CN105929248B - The inductance repair method and device of power factor corrector on electric-controlled plate - Google Patents
The inductance repair method and device of power factor corrector on electric-controlled plate Download PDFInfo
- Publication number
- CN105929248B CN105929248B CN201610370618.6A CN201610370618A CN105929248B CN 105929248 B CN105929248 B CN 105929248B CN 201610370618 A CN201610370618 A CN 201610370618A CN 105929248 B CN105929248 B CN 105929248B
- Authority
- CN
- China
- Prior art keywords
- inductance
- electric
- power factor
- factor corrector
- controlled plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
- G01R27/26—Measuring inductance or capacitance; Measuring quality factor, e.g. by using the resonance method; Measuring loss factor; Measuring dielectric constants ; Measuring impedance or related variables
- G01R27/2611—Measuring inductance
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Rectifiers (AREA)
- Dc-Dc Converters (AREA)
Abstract
The invention discloses a kind of inductance repair method of power factor corrector on electric-controlled plate and devices, the described method comprises the following steps: when electric-controlled plate first powers on, are recognized to the inductance of power factor corrector to obtain the first inductance value；After electric-controlled plate powers on every time, the inductance of power factor corrector is recognized at least once, and is obtained before electric-controlled plate power down to the inductance last time identification result of power factor corrector using as the second inductance value；The timing node that inductance breaks down is judged according to the first inductance value of failure electric-controlled plate, the second inductance value and preset nominal inductance value.This method recognizes inductance when electric-controlled plate powers on every time to obtain the inductance value of inductance, when electric-controlled plate can not work normally, judge whether inductance is abnormal according to the inductance value of acquisition, and the timing node being abnormal, to be conducive to analysis and maintenance of the maintenance personal to electric-controlled plate.
Description
Technical field
The present invention relates to power factor corrector technical field, in particular to power factor corrector on a kind of electric-controlled plate
Inductance repair method and device.
Background technique
Most household electrical appliance use following circuit topology: direct current of the single phase alternating current power supply by uncontrollable rectification output ripple
Voltage adjusts output steady dc voltage using power factor corrector, is then connected to the electrolytic capacitor of large capacity, finally
It powers again to internal switch power supply and basic load.Wherein, power factor corrector often uses Boost type PFC (Power Factor
Correction, PFC) circuit, i.e., it is made of inductance, power switch tube and diode.
Wherein, inductance is in production and transport or during install and use, it is possible to create magnetic core fracture, fragmentation or demagnetization etc.
Phenomenon, so that the sensibility reciprocal of inductance seriously becomes smaller, to cause power factor emendation function abnormal.When there is such exception, contain
The electric-controlled plate of power factor correction device usually can not work normally, and can be returned producer and be analyzed, be in order to facilitate analysis
It is no because inductance causes electric-controlled plate can not work normally extremely, the invention proposes a kind of electricity of power factor corrector on electric-controlled plate
Feel repair method.
Summary of the invention
The present invention is directed to solve at least some of the technical problems in related technologies.For this purpose, of the invention
One purpose is to propose a kind of inductance repair method of power factor corrector on electric-controlled plate, and this method is on electric-controlled plate is each
Inductance is recognized when electric to obtain the inductance value of inductance, to judge electricity according to the inductance value of acquisition in electric-controlled plate failure
Whether sense is abnormal, and the timing node being abnormal, to be conducive to analysis and maintenance of the maintenance personal to electric-controlled plate.
It is another object of the present invention to the inductance apparatus for examination and repair for proposing power factor corrector on a kind of electric-controlled plate.
To achieve the above object, one aspect of the present invention embodiment proposes a kind of electricity of power factor corrector on electric-controlled plate
Feel repair method, comprising the following steps: when the electric-controlled plate first powers on, to the inductance of the power factor corrector into
Row identification is to obtain the first inductance value；After the electric-controlled plate powers on every time, the inductance of the power factor corrector is carried out
It recognizes at least once, and obtains the inductance last time identification result before the electric-controlled plate power down to the power factor corrector
Using as the second inductance value；Judged according to the first inductance value of failure electric-controlled plate, the second inductance value and preset nominal inductance value
The timing node that the inductance breaks down.
The inductance repair method of power factor corrector on electric-controlled plate according to an embodiment of the present invention, in electric-controlled plate first time
When powering on, the inductance of power factor corrector is recognized to obtain the first inductance value, and after electric-controlled plate powers on every time, it is right
The inductance of power factor corrector is recognized at least once, and obtains the inductance before electric-controlled plate power down to power factor corrector
Last time identification result using as the second inductance value, and according to the first inductance value of failure electric-controlled plate, the second inductance value and
Preset nominal inductance value judges the timing node that inductance breaks down.This method carries out inductance when electric-controlled plate powers on every time
It recognizes to obtain the inductance value of inductance, can judge inductance according to the inductance value of acquisition when electric-controlled plate can not work normally
Whether it is abnormal, and the time point being abnormal, to be conducive to analysis and maintenance of the maintenance personal to electric-controlled plate.
According to one embodiment of present invention, if between first inductance value and the preset nominal inductance value
Difference is greater than the first inductance threshold value, then judges that the timing node that the inductance breaks down first powers on for the electric-controlled plate
Before；If the difference between second inductance value and the preset nominal inductance value is greater than the second inductance threshold value, judge
The timing node that the inductance breaks down is in the electric-controlled plate use process.
According to one embodiment of present invention, the inductance of the power factor corrector is recognized to obtain the first electricity
Inductance value, comprising: obtain to the inductance first time identification result of the power factor corrector using as first inductance value；Or
Person obtains to the average value of n times identification result before the inductance of the power factor corrector using as first inductance value,
In, the N is the integer greater than 1.
According to one embodiment of present invention, the inductance of the power factor corrector is recognized, comprising: obtain institute
The input voltage of power factor corrector is stated, and obtains the input current of the power factor corrector, and obtains the function
The output voltage of rate factor corrector；According to the input voltage, the input current, the output voltage and the power
The working condition of the power switch tube of factor corrector recognizes the inductance.
To achieve the above object, another aspect of the present invention embodiment proposes power factor corrector on a kind of electric-controlled plate
Inductance apparatus for examination and repair, comprising: first acquisition unit, for when the electric-controlled plate first powers on, to the power factor school
The inductance of positive device is recognized to obtain the first inductance value；Second acquisition unit, it is right for after the electric-controlled plate powers on every time
The inductance of the power factor corrector is recognized at least once, and is obtained before the electric-controlled plate power down to the power factor
The inductance last time identification result of corrector is using as the second inductance value；Judging unit, for according to the of failure electric-controlled plate
One inductance value, the second inductance value and preset nominal inductance value judge the timing node that the inductance breaks down.
The inductance apparatus for examination and repair of power factor corrector on the electric-controlled plate proposed according to embodiments of the present invention, in electric-controlled plate
When once powering on, the inductance of power factor corrector is recognized to obtain the first inductance value, and powered on every time in electric-controlled plate
Afterwards, the inductance of power factor corrector is recognized at least once, and is obtained before electric-controlled plate power down to power factor corrector
Inductance last time identification result using as the second inductance value, and the first inductance value according to failure electric-controlled plate, the second electricity
Inductance value and preset nominal inductance value judge the timing node that inductance breaks down.The device is when electric-controlled plate powers on every time to electricity
Sense is recognized to obtain the inductance value of inductance, can be sentenced according to the inductance value of acquisition when electric-controlled plate can not work normally
Whether power-off sense is abnormal, and the time point being abnormal, to be conducive to analysis and dimension of the maintenance personal to electric-controlled plate
It repairs.
According to one embodiment of present invention, if between first inductance value and the preset nominal inductance value
Difference is greater than the first inductance threshold value, and the judging unit then judges the timing node that the inductance breaks down for the electric-controlled plate
Before first powering on；If the difference between second inductance value and the preset nominal inductance value is greater than the second inductance threshold
Value, the judging unit then judge the timing node that the inductance breaks down in the electric-controlled plate use process.
According to one embodiment of present invention, the first acquisition unit the inductance to the power factor corrector into
When row identification is to obtain the first inductance value, wherein the first acquisition unit obtains the inductance to the power factor corrector
First time identification result is using as first inductance value；Alternatively, the first acquisition unit is obtained to the power factor school
The average value of n times identification result is using as first inductance value before the inductance of positive device, wherein the N is the integer greater than 1.
According to one embodiment of present invention, above-mentioned inductance apparatus for examination and repair further include: voltage acquisition unit, for obtaining
The output voltage of the input voltage of the power factor corrector and the power factor corrector；Electric current acquiring unit, is used for
Obtain the input current of the power factor corrector；The first acquisition unit or the second acquisition unit are according to
The work shape of the power switch tube of input voltage, the input current, the output voltage and the power factor corrector
State recognizes the inductance.
Detailed description of the invention
Fig. 1 is the topological diagram of power factor corrector according to an embodiment of the invention；
Fig. 2 is the inductance identification schematic diagram of one embodiment according to the present invention；
Fig. 3 is the inductance identification schematic diagram of second embodiment according to the present invention；
Fig. 4 is the inductance identification schematic diagram of third embodiment according to the present invention；
Fig. 5 is the inductance identification schematic diagram of the 4th embodiment according to the present invention；
Fig. 6 is the flow chart of the inductance repair method of power factor corrector on electric-controlled plate according to an embodiment of the present invention；
Fig. 7 is the block diagram of the inductance apparatus for examination and repair of power factor corrector on electric-controlled plate according to an embodiment of the present invention；
And
Fig. 8 is the box of the inductance apparatus for examination and repair of power factor corrector on electric-controlled plate according to an embodiment of the invention
Figure.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to is used to explain the present invention, and is not considered as limiting the invention.
The inductance of power factor corrector on the electric-controlled plate proposed according to embodiments of the present invention described with reference to the accompanying drawings
Repair method and device.
In an embodiment of the present invention, as shown in Figure 1, the electric-controlled plate of the circuit of power factor correction in single phase ac input
On may include control chip, main circuit and detection circuit, main circuit include rectifier bridge, filter capacitor, power factor corrector
With big capacity electrolyte capacitor and load, power factor corrector includes inductance, power switch tube and diode, wherein power
Switching tube can for IGBT (Insulated Gate Bipolar Transistor, insulated gate bipolar transistor) and
MOSFET (Metal-Oxide-Semiconductor Field-Effect Transistor, Metal-Oxide Semiconductor field
Effect transistor), diode can be fast recovery diode.
When power switch tube is opened, input voltage VbdIt is applied on inductance and power switch tube, electric current is from rectifier bridge
Anode output, flows through inductance, power switch tube and sampling resistor, returns to the negative terminal of rectifier bridge.Inductive current linearly rises,
Variation relation meets:
Wherein, VbdFor input voltage, L is the inductance value of inductance, IindFor input current, VIGBTFor leading for power switch tube
Logical pressure drop.
When power switch tube shutdown, input voltage VbdIt is applied on inductance and diode, anode of the electric current from rectifier bridge
Output, flows through inductance, diode enters electrolytic capacitor and load, and the negative terminal of rectifier bridge is returned to using sampling resistor.It is inputting
Voltage VbdHigher than output voltage VdcWhen, inductive current continues to rise, otherwise electric current decline, curent change relationship meet:
Wherein, VFRDFor the conduction voltage drop of diode, VdcFor output voltage.
It controls chip and passes through detection input voltage Vbd(the direct current i.e. after rectifier bridge, before power factor corrector
Pressure), input current Iind(i.e. inductive current) and output voltage Vdc(i.e. the voltages or DC bus-bar voltage at electrolytic capacitor both ends)
Carry out the control and inductance identification of power factor corrector.Wherein, input current IindResistance sampling method can be used or pass through
Hall current sensor detection, input voltage VbdWith output voltage VdcThe detection of electric resistance partial pressure method can be used.
In one embodiment of the invention, the inductance of power factor corrector is recognized, comprising: obtain power because
The input voltage V of number correctorbd, and obtain the input current I of power factor correctorind, and obtain power factor corrector
Output voltage Vdc；According to input voltage Vbd, input current Iind, output voltage VdcAnd the power of power factor corrector is opened
The working condition for closing pipe recognizes inductance.
Specifically, when recognizing to inductance, control chip can inject test voltage to inductance, while pass through sampling
The methods of resistance detects input current Iind, then according to the Flux consumption and input current I of injection test voltage effectindVariation
Amount is to recognize inductance, to obtain inductance value=injection test voltage effect Flux consumption/input current I of inductanceind's
Variable quantity obtains the inductance value of inductance by following formula (3):
Wherein, t1And t2Respectively test voltage injection at the beginning of and finish time, Iind(t1) and Iind(t2) respectively
The input current and the input current of test voltage injection finish time of start time, V are injected for test voltageindFor inductance two
The voltage (also referred to as with the counter electromotive force of voltage or inductance generation on inductance) at end, in an embodiment of the present invention, can
The voltage at inductance both ends is calculated by following formula (4):
As an example, as shown in Fig. 2, control chip can inject n times pulse voltage to inductance, if kth subpulse
The duty ratio of voltage injection is Duty (k), input current IindStart from scratch and rises to Iind(k), it is defeated to be then shut off pulse voltage
Out, until input current IindThe injection of next pulse voltage is re-started after falling to zero again, so that input current IindWork
Make in on-off state.
Then, according in n times pulse voltage injection length, under power switch tube is in the conductive state, injected pulse voltage
The accumulation amount of the accumulation amount of the Flux consumption of effect and input current variable quantity calculates the inductance value of inductance, that is, infuses when to inductance
When entering n times pulse voltage, the inductance value of inductance can be obtained by following formula (5):
Wherein, Duty (k) is the duty ratio of the pulse voltage of kth time injection, TPWMFor the duty cycle of power switch tube,
Iind(k) variable quantity of input current when injecting for kth subpulse voltage, N and k are positive integer.
It should be noted that in this example, the setting of duty ratio and input voltage Vbd, output voltage Vdc, inductance electricity
Inductance value is related with the maximum current value that power switch tube allows, i.e., duty ratio meetsAnd duty ratio cannot be set
It sets too small, influences detection accuracy, extend detection time, wherein L0For the inductance value under inductance normal condition, IthFor power switch
The maximum current value that pipe allows.
As another example, as shown in figure 3, when using continuous voltage injection method, that is, power switch tube work is allowed to hold
Continuous opening state, the duty ratio for being equivalent to N number of PWM (Pulse Width Modulation, pulse width modulation) period are
100%, V at this timeind=Vbd-VIGBT, the change of the Flux consumption and input current that are then acted on according to test voltage in N number of PWM cycle
Change amount calculates the inductance value of inductance, i.e., the inductance value of inductance is obtained by following formula (6):
Wherein, TPWMFor the duty cycle of power switch tube, Iind(0) and Iind(N) be respectively test voltage injection start when
The input current of input current and test voltage the injection finish time at quarter.
As another example, as shown in figure 4, allowing power switch tube work in arteries and veins when using modulation voltage injection method
When wide modulation condition, the duty ratio for being equivalent to N number of PWM cycle is adjustable in 0-100% range, at this point, the voltage at inductance both endsThen it is acted on according to test voltage in N number of PWM cycle
Flux consumption and the variable quantity of input current calculate the inductance value of inductance, i.e., the inductance of inductance is obtained by following formula (7)
Value:
Wherein, TPWMFor the duty cycle of power switch tube, D is the conducting dutycycle of power switch tube, Iind(0) and Iind
(N) be respectively test voltage injection start time input current and test voltage injection finish time input current.
It should be noted that in this example, the setting of the conducting dutycycle of power switch tube and input voltage Vbd, output
Voltage Vdc, maximum current value that inductance value and the power switch tube of inductance allow it is related, i.e. the conducting dutycycle of power switch tube
It needs to meet
As another example, as shown in figure 5, power switch tube is allowed to work when injecting modulated test voltage to inductance
In pulsewidth modulation state, the duty ratio for being equivalent to N number of PWM cycle is adjustable in 0-100% range, at this point, the electricity at inductance both ends
PressureThen according in N number of PWM cycle, power switch
The accumulation amount of the variable quantity of the accumulation amount and input current of the Flux consumption of modulated test voltage effect when managing in the conductive state
To calculate the inductance value of inductance, the i.e. inductance value by following formula (8) acquisition inductance:
Wherein, TPWMFor the duty cycle of power switch tube, D is the conducting dutycycle of power switch tube, Iind1(k) and Iind2
(k) be respectively k-th duty cycle internal modulation test voltage injection start time input current and the injection of modulated test voltage
The input current of finish time, N and k are positive integer.
It should be noted that in this example, the setting of duty ratio and input voltage Vbd, output voltage Vdc, inductance electricity
Inductance value is related with the maximum current value that power switch tube allows, i.e., duty ratio needs to meetAnd duty ratio cannot be set
It sets too small, influences detection accuracy, extend detection time.
It should be noted that according to the input voltage V of the power factor corrector of detectionbd, input current Iind, output electricity
Press VdcAnd there are many ways to working condition of power switch tube recognizes inductance in power factor corrector, for example,
It can also be in input voltage VbdIn predeterminated voltage section, control power switch tube conducting, and be connected according to power switch tube
The input current I of periodindVariable quantity and input voltage VbdThe inductance value of inductance is calculated, specific which is not described herein again.
Fig. 6 is the process of the inductance repair method of power factor corrector on the electric-controlled plate proposed according to embodiments of the present invention
Figure.As shown in fig. 6, on the electric-controlled plate power factor corrector inductance repair method, comprising the following steps:
S1 recognizes the inductance of power factor corrector when electric-controlled plate first powers on to obtain the first inductance
Value.
According to one embodiment of present invention, the inductance of power factor corrector is recognized to obtain the first inductance
Value, comprising: obtain to the inductance first time identification result of power factor corrector using as the first inductance value；Alternatively, acquisition pair
The average value of n times identification result is using as the first inductance value before the inductance of power factor corrector, wherein N is whole greater than 1
Number.
It specifically, can be by the system initialization flag bit set of electric-controlled plate before electric-controlled plate factory.It dispatches from the factory in electric-controlled plate
When powering on afterwards and for the first time (system initialization flag bit set at this time), according to the input voltage of the power factor corrector of detection
Vbd, input current Iind, output voltage VdcAnd the working condition of power switch tube carries out inductance in power factor corrector
Identification, and first time inductance is recognized into inductance value obtained as the first inductance value and is stored in first of EEPROM on electric-controlled plate
Then memory space resets system initialization flag bit.
Alternatively, before electric-controlled plate factory, by the system initialization flag bit set of electric-controlled plate.After electric-controlled plate factory, when
When system initialization flag bit set, the average value of inductance value obtained is as the first inductance value when preceding n times inductance is recognized
It is stored in the first memory space of EEPROM on electric-controlled plate, then resets system initialization flag bit.For example, can be automatically controlled
When plate powers on for the first time, inductance is repeatedly recognized, and using the average value of the inductance value obtained when repeatedly recognizing as the first electricity
Inductance value is stored, to improve the accuracy of inductance identification result.
S2 recognizes the inductance of power factor corrector, and obtain electricity at least once after electric-controlled plate powers on every time
It controls before plate power down to the inductance last time identification result of power factor corrector using as the second inductance value.
That is, powering on Shi Douhui every time according to the input voltage V of the power factor corrector of detection in electric-controlled platebd、
Input current Iind, output voltage VdcAnd the working condition of power switch tube recognizes inductance in power factor corrector,
For example, can once be recognized when powering on every time or repeatedly be recognized, to obtain the current inductance value of inductance in real time.In electricity
Phenomena such as controlling in plate use process, if there is inductance core fracture, fragmentation or demagnetizing will lead to power factor corrector pass
It closes, the electric-controlled plate with the power factor corrector will be unable to work normally, and be obtained when will recognize at this time to inductance last time
The inductance value obtained is stored in the second memory space of EEPROM on electric-controlled plate as the second inductance value.
S3 judges that inductance is sent out according to the first inductance value of failure electric-controlled plate, the second inductance value and preset nominal inductance value
The timing node of raw failure.
According to one embodiment of present invention, if the difference between the first inductance value and preset nominal inductance value is greater than
First inductance threshold value, then before judging that timing node that inductance breaks down first powers on for electric-controlled plate；If the second inductance value
Difference between preset nominal inductance value is greater than the second inductance threshold value, then judges the timing node that inductance breaks down for electricity
It controls in plate use process.Wherein, the first inductance threshold value and the second inductance threshold value can be demarcated according to the actual situation, for example,
First inductance threshold value and the second inductance threshold value can be the 5%-50% of nominal inductance value.
Specifically, when electric-controlled plate can not work normally, producer will be returned and analyzed and repaired, pass through reading at this time
It is stored in the second electricity of the first inductance value of the first memory space of EEPROM on electric-controlled plate and the second memory space of EEPROM
Inductance value, and the first inductance value and the second inductance value are compared with nominal inductance value respectively can judge whether inductance occurs
It is abnormal, and the timing node being abnormal.
Wherein, if the difference between the first inductance value and nominal inductance value is more than the first inductance threshold value, illustrate in electricity
Inductance appearance is abnormal (i.e. before user's first time use) before control plate powers on for the first time, it may be possible to cause inductance to be broken during transportation
Or fragmentation etc.；If the difference between the first inductance value and nominal inductance value close to zero, illustrates to power on for the first time in electric-controlled plate
Before, inductance is without exception.If the difference between the second inductance value and nominal inductance value is more than the second inductance threshold value, illustrate inductance
It is to occur exception in use, it may be possible to which demagnetizing occurs in inductance；If between the second inductance value and nominal inductance value
Difference then illustrates that inductance is without exception close to zero, may be at this time due to other reasons cause electric-controlled plate can not normal use, such as
Short circuit occurs for diode or open circuit etc. occurs for power switch tube.So that maintenance personal can accurately and quickly judge electricity
Whether sense is abnormal, and the timing node being abnormal.
In conclusion on electric-controlled plate according to an embodiment of the present invention power factor corrector inductance repair method, in electricity
When control plate first powers on, the inductance of power factor corrector is recognized to obtain the first inductance value, and every in electric-controlled plate
It is secondary power on after, the inductance of power factor corrector is recognized at least once, and obtains before electric-controlled plate power down to power factor
The inductance last time identification result of corrector using as the second inductance value, and according to the first inductance value of failure electric-controlled plate,
Second inductance value and preset nominal inductance value judge the timing node that inductance breaks down.This method powers on every time in electric-controlled plate
When inductance is recognized to obtain the inductance value of inductance, can be according to the electricity of acquisition with when electric-controlled plate can not work normally
Inductance value judges whether inductance is abnormal, and the time point being abnormal, and divides to be conducive to maintenance personal electric-controlled plate
Analysis and maintenance.
Fig. 7 is the block diagram of the inductance apparatus for examination and repair of power factor corrector on electric-controlled plate according to an embodiment of the present invention.
As shown in fig. 7, the inductance apparatus for examination and repair of power factor corrector includes: that first acquisition unit 10, second obtains on the electric-controlled plate
Unit 20 and judging unit 30.
Wherein, first acquisition unit 10 is used for when electric-controlled plate first powers on, to the inductance of power factor corrector into
Row identification is to obtain the first inductance value.
According to one embodiment of present invention, first acquisition unit 10 is recognized in the inductance to power factor corrector
When obtaining the first inductance value, wherein first acquisition unit 10 is obtained to recognize the inductance of power factor corrector for the first time and be tied
Fruit is using as the first inductance value；Alternatively, first acquisition unit 10 is obtained to n times identification result before the inductance of power factor corrector
Average value using as the first inductance value, wherein N is the integer greater than 1.
It specifically, can be by the system initialization flag bit set of electric-controlled plate before electric-controlled plate factory.It dispatches from the factory in electric-controlled plate
When powering on afterwards and for the first time (system initialization flag bit set at this time), first acquisition unit 10 recognizes inductance, and by
Inductance recognizes the first memory space that inductance value obtained is stored in EEPROM on electric-controlled plate as the first inductance value, so
System initialization flag bit is reset afterwards.
Alternatively, before electric-controlled plate factory, by the system initialization flag bit set of electric-controlled plate.After electric-controlled plate factory, when
When system initialization flag bit set, the average value of the inductance value obtained when recognizing preceding n times inductance of first acquisition unit 10
It is stored in the first memory space of EEPROM on electric-controlled plate as the first inductance value, then resets system initialization flag bit.
For example, first acquisition unit 10 can repeatedly recognize inductance when electric-controlled plate powers on for the first time, and will be obtained when repeatedly recognizing
The average value of the inductance value obtained is stored as the first inductance value, to improve the accuracy of inductance identification result.
Second acquisition unit 20 is used for after electric-controlled plate powers on every time, carries out at least one to the inductance of power factor corrector
Secondary identification, and obtain before electric-controlled plate power down to the inductance last time identification result of power factor corrector using as the second inductance
Value.
That is, when electric-controlled plate powers on every time, second acquisition unit 20 can all be recognized inductance, for example, can
Once to be recognized when powering on every time or repeatedly be recognized, to obtain the current inductance value of inductance in real time.Make in electric-controlled plate
Phenomena such as in the process, if there is inductance core fracture, fragmentation or demagnetizing, it will lead to power factor corrector closing, tool
There is the electric-controlled plate of the power factor corrector to will be unable to work normally, second acquisition unit 20 will distinguish inductance last time at this time
Inductance value obtained is stored in the second memory space of EEPROM on electric-controlled plate as the second inductance value when knowledge.
Judging unit 30 is used for according to the first inductance value of failure electric-controlled plate, the second inductance value and preset nominal inductance value
Judge the timing node that inductance breaks down.
According to one embodiment of present invention, if the difference between the first inductance value and preset nominal inductance value is greater than
First inductance threshold value, before judging unit 30 then judges that the timing node that inductance breaks down first powers on for electric-controlled plate；If
Difference between second inductance value and preset nominal inductance value is greater than the second inductance threshold value, and judging unit 30 then judges that inductance is sent out
The timing node of raw failure is in electric-controlled plate use process.Wherein, the first inductance threshold value and the second inductance threshold value can be nominal
The 5%-50% of inductance value.
Specifically, when electric-controlled plate can not work normally, producer will be returned and analyzed and repaired, at this time judging unit
30 are stored in the first inductance value of the first memory space of EEPROM on electric-controlled plate and the second storage sky of EEPROM by reading
Between the second inductance value, and the first inductance value and the second inductance value are compared with nominal inductance value respectively can judge electricity
Whether sense is abnormal, and the timing node being abnormal.
Wherein, if the difference between the first inductance value and nominal inductance value is more than the first inductance threshold value, illustrate in electricity
Inductance appearance is abnormal (i.e. before user's first time use) before control plate powers on for the first time, it may be possible to cause inductance to be broken during transportation
Or fragmentation etc.；If the difference between the first inductance value and nominal inductance value close to zero, illustrates to power on for the first time in electric-controlled plate
Before, inductance is without exception.If the difference between the second inductance value and nominal inductance value is more than the second inductance threshold value, illustrate inductance
It is to occur exception in use, it may be possible to which demagnetizing occurs in inductance；If between the second inductance value and nominal inductance value
Difference then illustrates that inductance is without exception close to zero, may be at this time due to other reasons cause electric-controlled plate can not normal use, such as
Short circuit occurs for diode or open circuit etc. occurs for power switch tube.So that maintenance personal can accurately and quickly judge electricity
Whether sense is abnormal, and the timing node being abnormal.
According to one embodiment of present invention, as shown in figure 8, the inductance of power factor corrector is examined on above-mentioned electric-controlled plate
Repair device further include: voltage acquisition unit 40 and electric current acquiring unit 50, wherein voltage acquisition unit 40 for obtain power because
The input voltage of number corrector and the output voltage of power factor corrector, electric current acquiring unit 50 is for obtaining power factor school
The input current of positive device, first acquisition unit 10 or second acquisition unit 20 are according to input voltage, input current, output voltage
And the working condition of the power switch tube of power factor corrector recognizes inductance.Specifically how inductance is recognized
Already described above to obtain inductance value, which is not described herein again.
The inductance apparatus for examination and repair of power factor corrector on the electric-controlled plate proposed according to embodiments of the present invention, in electric-controlled plate
When once powering on, the inductance of power factor corrector is recognized to obtain the first inductance value, and powered on every time in electric-controlled plate
Afterwards, the inductance of power factor corrector is recognized at least once, and is obtained before electric-controlled plate power down to power factor corrector
Inductance last time identification result using as the second inductance value, and the first inductance value according to failure electric-controlled plate, the second electricity
Inductance value and preset nominal inductance value judge the timing node that inductance breaks down.The device is when electric-controlled plate powers on every time to electricity
Sense is recognized to obtain the inductance value of inductance, can be sentenced according to the inductance value of acquisition when electric-controlled plate can not work normally
Whether power-off sense is abnormal, and the time point being abnormal, to be conducive to analysis and dimension of the maintenance personal to electric-controlled plate
It repairs.
In the description of the present invention, it is to be understood that, term " first ", " second " are used for description purposes only, and cannot
It is interpreted as indication or suggestion relative importance or implicitly indicates the quantity of indicated technical characteristic.Define as a result, " the
One ", the feature of " second " can explicitly or implicitly include at least one of the features.In the description of the present invention, " multiple "
It is meant that at least two, such as two, three etc., unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be mechanical connect
It connects, is also possible to be electrically connected；It can be directly connected, can also can be in two elements indirectly connected through an intermediary
The interaction relationship of the connection in portion or two elements, unless otherwise restricted clearly.For those of ordinary skill in the art
For, the specific meanings of the above terms in the present invention can be understood according to specific conditions.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in office
It can be combined in any suitable manner in one or more embodiment or examples.In addition, without conflicting with each other, the skill of this field
Art personnel can tie the feature of different embodiments or examples described in this specification and different embodiments or examples
It closes and combines.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, modifies, replacement and variant.
Claims (8)
1. the inductance repair method of power factor corrector on a kind of electric-controlled plate, which comprises the following steps:
When the electric-controlled plate first powers on, the inductance of the power factor corrector is recognized to obtain the first inductance
Value；
After the electric-controlled plate powers on every time, the inductance of the power factor corrector is recognized at least once, and obtains
To the inductance last time identification result of the power factor corrector using as the second inductance value before the electric-controlled plate power down；
Judge that event occurs for the inductance according to the first inductance value of failure electric-controlled plate, the second inductance value and preset nominal inductance value
The timing node of barrier.
2. the inductance repair method of power factor corrector on electric-controlled plate according to claim 1, which is characterized in that
If the difference between first inductance value and the preset nominal inductance value is greater than the first inductance threshold value, judge
The timing node that the inductance breaks down is before the electric-controlled plate first powers on；
If the difference between second inductance value and the preset nominal inductance value is greater than the second inductance threshold value, judge
The timing node that the inductance breaks down is in the electric-controlled plate use process.
3. the inductance repair method of power factor corrector on electric-controlled plate according to claim 1 or 2, which is characterized in that
The inductance of the power factor corrector is recognized to obtain the first inductance value, comprising:
It obtains to the inductance first time identification result of the power factor corrector using as first inductance value；Alternatively,
It obtains to the average value of n times identification result before the inductance of the power factor corrector using as first inductance value,
Wherein, the N is the integer greater than 1.
4. the inductance repair method of power factor corrector on electric-controlled plate according to claim 1, which is characterized in that institute
The inductance for stating power factor corrector is recognized, comprising:
The input voltage of the power factor corrector is obtained, and obtains the input current of the power factor corrector, and
Obtain the output voltage of the power factor corrector；
It is opened according to the power of the input voltage, the input current, the output voltage and the power factor corrector
The working condition for closing pipe recognizes the inductance.
5. the inductance apparatus for examination and repair of power factor corrector on a kind of electric-controlled plate characterized by comprising
First acquisition unit, for being carried out to the inductance of the power factor corrector when the electric-controlled plate first powers on
Identification is to obtain the first inductance value；
Second acquisition unit, for after the electric-controlled plate powers on every time, to the inductance of the power factor corrector carry out to
Few primary identification, and obtain before the electric-controlled plate power down to the inductance last time identification result of the power factor corrector with
As the second inductance value；
Judging unit, for being judged according to the first inductance value of failure electric-controlled plate, the second inductance value and preset nominal inductance value
The timing node that the inductance breaks down.
6. the inductance apparatus for examination and repair of power factor corrector on electric-controlled plate according to claim 5, which is characterized in that
If the difference between first inductance value and the preset nominal inductance value is greater than the first inductance threshold value, described to sentence
Before disconnected unit then judges that the timing node that the inductance breaks down first powers on for the electric-controlled plate；
If the difference between second inductance value and the preset nominal inductance value is greater than the second inductance threshold value, described to sentence
Disconnected unit then judges the timing node that the inductance breaks down in the electric-controlled plate use process.
7. the inductance apparatus for examination and repair of power factor corrector on electric-controlled plate according to claim 5 or 6, which is characterized in that
The first acquisition unit is when the inductance to the power factor corrector is recognized to obtain the first inductance value, wherein
The first acquisition unit is obtained to the inductance first time identification result of the power factor corrector using as described the
One inductance value；Alternatively,
The first acquisition unit obtain to the average value of n times identification result before the inductance of the power factor corrector using as
First inductance value, wherein the N is the integer greater than 1.
8. the inductance apparatus for examination and repair of power factor corrector on electric-controlled plate according to claim 5, which is characterized in that also wrap
It includes:
Voltage acquisition unit, for obtain the power factor corrector input voltage and the power factor corrector it is defeated
Voltage out；
Electric current acquiring unit, for obtaining the input current of the power factor corrector；
The first acquisition unit or the second acquisition unit are according to the input voltage, input current, described defeated
The working condition of the power switch tube of voltage and the power factor corrector recognizes the inductance out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610370618.6A CN105929248B (en) | 2016-05-27 | 2016-05-27 | The inductance repair method and device of power factor corrector on electric-controlled plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610370618.6A CN105929248B (en) | 2016-05-27 | 2016-05-27 | The inductance repair method and device of power factor corrector on electric-controlled plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105929248A CN105929248A (en) | 2016-09-07 |
| CN105929248B true CN105929248B (en) | 2019-01-29 |
Family
ID=56841405
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610370618.6A Active CN105929248B (en) | 2016-05-27 | 2016-05-27 | The inductance repair method and device of power factor corrector on electric-controlled plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105929248B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6847195B2 (en) * | 2002-08-07 | 2005-01-25 | Skynet Electronic Co., Ltd. | Auxiliary circuit for power factor corrector having self-power supplying and zero current detection mechanisms |
| CN103178705A (en) * | 2011-12-26 | 2013-06-26 | 比亚迪股份有限公司 | Method and device for controlling power-factor correction circuit |
| WO2013167016A2 (en) * | 2012-11-13 | 2013-11-14 | 中兴通讯股份有限公司 | Apparatus and method for sampling inductor current of bridgeless pfc circuit |
| CN103605015A (en) * | 2013-10-24 | 2014-02-26 | 西安欣东源电气有限公司 | Device and method for high-precision electric parameter measurement dry-type reactor online monitoring |
| CN103954844A (en) * | 2014-04-11 | 2014-07-30 | 西南交通大学 | Online detection method of inductance parameters of suspension electromagnet of middle and low speed magnetic-levitation train |
| CN104330689A (en) * | 2014-10-16 | 2015-02-04 | 国家电网公司 | Winding state evaluation method in the condition of transformer external fault |
| CN105242118A (en) * | 2015-10-26 | 2016-01-13 | 广东美的制冷设备有限公司 | Inductance detection method for power factor correction PFC circuit and device |
| CN105403773A (en) * | 2015-10-22 | 2016-03-16 | 上海发电设备成套设计研究院 | Method for real-time online monitoring on inductance value of control rod driving mechanism solenoid |
| CN105429451A (en) * | 2015-12-08 | 2016-03-23 | 广东美的制冷设备有限公司 | PFC inductor saturation suppression circuit and method and power equipment |
-
2016
- 2016-05-27 CN CN201610370618.6A patent/CN105929248B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6847195B2 (en) * | 2002-08-07 | 2005-01-25 | Skynet Electronic Co., Ltd. | Auxiliary circuit for power factor corrector having self-power supplying and zero current detection mechanisms |
| CN103178705A (en) * | 2011-12-26 | 2013-06-26 | 比亚迪股份有限公司 | Method and device for controlling power-factor correction circuit |
| WO2013167016A2 (en) * | 2012-11-13 | 2013-11-14 | 中兴通讯股份有限公司 | Apparatus and method for sampling inductor current of bridgeless pfc circuit |
| CN103605015A (en) * | 2013-10-24 | 2014-02-26 | 西安欣东源电气有限公司 | Device and method for high-precision electric parameter measurement dry-type reactor online monitoring |
| CN103954844A (en) * | 2014-04-11 | 2014-07-30 | 西南交通大学 | Online detection method of inductance parameters of suspension electromagnet of middle and low speed magnetic-levitation train |
| CN104330689A (en) * | 2014-10-16 | 2015-02-04 | 国家电网公司 | Winding state evaluation method in the condition of transformer external fault |
| CN105403773A (en) * | 2015-10-22 | 2016-03-16 | 上海发电设备成套设计研究院 | Method for real-time online monitoring on inductance value of control rod driving mechanism solenoid |
| CN105242118A (en) * | 2015-10-26 | 2016-01-13 | 广东美的制冷设备有限公司 | Inductance detection method for power factor correction PFC circuit and device |
| CN105429451A (en) * | 2015-12-08 | 2016-03-23 | 广东美的制冷设备有限公司 | PFC inductor saturation suppression circuit and method and power equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105929248A (en) | 2016-09-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10256742B2 (en) | Self-driven AC-DC synchronous rectifier for power applications | |
| US7102899B2 (en) | Control circuit for switched mode power supply unit | |
| CN104883063B (en) | Switching power unit | |
| CN103944392B (en) | For the secondary controller used in synchronous flyback converter | |
| CN105911416B (en) | The method for diagnosing faults and device of PFC pfc circuit | |
| CN103605090B (en) | Demagnetization detection method, demagnetization detection circuit and constant current driver using circuit | |
| US10236816B2 (en) | Motor inverter | |
| CN105915080A (en) | Control module with an estimator of an input electric quantity for a switching converter and method for controlling a switching converter | |
| CN105244848A (en) | Overvoltage protection method and circuit | |
| CN110011530A (en) | Circuit of power factor correction and air conditioner | |
| CN108072784A (en) | A kind of distribution line residual voltage detection circuit based on single pulse Detection ＆ Controling | |
| CN108427050A (en) | Method for diagnosing faults, the device of power factor corrector for air conditioner | |
| CN110011531A (en) | Circuit of power factor correction and air conditioner | |
| CN108649785A (en) | Two level converter the dead time method of SiC MOSFET three-phases | |
| US10067175B2 (en) | Determining bond wire failures | |
| CN102474184B (en) | For controlling the Method and circuits of the boost converter in circuit of power factor correction | |
| CN105811791B (en) | PFC pfc circuit and its inductance discrimination method and device | |
| CN105322773B (en) | Soft-start circuit and its operating method | |
| CN108462382A (en) | PFC circuit, PFC circuit control method and air conditioner | |
| CN105929248B (en) | The inductance repair method and device of power factor corrector on electric-controlled plate | |
| CN107070190A (en) | A kind of supply unit and its electric capacity method for heating and controlling | |
| CN209389697U (en) | A kind of pair side control circuit and its isolated power converting circuit | |
| CN105790616B (en) | PFC pfc circuit and its inductance discrimination method and device | |
| CN208369467U (en) | totem PFC circuit and air conditioner | |
| CN102474173B (en) | Method and circuit for correcting power factor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |