed limit (such as 1.5V~3.5V) is interior
(in step S28, YES) is determined as normal condition and returns to the processing of step S21.
More than, to the process flow of the outdoor unit 1 according to the second embodiment of the present invention for having control device 50 into
Explanation is gone.In the processing of above-mentioned outdoor unit 1, test section 501 detects the motor current to circulate in motor 40.Voltage detecting
Detect voltage corresponding with the electric current that test section 501 detects in portion 502.A/D conversion circuit 503 will be examined with voltage detection department 502
The corresponding voltage C of the motor current for the U phase measured is converted to digital value from the analogue value.A/D conversion circuit 504 will be with voltage detecting
The corresponding voltage D of the motor current for the V phase that portion 502 detects is converted to digital value from the analogue value.A/D converts determination unit 507 and counts
Calculate the average value of digital value corresponding with the voltage C after A/D conversion circuit 503 is converted is passed through.Also, A/D converts determination unit 507
The average value that is calculated with according to predetermined motor current it is certain during average value 0 and the reference voltage that determines
Difference between (such as 2.5V) is determined as that A/D conversion circuit 503 is not normal when prescribed limit (such as 1.5V~3.5V) is outer
Movement.In addition, A/D conversion determination unit 507 calculates digital value corresponding with the voltage D after A/D conversion circuit 504 is converted is passed through
Average value.Also, A/D converts average value of the determination unit 507 in calculating and certain period according to predetermined motor current
Average value 0 and determine reference voltage (such as 2.5V) between difference when prescribed limit (such as 1.5V~3.5V) is outer,
It is determined as that A/D conversion circuit 504 is not operating normally.Also, A/D conversion determination unit 507 makes the equipment equipped with control device 50
I.e. 1 stopping of outdoor unit acts.
As a result, in the outdoor unit 1 of 30 drive motor 40 of inverter, in A/D conversion circuit 503 or A/D conversion circuit 504
In the case where the i.e. exception that is not operating normally, it is able to detect its exception, and can safely stop the outdoor for having control device 50
Machine 1.In addition, the air-conditioning system comprising outdoor unit 1 can be protected.
In addition, A/D conversion circuit according to the second embodiment of the present invention is not limited to multiple A/D conversion circuits.
As long as A/D conversion circuit can high speed motion, and the voltage C and and V for corresponding to U phase can be obtained by A/D conversion circuit
The voltage C and voltage D corresponding with V for corresponding to U phase can be handled differently respectively, then such as Figure 11 institute by corresponding voltage D
Show, it can be by an A/D conversion circuit 503 by voltage C corresponding with the motor current U detected and electricity corresponding with V
D is pressed to be converted to digital value from the analogue value.Moreover, according to the digital value that A/D conversion circuit 503 exports, A/D converts determination unit 507
It can be determined that the abnormal operation of A/D conversion circuit 503.
Also, A/D conversion circuit according to the second embodiment of the present invention, can also by voltage E corresponding with W Lai
Digital value is converted to from the analogue value instead of voltage C corresponding with above-mentioned U or voltage D corresponding with V, and by the voltage E.
In this case, the deviation of average value in a cycle of the motor current of voltage E according to acquired in A/D conversion circuit to 0
To determine the abnormal operation of A/D conversion circuit.
<third embodiment>
Then, illustrate the room in the air-conditioning system according to the third embodiment of the present invention for being used in and having control device
The structure of outer machine.
As shown in figure 12, identically as outdoor unit 1 according to first embodiment, third embodiment according to the present invention
Outdoor unit 1 have AC power source 10, AC-DC converter 20, inverter 30, motor 40 and control device 50.
But according to the control device of third embodiment 50 on the basis of control device 50 according to first embodiment
On, it is also equipped with 509, two multiplexers 510,511 of sensor and sensor voltage converter section 512.
Sensor 509 detects the current or voltage other than the motor current of the motor 40 in outdoor unit 1.Sensor 509 is examined
The motor current of motor other than the motor 40 that test case such as outdoor unit 1 has.Also, sensor 509 detects for example to outdoor
The output voltage for the inverter that motor other than the motor 40 that machine 1 has is driven.
Voltage detection department 502 or sensor 509 are connected to A/D conversion circuit 503 by multiplexer 510, and by voltage detecting
Any one in the current or voltage in outdoor unit 1 that the alternating voltage and sensor 509 that portion 502 detects detect
It is output to A/D conversion circuit 503.
Voltage detection department 502 or sensor 509 are connected to A/D conversion circuit 504 by multiplexer 511, and by voltage detecting
Any one output in the current or voltage in outdoor unit 1 that the voltage and sensor 509 that portion 502 detects detect
To A/D conversion circuit 504.
Current or voltage in outdoor unit 1 that sensor 509 detects is converted to correspondence by sensor voltage converter section 512
Voltage.Also, the voltage after conversion is output to A/D conversion circuit via multiplexer 510 by sensor voltage converter section 512
503.Also, the voltage after conversion is output to A/D conversion circuit 504 via multiplexer 511 by sensor voltage converter section 512.
Here, when predefining the average value of certain period for the voltage that two A/D conversion circuits 503,504 obtain,
A/D conversion circuit 503 or A/D conversion electricity can be detected by method identical with first embodiment or second embodiment
The exception on road 504.Also, it is dynamic that A/D conversion determination unit 507 can be such that the equipment equipped with control device 50 i.e. outdoor unit 1 stops
Make.
As a result, in the outdoor unit 1 of 30 drive motor 40 of inverter, in A/D conversion circuit 503 or A/D conversion circuit 504
When not being operating normally i.e. abnormal, it is able to detect it and is not operating normally extremely, and can safely stop having control device
50 outdoor unit 1.In addition, the air-conditioning system comprising outdoor unit 1 can be protected.
In addition, A/D conversion circuit according to the third embodiment of the present invention is not limited to multiple A/D conversion circuits.
Identically as first embodiment or second embodiment, as long as A/D conversion circuit being capable of high speed motion, it will be able to by an A/
D conversion circuit suitably obtains voltage, and can be handled differently each voltage, then as shown in figure 13, an A/D conversion circuit
Voltage can be converted to digital value from the analogue value by 503.Moreover, according to the digital value that A/D conversion circuit 503 exports, A/D conversion
Determination unit 507 can be determined that the exception of A/D conversion circuit 503.
Also, the voltage detection department 502 of embodiment according to the present invention can also be configured according to test section 501 is replaced
The current sensors such as the current transformer electric currents that detect detect motor current.
Also, the process flow of the outdoor unit 1 of embodiment according to the present invention is about corresponding to three-phase alternating current motor
Three-phase alternating voltage processing for be illustrated, but it's not limited to that.For example, the process flow of outdoor unit 1 can
Think the processing about alternating voltages more than two-phase alternating current pressure or four phases.But when outdoor unit 1 exchange about two-phase
When the processing of alternating voltage more than voltage or four phases, 120 degree of the phase difference of the phase difference of each voltage and three-phase alternating voltage is not
Together.Also, the differences such as the quantity of test section, quantity of A/D conversion circuit sometimes.
In addition, the process flow in embodiments of the present invention can also be replaced in the range of can carry out processing appropriate
Change the sequence of processing.
In addition, embodiments of the present invention are illustrated, the control device 50 that above-mentioned outdoor unit 1 has has in inside
There is computer system.Moreover, the process of above-mentioned processing is stored in computer-readable recording medium in the form of program, lead to
Computer is crossed to read and execute the program and carry out above-mentioned processing.Here, computer-readable recording medium refers to disk, light
Disk, CD-ROM, DVD-ROM, semiconductor memory etc..Also, the computer program can also be passed by communication line
It is sent to computer, executes the program to receive the computer of the transmission.
Also, above procedure can be used for realizing a part of the function.Alternatively, it is also possible to being by combination by institute
It states the program that function is all recorded in computer system and realizes, i.e., so-called differential file (difference program).
Several embodiments of the invention are described, but these embodiments be propose as an example, and
The range of invention is not limited.Also, various omissions, displacement can be carried out without departing from the scope of spirit of the present invention and is become
More.
Claims (5)
1. a kind of control device is to have control device used in the outdoor unit of motor, wherein have:
First A/D converter section, according in three voltages corresponding with the three-phase alternating current to circulate in the motor most
The analogue value of big voltage generates digital value；
2nd A/D converter section, according to the analogue value of the minimum voltage in three voltage corresponding with the three-phase alternating current
Generate digital value；And
Determination unit calculates what the digital value for generating the first A/D converter section was generated with the 2nd A/D converter section
Phase adduction takes the average value of 1/2nd times of value during the digital value is certain, calculating average value be based on it is predetermined
The electric current to circulate in the motor it is certain during average value a reference value between difference outside the specified scope the case where
Under, determine that at least one party in the first A/D converter section and the 2nd A/D converter section is not operating normally.
2. control device according to claim 1, wherein
Has control unit, which is determined as the first A/D converter section and the 2nd A/D converter section in the determination unit
In at least one party be not operating normally in the case where, control outdoor unit stopping movement.
3. control device according to claim 1 or 2, wherein have:
Detect the voltage detection department of the voltage corresponding with the three-phase alternating current.
4. a kind of control method is that having control method used by control device used in the outdoor unit of motor, wherein
First A/D converter section is according to the maximum electricity in three voltages corresponding with the three-phase alternating current to circulate in the motor
The analogue value of pressure generates digital value,
2nd A/D converter section is generated according to the analogue value of the minimum voltage in three voltage corresponding with the three-phase alternating current
Digital value,
The institute that determination unit calculates the digital value for generating the first A/D converter section and the 2nd A/D converter section generates
State digital value it is certain during phase adduction take 1/2nd times value average value, calculating average value with based on it is predetermined
The electric current to circulate in the motor it is certain during average value a reference value between difference out of the scope of the regulations,
Determine that at least one party in the first A/D converter section and the 2nd A/D converter section is not operating normally.
5. a kind of computer-readable recording medium, is stored with program, wherein
Make to function in the computer for having control device used in the outdoor unit of motor as following mechanism:
First generating mechanism, according to the maximum in three voltages corresponding with the three-phase alternating current to circulate in the motor
The analogue value of voltage generates digital value；
Second generating mechanism, it is raw according to the analogue value of the minimum voltage in three voltage corresponding with the three-phase alternating current
At digital value；And
Decision mechanism calculates what the digital value for generating first generating mechanism was generated with second generating mechanism
Phase adduction takes the average value of 1/2nd times of value during the digital value is certain, calculating average value be based on it is predetermined
The electric current to circulate in the motor it is certain during average value a reference value between difference outside the specified scope the case where
Under, determine that at least one party in first generating mechanism and second generating mechanism is not operating normally.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015052285A JP6543872B2 (en) | 2015-03-16 | 2015-03-16 | Control device, control method and program |
| JP2015-052285 | 2015-03-16 |
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| JP7341702B2 (en) * | 2019-04-01 | 2023-09-11 | Ntn株式会社 | Condition monitoring device and condition monitoring method |
| DE102019112019B4 (en) * | 2019-05-08 | 2021-01-14 | Danfoss Power Electronics A/S | Motor drive and method for monitoring operational measurement data of an electric motor with at least one operating point |
| JP7105942B1 (en) | 2021-01-27 | 2022-07-25 | 三菱電機株式会社 | Control device |
| JP7360057B2 (en) * | 2021-09-10 | 2023-10-12 | ダイキン工業株式会社 | Inverter device and its current detection method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101145042A (en) * | 2006-09-15 | 2008-03-19 | 三菱电机株式会社 | On-vehicle electronic control device |
| CN203135851U (en) * | 2013-03-14 | 2013-08-14 | 美的集团股份有限公司 | Household electrical appliance ADC detection circuit and household electrical appliance equipped with the same |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH06181434A (en) * | 1992-12-14 | 1994-06-28 | Hitachi Ltd | Fault detection system for a/d converter |
| JP3861874B2 (en) * | 2003-12-16 | 2006-12-27 | 株式会社デンソー | AD converter failure detection device |
| JP4643404B2 (en) * | 2005-09-15 | 2011-03-02 | 三菱電機株式会社 | Inverter control device |
| JP4340296B2 (en) * | 2007-01-30 | 2009-10-07 | シャープ株式会社 | A / D converter |
| JP2013234851A (en) * | 2010-09-03 | 2013-11-21 | Sanyo Electric Co Ltd | Battery system, electric vehicle, and battery control device |
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2015
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101145042A (en) * | 2006-09-15 | 2008-03-19 | 三菱电机株式会社 | On-vehicle electronic control device |
| CN203135851U (en) * | 2013-03-14 | 2013-08-14 | 美的集团股份有限公司 | Household electrical appliance ADC detection circuit and household electrical appliance equipped with the same |
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| JP6543872B2 (en) | 2019-07-17 |
| JP2016174444A (en) | 2016-09-29 |
| CN105991081A (en) | 2016-10-05 |
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