CN109245657A - Driven compressor system starts control method, device, equipment and refrigerator - Google Patents
Driven compressor system starts control method, device, equipment and refrigerator Download PDFInfo
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- CN109245657A CN109245657A CN201811352928.0A CN201811352928A CN109245657A CN 109245657 A CN109245657 A CN 109245657A CN 201811352928 A CN201811352928 A CN 201811352928A CN 109245657 A CN109245657 A CN 109245657A
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- 238000000034 method Methods 0.000 title claims abstract description 46
- 238000010586 diagram Methods 0.000 claims abstract description 58
- 239000003921 oil Substances 0.000 claims abstract description 48
- 238000001514 detection method Methods 0.000 claims description 50
- 238000004590 computer program Methods 0.000 claims description 13
- 230000005611 electricity Effects 0.000 claims description 6
- 230000006835 compression Effects 0.000 claims description 2
- 238000007906 compression Methods 0.000 claims description 2
- 238000001228 spectrum Methods 0.000 abstract description 7
- 230000037452 priming Effects 0.000 abstract description 6
- 239000003990 capacitor Substances 0.000 description 11
- 230000008569 process Effects 0.000 description 10
- 238000011897 real-time detection Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000004744 fabric Substances 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Classifications
-
- 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
- H02P23/00—Arrangements or methods for the control of AC motors characterised by a control method other than vector control
- H02P23/28—Controlling the motor by varying the switching frequency of switches connected to a DC supply and the motor phases
-
- 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
- H02P23/00—Arrangements or methods for the control of AC motors characterised by a control method other than vector control
- H02P23/04—Arrangements or methods for the control of AC motors characterised by a control method other than vector control specially adapted for damping motor oscillations, e.g. for reducing hunting
-
- 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
- H02P27/08—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 with pulse width modulation
- H02P27/085—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 with pulse width modulation wherein the PWM mode is adapted on the running conditions of the motor, e.g. the switching frequency
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Positive-Displacement Pumps (AREA)
- Control Of Ac Motors In General (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
This application involves a kind of driven compressor system starting control method, device, equipment and refrigerators, obtain random carrier frequency and initial alignment electric current；It according to random carrier frequency and initial alignment current control driven compressor system positioning trip, controls location current and increases, and detect and obtain updated location current；When detecting that updated location current reaches preset threshold in default positioning duration, bus voltage value is obtained；According to successively switched on inscription of loop and the closed loop fixed frequency operation that oils of bus voltage value and preset DC bus-bar voltage waveform diagram control driven compressor system.Random carrier frequency can reduce the harmonic energy amplitude near carrier frequency and its integral multiple, uniformly divide the harmonic wave distribution on entire frequency spectrum, above-mentioned starting control method can enable to be switched to controller when oiling the operation of speed closed loop fixed frequency and export enough voltage, drive system obtains maximum electric motor starting torque, priming speed is fast, starting capability is strong, and it is small to start vibrating noise.
Description
Technical field
This application involves drive systems to start control technology field, starts more particularly to a kind of driven compressor system and controls
Method, apparatus, equipment and refrigerator processed.
Background technique
In recent years, because electroless capacitor technology reliability, in terms of superiority, bus no electrolytic capacitor permanent magnetism
Synchronous compressor drive system has become the research hotspot of domestic and international expert.
Traditional driven compressor system for bus no electrolytic capacitor inverter often considers how driving pressure
Contracting machine operates in steady state condition, and noise vibration when not considering but and solving how to reduce driving compressor start operation is asked
Topic.The driven compressor system of traditional bus no electrolytic capacitor inverter, the noise vibration in starting operation stage are big.
Summary of the invention
Based on this, it is necessary to for traditional driven compressor system technology big in the noise vibration in starting operation stage
Problem provides a kind of driven compressor system starting control of noise vibration in initial operation phase that can effectively reduce compressor
Method, apparatus, equipment and refrigerator.
A kind of driven compressor system starting control method, which comprises
Obtain random carrier frequency and initial alignment electric current；
According to the random carrier frequency and initial alignment current control driven compressor system positioning trip, control output
Location current to the driven compressor system increases, and detects and obtain updated location current；
When detecting that the updated location current reaches preset threshold in default positioning duration, detection obtains described
The bus voltage value of the DC bus side of driven compressor system；
According to the bus voltage value and preset DC bus-bar voltage waveform diagram control the driven compressor system according to
Secondary switched on inscription of loop and the closed loop fixed frequency operation that oils.
It is described according to the bus voltage value and preset DC bus-bar voltage waveform diagram control in one of the embodiments,
Make the driven compressor system successively switched on inscription of loop and oil closed loop fixed frequency operation the step of, comprising:
It is electric when detecting that the bus voltage value reaches the first default bus according to preset DC bus-bar voltage waveform diagram
When pressing threshold value, the switched on inscription of loop of driven compressor system is controlled, is detecting that open loop revolving speed reaches preset rotation speed value
Afterwards, detection obtains updated bus voltage value again；
When detecting that the updated bus voltage value reaches according to the preset DC bus-bar voltage waveform diagram
When two default busbar voltage threshold values, controls the driven compressor system and switch to the closed loop fixed frequency operation that oils.
It is described according to the bus voltage value and preset DC bus-bar voltage waveform diagram control in one of the embodiments,
Make the driven compressor system successively switched on inscription of loop and oil closed loop fixed frequency operation the step of, further includes:
It is default when detecting that the bus voltage value is not up to first according to the preset DC bus-bar voltage waveform diagram
When busbar voltage threshold value, returns to described detect and obtain the step of the bus voltage value of DC bus side of the driven compressor system
Suddenly.
It is described according to the bus voltage value and preset DC bus-bar voltage waveform diagram control in one of the embodiments,
Make the driven compressor system successively switched on inscription of loop and oil closed loop fixed frequency operation the step of, further includes:
When detecting that the updated bus voltage value is not up to according to the preset DC bus-bar voltage waveform diagram
When the second default busbar voltage threshold value, described the step of detection obtains updated bus voltage value again is returned.
It is described in one of the embodiments, to be driven according to the random carrier frequency and initial alignment current control compressor
Dynamic system positioning trip, the location current increase of control output to the driven compressor system, and detection obtain updated
After the step of location current, further includes:
When detecting that the updated location current is not up to preset threshold in default positioning duration, the control is returned
The location current of system output to the driven compressor system increases, and detects the step of obtaining updated location current.
In one of the embodiments, after described the step of obtaining random carrier frequency and initial alignment electric current, also wrap
It includes:
Detect noise vibration；
When the noise vibration is within the scope of default noise vibration, the carrier frequency in next control period is set to fix
Value；
When the noise vibration is not within the scope of default noise vibration, set next carrier frequency for controlling the period as with
Machine number.
A kind of driven compressor system starting control device, described device include:
Parameter acquisition module, for obtaining random carrier frequency and initial alignment electric current；
Location current control module, for according to the random carrier frequency and initial alignment current control driven compressor
It is updated fixed that system positioning trip, the location current increase of control output to the driven compressor system, and detection obtain
Position electric current；
Bus voltage value detection module, for detecting that the updated location current reaches in default positioning duration
When preset threshold, detection obtains the bus voltage value of the DC bus side of the driven compressor system；
Switching control module is run, for controlling according to the bus voltage value and preset DC bus-bar voltage waveform diagram
The driven compressor system successively switched on inscription of loop and the closed loop fixed frequency operation that oils.
A kind of computer readable storage medium is stored thereon with computer program, when computer program is executed by processor
It performs the steps of
Obtain random carrier frequency and initial alignment electric current；
According to the random carrier frequency and initial alignment current control driven compressor system positioning trip, control output
Location current to the driven compressor system increases, and detects and obtain updated location current；
When detecting that the updated location current reaches preset threshold in default positioning duration, detection obtains described
The bus voltage value of the DC bus side of driven compressor system；
According to the bus voltage value and preset DC bus-bar voltage waveform diagram control the driven compressor system according to
Secondary switched on inscription of loop and the closed loop fixed frequency operation that oils.
A kind of driven compressor system starting control equipment, including controller and the current detecting for being all connected with the controller
Device, busbar voltage detection device, random generator and driven compressor system,
The random generator exports random carrier frequency to the controller；
The current detection means is for detecting location current and being sent to the controller；
The busbar voltage detection device is for detecting bus voltage value and being sent to the controller；
The controller is used to control driven compressor system successively switched on inscription of loop according to method described above
With the closed loop fixed frequency operation that oils.
A kind of refrigerator, including driven compressor system starting control equipment as described above.
Above-mentioned compressor drive system starts control method, device, equipment and refrigerator, obtains random carrier frequency and initial
Location current；According to random carrier frequency and initial alignment current control driven compressor system positioning trip, control output is extremely
The location current of driven compressor system increases, and detects and obtain updated location current；Detecting default positioning duration
When interior updated location current reaches preset threshold, the bus voltage value of the DC bus side of driven compressor system is obtained；
Driven compressor system successively switched on inscription of loop is controlled according to bus voltage value and preset DC bus-bar voltage waveform diagram
With the closed loop fixed frequency operation that oils.Frequency used by the entire start-up course of driven compressor system is random carrier frequency,
Random carrier frequency can reduce the harmonic energy amplitude near carrier frequency and its integral multiple, uniformly divide humorous on entire frequency spectrum
Wavelength-division cloth, location current when by control positioning trip increase bus when reaching preset threshold, obtained according to detection
Voltage value and preset DC bus-bar voltage waveform diagram, which successively control, enters open loop operation and the speed closed loop fixed frequency fortune that oils
Row can enable to be switched to controller when oiling the operation of speed closed loop fixed frequency and export enough voltage, and drive system obtains most
Big electric motor starting torque, priming speed is fast, starting capability is strong, and entire starting process is very steady, and it is small to start vibrating noise.
Detailed description of the invention
Fig. 1 is that driven compressor system starts control method application environment schematic diagram in one embodiment；
Fig. 2 is that driven compressor system starts control method flow chart in one embodiment；
Fig. 3 is that driven compressor system starts control method flow chart in another embodiment；
Fig. 4 is that driven compressor system starts control method flow chart in another embodiment；
Fig. 5 is that driven compressor system starts control method flow chart in another embodiment；
Fig. 6 is that driven compressor system starts control method flow diagram in one embodiment；
Fig. 7 is positioning trip stage U phase current waveform and DC bus-bar voltage waveform diagram in one embodiment；
Fig. 8 is the expansion waveform diagram of Fig. 7；
Fig. 9 is the expansion waveform diagram of Fig. 8；
Figure 10 is that DC bus-bar voltage waveform is unfolded in one embodiment, reads the numerical values recited schematic diagram of carrier frequency；
Figure 11 is open loop phase and to oil the closed loop fixed frequency operation phase in one embodiment, U phase current waveform and straight
Flow busbar voltage waveform；
Figure 12 is that phase current waveform is unfolded in one embodiment, reads the numerical values recited schematic diagram of carrier frequency；
Figure 13 is that driven compressor system starts control device structural block diagram in one embodiment.
Specific embodiment
It is with reference to the accompanying drawings and embodiments, right in order to which the objects, technical solutions and advantages of the application are more clearly understood
The application is further elaborated.It should be appreciated that specific embodiment described herein is only used to explain the application, not
For limiting the application.
Driven compressor system provided by the present application starts control method, can be applied to application environment as shown in Figure 1
In, bus no electrolytic capacitor driven compressor system is made of single-phase uncontrollable rectifier, thin-film capacitor and three-phase inverter, CdcTo hold
Value only has the thin-film capacitor of tens microfarads, and instead of electrolytic capacitor as dc-link capacitance, compressor speed regulation not only may be implemented
The problems such as with realizing natural power factor emendation function, and can effectively solve loss, efficiency, service life and reliability.
In one embodiment, as shown in Fig. 2, a kind of driven compressor system starting control method is provided, with the party
Method is applied to be illustrated for controller, comprising the following steps:
Step S110: random carrier frequency and initial alignment electric current are obtained.
Specifically, the starting operation stage of driven compressor system be divided into the positioning trip stage, the open loop operation stage and on
The oily speed closed loop fixed frequency operation phase.In the entire compressor start operation phase, a target PWM switching frequency is set
Fpwm1, wherein fpwm1 is random number, and range is not precluded within except this range generally between 2K to 10K.
Step S120: according to random carrier frequency and initial alignment current control driven compressor system positioning trip, control
The location current of system output to driven compressor system increases, and detects and obtain updated location current.
Specifically, PWM switching frequency used by the driven compressor system entire starting operation stage is fpwm1, works as drive
Dynamic compressor is in the positioning trip stage, and control location current is risen from initial alignment electric current by slope given way, electric current inspection
It surveys device real-time detection to export to the location current of driven compressor system, detection obtains updated location current, in this reality
Apply in example, increased using slope given way control location current, it will be understood that can be using other forms control positioning electricity
Stream rises to setting value.When compressor is in positioning stage, using the control of random carrier frequency, when driven compressor can be made to start
Noise vibration it is smaller, it is more mute.
Step S130: it when detecting that updated location current reaches preset threshold in default positioning duration, detects
To the bus voltage value of the DC bus side of driven compressor system.
Specifically, positioning duration is generally arranged according to load requirement, positioning duration referred to used in the entire positioning trip stage
Time, be generally arranged within 4s, positioning duration is once it is determined that as fixed value of getting off, and only system situation and operating condition be not
Together, positioning duration generally correspondence is configured.Position fixing process is that rotor-position is dragged to designated position, allow rotor from
Designated position starts to start, and the effect of setting positioning duration seeks to guarantee to carve at the start, and actual rotor position is set with system
The rotor-position set is to be overlapped, it will be understood that as long as rotor can be dragged to designated position, the given way of location current value
It can be set according to actual needs with the size of positioning duration.In the present embodiment, preset positioning duration be set as t1 <
0.5s illustrates that location current rises to preset threshold by default slope, it is necessary to complete within 0.5 second, work as location current
It rises to after preset threshold, obtains busbar voltage size at this time, wherein busbar voltage is fluctuated with 2 times of power frequency periods.
Step S140: according to bus voltage value and preset DC bus-bar voltage waveform diagram control driven compressor system according to
Secondary switched on inscription of loop and the closed loop fixed frequency operation that oils.
Specifically, determine that positioning trip is switched to open loop according to bus voltage value and preset DC bus-bar voltage waveform diagram
At the time of operation and open loop operation switches at the time of oiling the operation of speed closed loop fixed frequency.
Above-mentioned compressor drive system starting control method, device, equipment and refrigerator, driven compressor system entirely start
Frequency used by process is random carrier frequency, and random carrier frequency can reduce the harmonic wave near carrier frequency and its integral multiple
Energy magnitude uniformly divides the harmonic wave distribution on entire frequency spectrum, and location current when by control positioning trip increases until reaching
When to preset threshold, the bus voltage value and preset DC bus-bar voltage waveform diagram obtained according to detection successively control entrance and opens
Inscription of loop and the speed closed loop fixed frequency operation that oils, can enable to be switched to controller when oiling the operation of speed closed loop fixed frequency
Enough voltage is exported, drive system obtains maximum electric motor starting torque, and priming speed is fast, starting capability is strong, entire to start
Process is very steady, and it is small to start vibrating noise.
In one embodiment, as shown in figure 3, step S140 includes step S141 and step S142.
Step S141: default female when detecting that bus voltage value reaches first according to preset DC bus-bar voltage waveform diagram
When line voltage threshold value, the switched on inscription of loop of driven compressor system is controlled, the detection of control bus voltage check device is female again
Line voltage value detects to obtain updated bus voltage value.
Specifically, after location current rises to setting value, real-time detection busbar voltage size, because DC bus is electric
Pressure and U phase current are fluctuated with 2 times of power frequency periods, vibration frequency 100Hz, and time period of waves is 1/100=0.01 seconds, because
This, will soon judge whether busbar voltage reaches the first default busbar voltage threshold value, when according to preset DC bus-bar voltage
Waveform diagram, which detects, bus voltage value to be in the setting value of a nearest period of waves for DC bus-bar voltage waveform (i.e. first is pre-
If busbar voltage threshold value) at when, determine at this time for positioning trip be switched on inscription of loop at the time of, control driven compressor system
After switched on inscription of loop, open loop revolving speed is detected, after open loop revolving speed rises to preset rotation speed value, detection detection is updated
Bus voltage value afterwards.Further, bus voltage value does not need accurately to reach the first default busbar voltage threshold value, has allowed
A little error, can be at the first default busbar voltage Near Threshold, it can at slightly less than peak value.
Step S142: when detecting that updated bus voltage value reaches according to preset DC bus-bar voltage waveform diagram
When two default busbar voltage threshold values, control driven compressor system switches to the closed loop fixed frequency operation that oils.
Specifically, if detecting at this time, updated bus voltage value is in a nearest wave for DC bus-bar voltage waveform
When at the setting value (the i.e. second default busbar voltage threshold value) in dynamic period, determine that being switched to the revolving speed that oils at this time for open loop operation closes
At the time of ring fixed frequency is run, so that guaranteeing to be switched to controller when oiling the operation of speed closed loop fixed frequency can export enough
Voltage, obtain maximum electric motor starting torque, drive system priming speed is fast, and starting capability is strong, and success rate is high.Into one
Step ground, updated bus voltage value do not need accurately to reach the second default busbar voltage threshold value, have allowed a little error, i.e.,
It can be at the second default busbar voltage Near Threshold, it can at slightly less than peak value.
Further, when in the open loop operation stage and oiling the speed closed loop fixed frequency operation phase, when open loop operation
Between and oil speed closed loop fixed frequency runing time can be inconsistent, as long as in fact, each time is able to satisfy starting operation wants
It asks, can set according to actual needs.
In one embodiment, as shown in figure 4, step S140 further includes step S143, step S143: when according to preset
When DC bus-bar voltage waveform diagram detects that bus voltage value is not up to the first default busbar voltage threshold value, return obtains compressor
The step of bus voltage value of the DC bus side of drive system.
Specifically, when according to preset DC bus-bar voltage waveform diagram detect bus voltage value also be not up to DC bus
At the setting value of a nearest period of waves for voltage waveform, i.e. when the not up to first default busbar voltage threshold value, continue to position
Operation is not switched on inscription of loop.
In one embodiment, as shown in figure 4, step S140 further includes step S144, step S144: when according to preset
When DC bus-bar voltage waveform diagram detects that updated bus voltage value is not up to the second default busbar voltage threshold value, return again
The step of secondary detection obtains updated bus voltage value.
Specifically, when detecting that updated bus voltage value is also not up to according to preset DC bus-bar voltage waveform diagram
At the setting value of a nearest period of waves for DC bus-bar voltage waveform, i.e. when the not up to second default busbar voltage threshold value,
Continue open loop operation and is not switched to the speed closed loop fixed frequency operation that oils.
In one embodiment, as shown in figure 5, further including step S150, step S150 after step S120: detecting
When updated location current is not up to preset threshold in default positioning duration, control output is returned to driven compressor system
Location current increases, and detects the step of obtaining updated location current.
Specifically, when detecting that location current does not rise to preset threshold, then continue to increase according to slope given way
Constant current is added to, and real-time detection detects to obtain updated location current.
It in one embodiment, further include step 160 and step 170 after step S110.
Step 160: detection noise vibration.
Specifically, in driven compressor system operation, detection system noise vibration.
Step 170: when noise vibration is within the scope of default noise vibration, set next carrier frequency for controlling the period as
Fixed value；When noise vibration is not within the scope of default noise vibration, the carrier frequency in next control period is set as random number.
Specifically, a control period refers to the starting operation stage of driven compressor system, that is, includes positioning trip rank
Section and oils the speed closed loop fixed frequency operation phase at the open loop operation stage.It is required in the entire compressor start operation phase
PWM switching frequency is random number, just for the stage after the starting operation stage, that is, the speed closed loop fixed frequency that oils fortune
In stage after row order section, if the noise vibration of system matches is met the requirements, i.e., the noise vibration of system matches is made an uproar default
PWM switching frequency can be set as fixed value in sound oscillating region；If being unsatisfactory for noise vibration requirement, PWM switching frequency is set
It is set to random number, randomizer can issue a random number, this random number is in a presetting numerical intervals
, as next.
In a specific embodiment, as shown in fig. 6, when driving compressor is in the positioning trip stage, such as Fig. 7 institute
Show, curve 1 is U phase current waveform in figure, and curve 2 is DC bus-bar voltage waveform.Location current is risen by slope given way
To setting value, motor positions duration and t1 < 0.5s is arranged.Fig. 8 is the expansion waveform of Fig. 7, it can be seen that DC bus-bar voltage and U phase
Electric current is fluctuated with 2 times of power frequency periods.Fig. 9 and Figure 10 is the expansion waveform of Fig. 8, by taking Figure 10 as an example, reads 2 directly with oscillograph
Busbar voltage staircase periodic is flowed, that is, can be read to obtain carrier frequency sizes.Carrier frequency in the application is random number, so carrying
Wave frequency rate size is also random number, and range is between 2K to 10K, however not excluded that except this range.
As shown in figure 11, at the end of driving compressor positioning trip, real-time detection busbar voltage size, when detecting mother
When line voltage is in peak value vicinity (can also be in the slightly less than peak value) of a nearest period of waves, determine at this time for positioning
At the time of operation is switched on inscription of loop, otherwise continues positioning trip and be not switched on inscription of loop.It can clearly see
To switching moment busbar voltage from peak value near mutate, with open-loop current impact, busbar voltage will be fallen rapidly,
To which controller can export enough voltage when guaranteeing to be switched to the operation of speed closed loop fixed frequency, maximum electric motor starting is obtained
Torque.
As shown in figure 11, when driving compressor is in the open loop operation stage, open loop revolving speed is risen to after setting value, in real time
Busbar voltage size is detected, if detecting that busbar voltage is in the peak value vicinity of a nearest period of waves at this time (can also be with
In slightly less than peak value) when, at the time of determining that being switched to the speed closed loop fixed frequency that oils for open loop operation at this time runs, otherwise
Continue open loop operation and is not switched to the speed closed loop fixed frequency operation that oils.It can clearly see the mother of switching moment
Line voltage from peak value near mutate, with speed closed loop and with oil fixed frequency operation, it will be seen that busbar voltage is fast
Speed is fallen, and using the above method, guarantees that controller can export enough voltage when operating status switching, obtain maximum motor and rise
Kinetic moment, drive system priming speed is fast, and starting capability is strong, and success rate is high.
The numerical values recited of the carrier frequency in entire starting operation stage can be unfolded phase current waveform by oscillograph and look into
It sees, as shown in figure 12, method is to read 2 phase current staircase periodics with oscillograph, that is, can be read to obtain the numerical value of carrier frequency
Size.
Driven compressor system under the above-mentioned random carrier frequency control based on bus no electrolytic capacitor starts controlling party
Method, frequency used by the entire start-up course of driven compressor system are random carrier frequency, and random carrier frequency can reduce load
Harmonic energy amplitude near wave frequency rate and its integral multiple is uniformly divided the harmonic wave distribution on entire frequency spectrum, is positioned by control
Location current when operation increases until the bus voltage value obtained when reaching preset threshold according to detection and preset direct current are female
Line voltage waveform diagram, which successively controls, enters open loop operation and the speed closed loop fixed frequency operation that oils, it is ensured that is switched to revolving speed and closes
Controller can export enough voltage when ring fixed frequency is run, and obtain maximum electric motor starting torque, and drive system starts speed
Degree is fast, starting capability is strong, success rate and high reliablity, wherein starting capability is strong, represents rotor-position and applies accurate, will not go out
The phenomenon that existing step-out, entire starting process is clearly very steady, and driving compressor positioning trip, open loop fortune can be effectively reduced
Noise vibration when row and the speed closed loop fixed frequency that oils are run, avoids traditional drive control method starting operation stage
Noise vibration is big and easily starting failure, difficult problem.
It should be understood that although each step in the flow chart of Fig. 2-6 is successively shown according to the instruction of arrow,
These steps are not that the inevitable sequence according to arrow instruction successively executes.Unless expressly stating otherwise herein, these steps
Execution there is no stringent sequences to limit, these steps can execute in other order.Moreover, at least one in Fig. 2-6
Part steps may include that perhaps these sub-steps of multiple stages or stage are not necessarily in synchronization to multiple sub-steps
Completion is executed, but can be executed at different times, the execution sequence in these sub-steps or stage is also not necessarily successively
It carries out, but can be at least part of the sub-step or stage of other steps or other steps in turn or alternately
It executes.
In one embodiment, as shown in figure 13, a kind of driven compressor system starts control device, and device includes parameter
Module 110, location current control module 120, bus voltage value detection module 130 and operation switching control module 140 are obtained,
In:
Parameter acquisition module 110, for obtaining random carrier frequency and initial alignment electric current；Location current control module
120, for according to random carrier frequency and initial alignment current control driven compressor system positioning trip, control output to pressure
The location current of contracting machine drive system increases, and detects and obtain updated location current；Bus voltage value detection module 130,
For when detecting that updated location current reaches preset threshold in default positioning duration, detection to obtain driven compressor system
The bus voltage value of the DC bus side of system；Switching control module 140 is run, for according to bus voltage value and preset direct current
Successively switched on inscription of loop and the closed loop fixed frequency operation that oils of busbar voltage waveform diagram control driven compressor system.
In one embodiment, operation switching control module includes open loop operation switch unit and the closed loop fixed frequency that oils
Switch unit is run, open loop operation switch unit, which is used to work as, detects busbar voltage according to preset DC bus-bar voltage waveform diagram
When value reaches the first default busbar voltage threshold value, the switched on inscription of loop of driven compressor system is controlled, is detecting open loop turn
After speed reaches preset rotation speed value, detection obtains updated bus voltage value again；The operation switching of the closed loop that oils fixed frequency is single
Member detects that updated bus voltage value reaches the second default bus according to preset DC bus-bar voltage waveform diagram for working as
When voltage threshold, control driven compressor system switches to the closed loop fixed frequency operation that oils.
In another embodiment, operation switching control module further includes when according to preset DC bus-bar voltage waveform diagram
When detecting that bus voltage value is not up to the first default busbar voltage threshold value, control bus voltage value detection module detects to obtain mother
Line voltage value.
In yet another embodiment, operation switching control module further includes when according to preset DC bus-bar voltage waveform diagram
When detecting that updated bus voltage value is not up to the second default busbar voltage threshold value, control open loop operation switch unit is again
Detection obtains updated bus voltage value.
It in one embodiment, further include detecting in default positioning duration after update after location current control module
Location current when being not up to preset threshold, control location current control module control again to be exported to driven compressor system
Location current increases, and detects and obtain updated location current.
It in one embodiment, further include noise vibration detection module and carrier frequency control after parameter acquisition module
Module, noise vibration detection module is for detecting noise vibration；Carrier frequency control module is used to make an uproar when noise vibration default
When in sound oscillating region, the carrier frequency in next control period is set as fixed value；When noise vibration is not in default noise vibration
When in range, the carrier frequency in next control period is set as random number.
Driven compressor system starting control dress under the above-mentioned random carrier frequency control based on bus no electrolytic capacitor
It sets, frequency used by the entire start-up course of driven compressor system is random carrier frequency, and random carrier frequency can reduce load
Harmonic energy amplitude near wave frequency rate and its integral multiple is uniformly divided the harmonic wave distribution on entire frequency spectrum, is positioned by control
Location current when operation increases until the bus voltage value obtained when reaching preset threshold according to detection and preset direct current are female
Line voltage waveform diagram, which successively controls, enters open loop operation and the speed closed loop fixed frequency operation that oils, it is ensured that is switched to revolving speed and closes
Controller can export enough voltage when ring fixed frequency is run, and obtain maximum electric motor starting torque, and drive system starts speed
Degree is fast, starting capability is strong, success rate and high reliablity, wherein starting capability is strong, represents rotor-position and applies accurate, will not go out
The phenomenon that existing step-out, entire starting process is clearly very steady, and driving compressor positioning trip, open loop fortune can be effectively reduced
Noise vibration when row and the speed closed loop fixed frequency that oils are run.
Specific restriction about driven compressor system starting control device may refer to above for driven compressor
System starts the restriction of control method, and details are not described herein.Above-mentioned compressor drive system starts each mould in control device
Block can be realized fully or partially through software, hardware and combinations thereof.Above-mentioned each module can be embedded in the form of hardware or independence
In processor in computer equipment, it can also be stored in a software form in the memory in computer equipment, in order to
Processor, which calls, executes the corresponding operation of the above modules.
In one embodiment, a kind of computer readable storage medium is provided, computer program is stored thereon with, is calculated
Machine program performs the steps of when being executed by processor obtains random carrier frequency and initial alignment electric current；According to random carrier wave
Frequency and initial alignment current control driven compressor system positioning trip, the positioning electricity of control output to driven compressor system
Stream increases, and detects and obtain updated location current；Detecting that updated location current reaches in default positioning duration
When preset threshold, detection obtains the bus voltage value of the DC bus side of driven compressor system；According to bus voltage value and in advance
If DC bus-bar voltage waveform diagram control driven compressor system successively switched on inscription of loop and oil closed loop fixed frequency
Operation.
In one embodiment, it is female according to bus voltage value and preset direct current when computer program is executed by processor
Line voltage waveform diagram control driven compressor system successively switched on inscription of loop and oil closed loop fixed frequency operation the step of,
It include: to work as to detect that bus voltage value reaches the first default busbar voltage threshold value according to preset DC bus-bar voltage waveform diagram
When, the control switched on inscription of loop of driven compressor system detects again after detecting that open loop revolving speed reaches preset rotation speed value
Obtain updated bus voltage value；When detecting updated bus voltage value according to preset DC bus-bar voltage waveform diagram
When reaching the second default busbar voltage threshold value, control driven compressor system switches to the closed loop fixed frequency operation that oils.
In one embodiment, it is female according to bus voltage value and preset direct current when computer program is executed by processor
Line voltage waveform diagram control driven compressor system successively switched on inscription of loop and oil closed loop fixed frequency operation the step of,
Further include: when detecting that bus voltage value is not up to the first default busbar voltage threshold according to preset DC bus-bar voltage waveform diagram
When value, the step of detection obtains the bus voltage value of DC bus side of driven compressor system is returned.
In one embodiment, it is female according to bus voltage value and preset direct current when computer program is executed by processor
Line voltage waveform diagram control driven compressor system successively switched on inscription of loop and oil closed loop fixed frequency operation the step of,
Further include: it is default female when detecting that updated bus voltage value is not up to second according to preset DC bus-bar voltage waveform diagram
When line voltage threshold value, the step of detection obtains updated bus voltage value again is returned.
In one embodiment, when computer program is executed by processor, according to random carrier frequency and initial alignment electricity
The location current of flow control driven compressor system positioning trip, control output to driven compressor system increases, and detects
After the step of to updated location current, further includes: detecting that updated location current is not in default positioning duration
When reaching preset threshold, return control output to driven compressor system location current increase, and detect obtain it is updated
The step of location current.
In one embodiment, when computer program is executed by processor, random carrier frequency and initial alignment electricity are obtained
After the step of stream, further includes: detection noise vibration；When noise vibration is within the scope of default noise vibration, next control is set
The carrier frequency in period processed is fixed value；When noise vibration is not within the scope of default noise vibration, next control period is set
Carrier frequency be random number.
Those of ordinary skill in the art will appreciate that realizing all or part of the process in above-described embodiment method, being can be with
Instruct relevant hardware to complete by computer program, computer program to can be stored in a non-volatile computer readable
It takes in storage medium, the computer program is when being executed, it may include such as the process of the embodiment of above-mentioned each method.Wherein, this Shen
Please provided by any reference used in each embodiment to memory, storage, database or other media, may each comprise
Non-volatile and/or volatile memory.Nonvolatile memory may include read-only memory (ROM), programming ROM
(PROM), electrically programmable ROM (EPROM), electrically erasable ROM (EEPROM) or flash memory.Volatile memory may include
Random access memory (RAM) or external cache.By way of illustration and not limitation, RAM is available in many forms,
Such as static state RAM (SRAM), dynamic ram (DRAM), synchronous dram (SDRAM), double data rate sdram (DDRSDRAM), enhancing
Type SDRAM (ESDRAM), synchronization link (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM
(RDRAM), direct memory bus dynamic ram (DRDRAM) and memory bus dynamic ram (RDRAM) etc..
In one embodiment, a kind of driven compressor system starting control equipment, including controller and it is all connected with control
Current detection means, busbar voltage detection device, random generator and the driven compressor system of device, random generator output with
Airborne wave frequency rate is to controller；Current detection means is for detecting location current and being sent to controller；Busbar voltage detection dress
It sets for detecting bus voltage value and being sent to controller；Controller is for obtaining random carrier frequency and initial alignment electric current；
According to random carrier frequency and initial alignment current control driven compressor system positioning trip, control output to driven compressor
The location current of system increases, and detects and obtain updated location current；It is updated in default positioning duration detecting
When location current reaches preset threshold, detection obtains the bus voltage value of the DC bus side of driven compressor system；And root
According to bus voltage value and preset DC bus-bar voltage waveform diagram control driven compressor system successively switched on inscription of loop and
The operation of the closed loop that oils fixed frequency.
The specific restriction for starting control equipment about driven compressor system may refer to above for driven compressor
System starts the restriction of control method, and details are not described herein.
Driven compressor system starting control under the above-mentioned random carrier frequency control based on bus no electrolytic capacitor is set
Standby, frequency used by the entire start-up course of driven compressor system is random carrier frequency, and random carrier frequency can reduce load
Harmonic energy amplitude near wave frequency rate and its integral multiple is uniformly divided the harmonic wave distribution on entire frequency spectrum, is positioned by control
Location current when operation increases until the bus voltage value obtained when reaching preset threshold according to detection and preset direct current are female
Line voltage waveform diagram, which successively controls, enters open loop operation and the speed closed loop fixed frequency operation that oils, it is ensured that is switched to revolving speed and closes
Controller can export enough voltage when ring fixed frequency is run, and obtain maximum electric motor starting torque, and drive system starts speed
Degree is fast, starting capability is strong, success rate and high reliablity, wherein starting capability is strong, represents rotor-position and applies accurate, will not go out
The phenomenon that existing step-out, entire starting process is clearly very steady, and driving compressor positioning trip, open loop fortune can be effectively reduced
Noise vibration when row and the speed closed loop fixed frequency that oils are run.
In one embodiment, a kind of refrigerator, including above-mentioned compressor drive system starting control equipment.
Above-mentioned refrigerator, frequency used by the entire start-up course of driven compressor system is random carrier frequency, with airborne
Wave frequency rate can reduce the harmonic energy amplitude near carrier frequency and its integral multiple, uniformly divide the harmonic wave point on entire frequency spectrum
Cloth, location current when by control positioning trip increase busbar voltage when reaching preset threshold, obtained according to detection
Value and preset DC bus-bar voltage waveform diagram, which successively control, enters open loop operation and the speed closed loop fixed frequency operation that oils, can
Controller can export enough voltage when guarantee is switched to the operation of speed closed loop fixed frequency, obtain maximum electric motor starting power
Square, drive system priming speed is fast, starting capability is strong, success rate and high reliablity, wherein starting capability is strong, represents rotor position
The phenomenon that it is accurate to set application, is not in step-out, entire starting process is clearly very steady, and driving compression can be effectively reduced
Noise vibration when machine positioning trip, open loop operation and the speed closed loop fixed frequency that oils are run.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
The several embodiments of the application above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the concept of this application, various modifications and improvements can be made, these belong to the protection of the application
Range.Therefore, the scope of protection shall be subject to the appended claims for the application patent.
Claims (10)
1. a kind of driven compressor system starts control method, which comprises
Obtain random carrier frequency and initial alignment electric current；
According to the random carrier frequency and initial alignment current control driven compressor system positioning trip, control output to institute
The location current for stating driven compressor system increases, and detects and obtain updated location current；
When detecting that the updated location current reaches preset threshold in default positioning duration, detection obtains the compression
The bus voltage value of the DC bus side of machine drive system；
The driven compressor system is controlled according to the bus voltage value and preset DC bus-bar voltage waveform diagram successively to cut
Shift to open loop operation and the closed loop fixed frequency operation that oils.
2. the method according to claim 1, wherein described female according to the bus voltage value and preset direct current
Line voltage waveform diagram controls the driven compressor system successively switched on inscription of loop and the closed loop fixed frequency operation that oils
Step, comprising:
When detecting that the bus voltage value reaches the first default busbar voltage threshold according to preset DC bus-bar voltage waveform diagram
When value, the switched on inscription of loop of driven compressor system is controlled, after detecting that open loop revolving speed reaches preset rotation speed value, then
Secondary detection obtains updated bus voltage value；
It is pre- when detecting that the updated bus voltage value reaches second according to the preset DC bus-bar voltage waveform diagram
If when busbar voltage threshold value, controlling the driven compressor system and switching to the closed loop fixed frequency operation that oils.
3. according to the method described in claim 2, it is characterized in that, described female according to the bus voltage value and preset direct current
Line voltage waveform diagram controls the driven compressor system successively switched on inscription of loop and the closed loop fixed frequency operation that oils
Step, further includes:
When detecting that the bus voltage value is not up to the first default bus according to the preset DC bus-bar voltage waveform diagram
When voltage threshold, return it is described detect obtain the driven compressor system DC bus side bus voltage value the step of.
4. according to the method described in claim 2, it is characterized in that, described female according to the bus voltage value and preset direct current
Line voltage waveform diagram controls the driven compressor system successively switched on inscription of loop and the closed loop fixed frequency operation that oils
Step, further includes:
When detecting that the updated bus voltage value is not up to second according to the preset DC bus-bar voltage waveform diagram
When default busbar voltage threshold value, described the step of detection obtains updated bus voltage value again is returned.
5. the method according to claim 1, wherein described according to the random carrier frequency and initial alignment electricity
The location current of flow control driven compressor system positioning trip, control output to the driven compressor system increases, and examines
After the step of measuring updated location current, further includes:
When detecting that the updated location current is not up to preset threshold in default positioning duration, it is defeated to return to the control
Increase out to the location current of the driven compressor system, and detects the step of obtaining updated location current.
6. the method according to claim 1, wherein random carrier frequency and the initial alignment electric current of obtaining
After step, further includes:
Detect noise vibration；
When the noise vibration is within the scope of default noise vibration, the carrier frequency in next control period is set as fixed value；
When the noise vibration is not within the scope of default noise vibration, it is random for setting the carrier frequency in next control period
Number.
7. a kind of driven compressor system starts control device, which is characterized in that described device includes:
Parameter acquisition module, for obtaining random carrier frequency and initial alignment electric current；
Location current control module, for according to the random carrier frequency and initial alignment current control driven compressor system
The location current of positioning trip, control output to the driven compressor system increases, and detects and obtain updated positioning electricity
Stream；
Bus voltage value detection module, for detecting that the updated location current reaches default in default positioning duration
When threshold value, detection obtains the bus voltage value of the DC bus side of the driven compressor system；
Switching control module is run, for according to the bus voltage value and the control of preset DC bus-bar voltage waveform diagram
Successively switched on inscription of loop and the closed loop fixed frequency operation that oils of driven compressor system.
8. a kind of computer readable storage medium, is stored thereon with computer program, which is characterized in that the computer program quilt
The step of processor realizes method described in any one of claims 1 to 6 when executing.
9. a kind of driven compressor system starting control equipment, which is characterized in that including controller and be all connected with the controller
Current detection means, busbar voltage detection device, random generator and driven compressor system,
The random generator exports random carrier frequency to the controller；
The current detection means is for detecting location current and being sent to the controller；
The busbar voltage detection device is for detecting bus voltage value and being sent to the controller；
The controller successively switches to open loop fortune for the control of method described in -6 according to claim 1 driven compressor system
Row and the closed loop fixed frequency operation that oils.
10. a kind of refrigerator, which is characterized in that start control equipment including driven compressor system as claimed in claim 9.
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| CN201811352928.0A CN109245657B (en) | 2018-11-14 | 2018-11-14 | Compressor driving system starting control method, device and equipment and refrigerator |
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| CN201811352928.0A CN109245657B (en) | 2018-11-14 | 2018-11-14 | Compressor driving system starting control method, device and equipment and refrigerator |
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| CN113162515A (en) * | 2021-04-29 | 2021-07-23 | 臻驱科技（上海）有限公司 | Bus capacitance current resonance suppression method and system |
| CN114295899A (en) * | 2021-12-30 | 2022-04-08 | 深圳市汇川技术股份有限公司 | Bus capacitance state detection method, device, storage medium and device |
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| CN115325767B (en) * | 2021-05-10 | 2023-11-21 | 安徽美芝制冷设备有限公司 | Refrigerator and starting method and device of constant-frequency compressor of refrigerator |
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