CN209497401U - Drive control circuit and household appliance - Google Patents
Drive control circuit and household appliance Download PDFInfo
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- CN209497401U CN209497401U CN201920488338.4U CN201920488338U CN209497401U CN 209497401 U CN209497401 U CN 209497401U CN 201920488338 U CN201920488338 U CN 201920488338U CN 209497401 U CN209497401 U CN 209497401U
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Abstract
The utility model provides a kind of drive control circuit and household appliance, wherein drive control circuit includes: harmonic filtration module, and the power supply signal of access network system input, the harmonic filtration module is configured as filtering out the harmonic signal in the power supply signal；Voltage absorption compensation branch, with inverter parallel, the voltage absorption compensation branch includes concatenated capacitive element and switching device, the switching device is configured as controlling the capacitive element progress charge or discharge, wherein, the capacitive element electric discharge carries out voltage compensation to the inverter, and the inverter is configured as driving load running.Technical solution provided by the utility model efficiently reduces load current peak, solves the caused beat frequency noise problem when the alternating voltage of input is too low.
Description
Technical field
The utility model relates to Drive Control Technique fields, in particular to a kind of drive control circuit and a kind of family
Electric equipment.
Background technique
In general, the power factor of passive PFC (Power Factor Correction, PFC) circuit
It is very low, and the capacitor very big using capacity is needed, cause passive PFC circuit cost very high.
And for the circuit methods of general no electrolytic capacitor, there is following disadvantage:
The first, DC bus-bar voltage fluctuation is big, causes load current fluctuations big, and load current peak is high, it is therefore desirable to needle
Overcurrent protection to power module setting high gauge, leads to cost increase；
The second, it is present in the periodic phenomena that the identical busbar voltage of supply frequency is insufficient, can not contribute, causes to clap
The problems such as frequency noise.
Therefore, a kind of drive control circuit that can solve above-mentioned technical problem is needed at present.
Utility model content
The utility model aims to solve at least one of technical problems existing in the prior art or related technologies.
For this purpose, the first aspect of the utility model proposes a kind of drive control circuit.
The second aspect of the utility model proposes a kind of household appliance.
In view of this, the first aspect of the utility model provides a kind of drive control circuit, comprising: harmonic filtration mould
Block, the power supply signal of access network system input, the harmonic filtration module is configured as filtering out humorous in the power supply signal
Wave signal；Voltage absorption compensation branch, and inverter parallel, the voltage absorption compensation branch include concatenated capacitive element and
Switching device, the switching device are configured as controlling the capacitive element progress charge or discharge, wherein the capacitive element
Electric discharge carries out voltage compensation to the inverter, and the inverter is configured as driving load running.
In the technical scheme, drive control circuit is provided with harmonic filtration module, for filtering out network system input
Harmonic signal in power supply signal, meanwhile, drive control circuit is additionally provided with capacitive element and switching device, switching device and appearance
Property element series connection, and control capacitive element charge or discharge.When power supply signal is higher, switching device control capacitive element fills
Electricity, when power supply signal is lower, switching device controls capacitive element electric discharge, to carry out voltage compensation to inverter.
Technical solution provided by the utility model is applied, if detecting that power supply signal is too low, passes through switching device
Capacitive element electric discharge is controlled, with realization to the voltage compensation of inverter, the capacitor that wherein capacitive element need not select capacity very big,
The cost that voltage compensating circuit can be reduced, avoids system power from fluctuating, and draws to solve when the alternating voltage of input is too low
The beat frequency noise problem risen.
Specifically, it is the electrolytic capacitor of 10uF to 2000uF that capacitance range, which can be used, in capacitive element, without selecting capacitance
Bigger capacitor is, it can be achieved that preferable cost control, controller change according to collected ac voltage size driving switch pipe
Become switching mode, to control electrolytic capacitor charge or discharge.
In addition, the drive control circuit in above-mentioned technical proposal provided by the utility model can also have additional skill as follows
Art feature:
In the above-mentioned technical solutions, further, the inverter access is described between high voltage bus and low-voltage bus bar
One end of switching device is connected to the high voltage bus, and one end of the capacitive element is connected to the low-voltage bus bar.
In the technical scheme, inverter access is between high voltage bus and low-voltage bus bar, by the direct current signal on bus
It is converted into the AC signal of driving load running.One end of switch element is connected to high voltage bus, and an end of capacitive element is connected to low
Bus is pressed, to realize the control to capacitive element charging, electric discharge.
In any of the above-described technical solution, further, drive control circuit further include: controller, the controller connect
It is connected to the switching device, to regulate and control the on state of the switching device；Wherein, if the power supply signal is greater than or equal to the
One power supply signal threshold value, then the controller triggers the switching device and is connected in the first pattern, to control the capacitive element
It charges, in addition, if the controller detects the power supply signal less than the second power supply signal threshold value, the controller
It triggers the switching device to be connected in a second mode, be discharged with controlling the capacitive element.
In the technical scheme, controller is according to the conduction mode of the size control switch device of power supply signal.Specifically,
When ac voltage signal is more than first voltage threshold value, illustrate that alternating voltage is higher, controller control switch device is at this time with the
One mode conducting, to reduce load current amplitude for capacitive element charging；When ac voltage signal is less than second voltage threshold value
When, illustrate that alternating voltage is too low at this time, controller control switch device is connected in a second mode at this time, so that capacitive element is put
Electricity carries out power compensation to inverter.
Wherein, the first power supply signal threshold value and the second power supply signal threshold value can take same numerical value or different numerical value, and the
One power supply signal threshold value and the second power supply signal threshold value are mainly determined by the power of the power and inverter that load.
Wherein, power supply signal can be the alternating voltage of input rectifying module, be also possible to the direct current of rectification module output
Voltage.
In any of the above-described technical solution, further, the switching device includes: power tube, with the capacitive element
Series connection, the control terminal of the power tube are connected to the instruction output end of the controller, and described instruction output end is to the control
End output control instruction, the control instruction are configured as controlling the power tube on or off；Reverse-biased freewheeling diode, institute
The both ends for stating reverse-biased freewheeling diode are respectively connected to drain electrode and the source electrode of the power tube, wherein if the power tube is connected,
Then the capacitive element is through the power tube to the load discharge, if the power tube ends, the capacitive element is through institute
It states reverse-biased freewheeling diode charging or is failure to actuate.
In the technical scheme, switching device includes power tube and reverse-biased freewheeling diode, power tube and capacitive element string
Connection, the instruction output end of controller are connected to the control terminal of power tube, and to send control instruction to power tube, power tube is according to control
System instruction change on state (on or off), the both ends of reverse-biased freewheeling diode respectively with the drain electrode of power tube and source electrode phase
Connection, when power tube conducting when, capacitive element through power tube to load discharge, to realize voltage compensation, when power tube cut-off when,
The voltage signal of input is capacitive element charging through reverse-biased freewheeling diode, to reduce load current peak.At load current peak
Value usually for normal water, without reducing load current peak, be failure to actuate by capacitive element.
Wherein, the capacitive element refers to that power supply signal is through reverse-biased two pole of afterflow through the reverse-biased freewheeling diode charging
Pipe charges to capacitive element, meanwhile, power supply signal is powered the load of operation, and capacitive element charging process is complete
Charging process, i.e., when capacitive element discharges, the discharge voltage of capacitive element is greater than the supply voltage on route, and then realizes electricity
Pressure compensation.
Specifically, power tube can it is preferable to use IGBT (Insulated Gate Bipolar Transistor, insulation
Grid bipolar junction transistor) type power tube, MOSFET (Metal-Oxide-Semiconductor Field- can also be selected
Effect Transistor, metal-oxide semiconductor (MOS) power field effect transistor), reverse-biased freewheeling diode can be independently arranged,
It can also be integrally disposed with IGBT or MOSFET.
In any of the above-described technical solution, further, drive control circuit further include: rectification module is set to the appearance
Between the input terminal and the harmonic filtration module of property element, the rectification module is configured as being converted to the power supply signal
Direct current signal, wherein the direct current signal is configured as charging to the capacitive element, and provides needed for the load running
Electricity, the inverter is configured as controlling the direct current signal and drives the load running.
In the technical scheme, rectification module is provided in drive control circuit, rectification module is connected to capacitive element
Between input terminal and filter module, the power supply signal of network system input enters rectification module after filter module filters out noise,
Rectification module rectifies power supply signal, and by the DC signal output obtained after rectification to capacitive element and loading section,
To charge to capacitive element, and provide operation required electricity to load.Direct current signal is converted AC signal by inverter, control
System driving load running.
In any of the above-described technical solution, further, if the load includes that single phase ac loads, the inverter
Including corresponding single-phase inversion circuit, the single-phase inversion circuit includes: two upper bridge arm power devices and two lower bridge arm function
Rate device accesses between the output end of the voltage absorption compensation branch and the input terminal of the load, if the load is wrapped
Three-phase alternating current load is included, then the inverter includes corresponding three-phase inverting circuit, and the three-phase inverting circuit includes: on three
Bridge arm power device and three lower bridge arm power devices access the output end in the voltage absorption compensation branch and the load
Input terminal between, wherein the upper bridge arm power device of phase and the lower bridge arm power of a corresponding phase
Devices in series connects, and the upper bridge arm power device and the lower bridge arm power device of same phase do not simultaneously turn on.
In the technical scheme, it if load includes single phase ac load, is provided in inverter corresponding single-phase
Inverter circuit, to export corresponding driving signal to single phase ac load.Specifically, single phase ac load can be single-phase electricity
Machine is also possible to single-phase inductive load.
Wherein, single-phase inversion circuit includes two upper bridge arm power devices and two lower bridge arm power devices, is connected to appearance
Between the deferent segment of property element and the input terminal of load.
If load includes three-phase alternating current load, corresponding three-phase inverting circuit is provided in inverter, with to three
Phase AC load exports corresponding driving signal.Specifically, three-phase alternating current load can be induction machine, and it is same to be also possible to permanent magnetism
Walk motor.
Wherein, three-phase inverting circuit includes three upper bridge arm power devices and three lower bridge arm power devices, is connected to appearance
Between the deferent segment of property element and the input terminal of load.The lower bridge of the upper corresponding phase of bridge arm power device of each phase
The series connection of arm power device, the upper bridge arm power device and lower bridge arm power device of same-phase will not simultaneously turn on, and intersect to three
The load of current load exports a phase driving signal, and the upper bridge arm power device and lower bridge arm power device of three phases are alternately led
Logical, the load loaded to three-phase alternating current exports three-phase driving signal.
In any of the above-described technical solution, further, between the source electrode and drain electrode of any upper bridge arm power device
It is connected to a reverse-biased freewheeling diode, is denoted as the reverse-biased freewheeling diode of bridge arm, the source electrode of any lower bridge arm power device
It is connected to a reverse-biased freewheeling diode between drain electrode, is denoted as the reverse-biased freewheeling diode of lower bridge arm.
In the technical scheme, between upper bridge arm power device and the source electrode and drain electrode of lower bridge arm power device between be connected to one
A reverse-biased freewheeling diode, the specially upper reverse-biased freewheeling diode of bridge arm and the reverse-biased freewheeling diode of lower bridge arm.
In any of the above-described technical solution, further, any upper bridge arm power device includes metal oxide half
Conductor field effect transistor and/or insulated gate bipolar transistor, any lower bridge arm power device includes metal oxide
Semiconductor field effect transistor and/or insulated gate bipolar transistor, wherein the collector of the insulated gate bipolar transistor
It is connected as the drain electrode, the emitter of the insulated gate bipolar transistor is connected as the source electrode.
In the technical scheme, upper bridge arm power device include Metal Oxide Semiconductor Field Effect Transistor (i.e.
MOSFET) and/or insulated gate bipolar transistor (i.e. IGBT), in the case where having used insulated gate bipolar transistor, absolutely
The collector of edge grid bipolar junction transistor is connected as the drain electrode, and emitter is connected as the source electrode.Lower bridge arm power device
Part includes Metal Oxide Semiconductor Field Effect Transistor (i.e. MOSFET) and/or insulated gate bipolar transistor (i.e. IGBT),
In the case where having used insulated gate bipolar transistor, the collector of insulated gate bipolar transistor connects as the drain electrode
It connects, emitter is connected as the source electrode.
In any of the above-described technical solution, further, the power tube includes metal oxide semiconductor field-effect crystalline substance
Body pipe and/or insulated gate bipolar transistor, wherein the grid of the Metal Oxide Semiconductor Field Effect Transistor is as institute
The instruction output end that control terminal is connected to the controller is stated, the base stage of the insulated gate bipolar transistor is as the control
End is connected to the instruction output end of the controller.
In the technical scheme, power tube include Metal Oxide Semiconductor Field Effect Transistor (i.e. MOSFET) and/or
Insulated gate bipolar transistor (i.e. IGBT), wherein the grid of MOSFET as control terminal, the instruction output end of controller with
The grid of MOSFET is connected, and as control terminal, the instruction output end of controller is connected the MOSFET of IGBT with the base stage of IGBT
It connects.
In any of the above-described technical solution, further, the harmonic filtration module includes the second capacitive element, and described the
Two capacitive elements are connected across two alternating current circuits in the drive control circuit, and the alternating current circuit carrying signal is the confession
Electric signal.
In the technical scheme, harmonic filtration module include bridging exchanged with drive control circuit the side alternating current circuit Liang Tiao it
Between the second capacitive element specifically carry power supply signal on alternating current circuit, capacitive element is filter capacitor, passes through filtering
Capacitor filters out the clutter in the power supply signal carried on alternating current circuit.
In any of the above-described technical solution, further, second capacitive element includes a capacity cell, and/or
Second capacitive element includes the capacity cell of multiple series connection and/or parallel connection, wherein the capacity of second capacitive element takes
Value range is 1uF~100uF.
Optionally, the capacity value range of the second capacitive element is 10uF~20uF.
In any of the above-described technical solution, further, the harmonic filtration module further includes inductive element, the perception
Element is serially connected at least one alternating current circuit in the drive control circuit, and the alternating current circuit carrying signal is for telecommunications
Number, wherein the sensibility reciprocal value range of the inductive element is 200uH~25mH.
In the technical scheme, harmonic filtration module is additionally provided with inductive element, and inductive element is connected in series in driving control
It is exchanged in circuit processed at least one alternating current circuit of survey, inductive element is filter inductance, filters out AC line by filter inductance
The clutter in power supply signal that road is carried.
Optionally, the sensibility reciprocal value range of inductive element is 200uH~25mH.
Optionally, the sensibility reciprocal of inductive element is 500uH.
Optionally, the sensibility reciprocal of inductive element is 5mH.
In any of the above-described technical solution, further, the harmonic filtration module further includes inductive element, the perception
Element is serially connected with the high voltage bus and/or the low-voltage bus bar, and the DC line carrying signal is the direct current signal,
In, the sensibility reciprocal value range of the inductive element is 200uH~25mH.
In the technical scheme, inductive element is connected in series in pressure bus that direct current in drive control circuit is surveyed and/or low
It presses on bus, inductive element is filter inductance, is filtered out by filter inductance miscellaneous in the direct current signal carried on DC line
Wave.
Optionally, the sensibility reciprocal value range of inductive element is 200uH~25mH.
Optionally, the sensibility reciprocal of inductive element is 500uH.
Optionally, the sensibility reciprocal of inductive element is 5mH.
In any of the above-described technical solution, further, the load of the load includes blower and/or compressor or institute
The load for stating load includes induction machine and/or permanent magnet synchronous motor.
In any of the above-described technical solution, further, the capacitive element includes electrolytic capacitor and/or the capacitive
Element includes a capacity cell and/or the capacitive element includes the capacity cell of multiple series connection and/or parallel connection.
In any of the above-described technical solution, further, the capacitance value range of the capacitive element be 10uF~
2000uF。
Optionally, the capacitance of capacitive element is 82uF.
Optionally, the capacitance of capacitive element is 220uF.
Optionally, the capacitance of capacitive element is 470uF.
Optionally, the capacitance of capacitive element is 560uF.
Optionally, the capacitance of capacitive element is 680uF.
Optionally, the capacitance of capacitive element is 820uF.
In any of the above-described technical solution, further, the power supply source of the controller includes isolated power supply or bootstrapping electricity
Source, wherein the bootstrap power supply includes bootstrapping power supply circuit, bootstrap diode and bootstrap capacitor in the inverter, described
The anode of bootstrap diode is connected to the anode of the bootstrapping power supply circuit, the cathode of the bootstrap diode be connected to it is described from
The anode of capacitor is lifted, the anode of the bootstrap capacitor is connected to the feeder ear of the controller.
In the technical scheme, controller is provided with power supply, and specifically, power supply includes isolated power supply or bootstrapping
Power supply is connected to the feeder ear of controller by isolated power supply, provides electricity for controller when power supply is isolated power supply
Can, when power supply is bootstrap power supply, bootstrap power supply includes concatenated bootstrapping power supply circuit, isolated power supply or bootstrap power supply,
The cathode of bootstrapping power supply circuit is connected with the low-voltage bus bar in two buss lines, the anode and bootstrap diode of power supply circuit of booting
Anode be connected, while the cathode of bootstrap diode is connected with the anode of bootstrap capacitor, and the cathode of bootstrap capacitor is connected to
The feeder ear of controller, to provide electric energy for controller.
In any of the above-described technical solution, further, the voltage absorption compensation branch further include: with the capacitive member
The concatenated resistive element of part and/or inductance element, the resistive element are used to adjust the size of current for flowing through the capacitive element,
The inductance element is for filtering out the AC noise for flowing through the capacitive element.
In the technical scheme, resistive element and/or inductance element can access between high voltage bus and switching device,
It can also access between capacitive element and low-voltage bus bar, can also access between switching device and capacitive element.
In addition, resistive element includes the resistance of a resistance or multiple series connection and/or parallel connection, similarly, inductance element includes
One inductance or the inductance of multiple series connection and/or parallel connection.
In any of the above-described technical solution, further, the value range of the resistive element is the Ω of 0.1m Ω~10, institute
The value range for stating inductance element is 1uH~10mH.
The second aspect of the utility model provides a kind of household appliance, comprising: load；As in any of the above-described technical solution
The drive control circuit, the drive control circuit access is between network system and load, the drive control circuit
Control network system is configured as to the load supplying.
In the technical scheme, household appliance includes the drive control circuit as described in any of the above-described technical solution, because
This, which includes whole beneficial effects of the drive control circuit as described in any of the above-described technical solution, again not
It repeats again.
In the above-mentioned technical solutions, further, the household appliance includes air conditioner, refrigerator, fan, smoke pumping
At least one of machine, dust catcher and host computer.
Detailed description of the invention
The above-mentioned and/or additional aspect and advantage of the utility model from the description of the embodiment in conjunction with the following figures will
Become obvious and be readily appreciated that, in which:
Fig. 1 shows the schematic diagram of the drive control circuit of one embodiment according to the present utility model；
Fig. 2 shows the schematic diagrames of the drive control circuit of another embodiment according to the present utility model；
Fig. 3 shows the schematic diagram of the drive control circuit of another embodiment according to the present utility model；
Fig. 4 shows the schematic diagram of the drive control circuit of further embodiment according to the present utility model；
Fig. 5 shows the schematic diagram of the drive control circuit of further embodiment according to the present utility model；
Fig. 6 shows the schematic diagram of the drive control circuit of further embodiment according to the present utility model；
Fig. 7 shows the schematic diagram of the drive control circuit of further embodiment according to the present utility model；
Fig. 8 shows the schematic diagram of the drive control circuit of further embodiment according to the present utility model；
Fig. 9 shows the schematic diagram of the drive control circuit of further embodiment according to the present utility model；
Figure 10 shows the schematic diagram of the drive control circuit of further embodiment according to the present utility model；
Figure 11 shows the schematic diagram of the drive control circuit of further embodiment according to the present utility model；
Figure 12 shows the schematic diagram of the drive control circuit of further embodiment according to the present utility model；
Figure 13 shows the schematic diagram of the drive control circuit of further embodiment according to the present utility model；
Figure 14 shows the block diagram of the household appliance of one embodiment according to the present utility model.
Specific embodiment
In order to be more clearly understood that the above objects, features, and advantages of the utility model, with reference to the accompanying drawing and have
The utility model is further described in detail in body embodiment.It should be noted that in the absence of conflict, this Shen
The feature in embodiment and embodiment please can be combined with each other.
Many details are explained in the following description in order to fully understand the utility model, still, this is practical
Novel to be implemented using other than the one described here other modes, therefore, the protection scope of the utility model is simultaneously
It is not limited by the specific embodiments disclosed below.
The drive control circuit according to the utility model some embodiments is described referring to Fig. 1 to Figure 14 and household electrical appliances are set
It is standby.
As shown in Fig. 1 (load is threephase load) and Fig. 2 (load is single-phase load), in the utility model first aspect
In embodiment, a kind of drive control circuit is provided, comprising: harmonic filtration module, the power supply signal of access network system input,
The harmonic filtration module is configured as filtering out the harmonic signal in the power supply signal；Voltage absorption compensation branch, with inversion
Device is in parallel, and the voltage absorption compensation branch includes concatenated capacitive element C1And switching device, the switching device are configured
To control the capacitive element C1Carry out charge or discharge, wherein the capacitive element electric discharge carries out voltage to the inverter
Compensation, the inverter are configured as driving load running.
In this embodiment, drive control circuit is provided with harmonic filtration module, for filtering out the confession of network system input
Harmonic signal in electric signal, meanwhile, drive control circuit is additionally provided with capacitive element C1And switching device.Switching device and appearance
Property element C1Series connection, and control capacitive element C1Charge or discharge.When power supply signal is higher, switching device controls capacitive element
C1Charging.When power supply signal is lower, switching device controls capacitive element C1Electric discharge, to carry out voltage compensation to inverter.
Above-described embodiment provided by the utility model is controlled if detecting that power supply signal is too low by switching device
Capacitive element C1Electric discharge, to realize to the voltage compensation of inverter, wherein capacitive element C1The capacitor that capacity need not be selected very big,
The cost that voltage compensating circuit can be reduced, avoids system power from fluctuating, and draws to solve when the alternating voltage of input is too low
The beat frequency noise problem risen.
Specifically, capacitive element C1It is the electrolytic capacitor of 10uF to 2000uF that capacitance range, which can be used, is held without selecting
It is worth bigger capacitor, it can be achieved that preferable cost control, controller M is according to collected ac voltage size driving switch pipe
Change switching mode, to control electrolytic capacitor charge or discharge.
In one embodiment of the utility model, further, as depicted in figs. 1 and 2, the inverter access is in height
It presses between bus and low-voltage bus bar, one end of the switching device is connected to the high voltage bus, the capacitive element C1One
End is connected to the low-voltage bus bar.
In this embodiment, inverter access turns the direct current signal on bus between high voltage bus and low-voltage bus bar
Turn to the AC signal of driving load running.One end of switch element is connected to high voltage bus, capacitive element C1An end be connected to it is low
Bus is pressed, to realize to capacitive element C1Charging, the control discharged.
In one embodiment of the utility model, further, as shown in Fig. 5, Fig. 6, Fig. 7, Fig. 8 and Fig. 9, driving control
Circuit processed further include: controller M, the controller M are connected to the switching device, to regulate and control the conducting shape of the switching device
State；Wherein, if the power supply signal is greater than or equal to the first power supply signal threshold value, the controller M triggers the derailing switch
Part is connected in the first pattern, to control the capacitive element C1It charges, in addition, if the controller M detects the confession
Electric signal is less than the second power supply signal threshold value, then the controller M triggers the switching device and is connected in a second mode, with control
The capacitive element C1It discharges.
In this embodiment, controller M is according to the conduction mode of the size control switch device of power supply signal.Specifically,
When ac voltage signal is more than first voltage threshold value, illustrate that alternating voltage is higher, controller M control switch device is at this time with the
One mode conducting, for capacitive element C1Charging reduces load current amplitude；When ac voltage signal is less than second voltage threshold value
When, illustrate that alternating voltage is too low at this time, controller M control switch device is connected in a second mode at this time, so that capacitive element C1
Electric discharge carries out power compensation to inverter.
Wherein, the first power supply signal threshold value and the second power supply signal threshold value can take same numerical value or different numerical value, and the
One power supply signal threshold value and the second power supply signal threshold value are mainly determined by the power of the power and inverter that load.
Wherein, power supply signal can be the alternating voltage of input rectifying module, be also possible to the direct current of rectification module output
Voltage.
In one embodiment of the utility model, further, as depicted in figs. 1 and 2, the switching device includes:
Power tube Q, with the capacitive element C1Series connection, the control terminal of the power tube Q are connected to the instruction output of the controller M
End, described instruction output end export control instruction to the control terminal, and the control instruction is configured as controlling the power tube Q
On or off；Reverse-biased sustained diode1, the reverse-biased sustained diode1Both ends be respectively connected to the power tube Q's
Drain electrode and source electrode, wherein if the power tube Q is connected, the capacitive element C1It is put through the power tube Q to the load
Electricity, if the power tube Q ends, the capacitive element C1Through the reverse-biased sustained diode1It charges or is failure to actuate.
In this embodiment, switching device includes power tube Q and reverse-biased sustained diode1, power tube Q and capacitive element C1
Series connection, the instruction output end of controller M are connected to the control terminal of power tube Q, to send control instruction, power tube Q to power tube Q
Change on state (on or off) according to control instruction, reverse-biased sustained diode1The both ends leakage with power tube Q respectively
Pole is connected with source electrode, when power tube Q conducting, capacitive element C1Through power tube Q to load discharge, to realize voltage compensation,
When power tube Q cut-off, the voltage signal of input is through reverse-biased sustained diode1For capacitive element C1Charging, to reduce load electricity
Stream peak value.Load current peak be normal water usually, without reducing load current peak, capacitive element C1It is failure to actuate.
Wherein, the capacitive element C1Through the reverse-biased sustained diode1Charging refers to that power supply signal is through reverse-biased afterflow two
Pole pipe D1To capacitive element C1It charges, meanwhile, power supply signal is powered the load of operation, capacitive element C1It charged
Journey is complete charging process, i.e. capacitive element C1When electric discharge, capacitive element C1Discharge voltage be greater than route on power supply electricity
Pressure, and then realize voltage compensation.
Specifically, power tube Q can it is preferable to use IGBT (Insulated Gate Bipolar Transistor, insulation
Grid bipolar junction transistor) type power tube Q, MOSFET (Metal-Oxide-Semiconductor Field- can also be selected
Effect Transistor, metal-oxide semiconductor (MOS) power field effect transistor), reverse-biased sustained diode1It can independently set
It sets, it can also be integrally disposed with IGBT or MOSFET.
In one embodiment of the utility model, further, as depicted in figs. 1 and 2, drive control circuit is also wrapped
Include: rectification module is set to the capacitive element C1Input terminal and the harmonic filtration module between, the rectification module is matched
It is set to and the power supply signal is converted into direct current signal, wherein the direct current signal is configured as to the capacitive element C1It fills
Electricity needed for electricity, and the offer load running, the inverter are configured as controlling described in the direct current signal driving
Load running.
In this embodiment, rectification module is provided in drive control circuit, rectification module is connected to capacitive element C1's
Between input terminal and filter module, the power supply signal of network system input enters rectification module after filter module filters out noise,
Rectification module rectifies power supply signal, and by the DC signal output obtained after rectification to capacitive element C1And load portion
Point, with to capacitive element C1Charging, and provide operation required electricity to load, direct current signal is converted exchange letter by inverter
Number, control driving load running.
As shown in Fig. 3 (load is threephase load) and Fig. 4 (load is single-phase load), in any of the above-described technical solution,
Further, the voltage absorption compensation branch further include: with the capacitive element C1Concatenated resistive element and/or inductance member
Part L0, the resistive element is for adjusting the size of current for flowing through the capacitive element, the inductance component L0It is flowed through for filtering out
The capacitive element C1AC noise.
In the technical scheme, resistive element and/or inductance component L0Can access in high voltage bus and switching device it
Between, it can also access in capacitive element C1Between low-voltage bus bar, it can also access in switching device and capacitive element C1Between.
In addition, resistive element includes the resistance of a resistance or multiple series connection and/or parallel connection, similarly, inductance component L0Packet
Include the inductance an of inductance or multiple series connection and/or parallel connection.
In any of the above-described technical solution, further, the value range of the resistive element is the Ω of 0.1m Ω~10, institute
State inductance component L0Value range be 1uH~10mH.
In one embodiment of the utility model, further, as shown in Fig. 5, Fig. 6, Figure 10 and Figure 11, if described negative
Carrying includes that single phase ac loads, then the inverter includes corresponding single-phase inversion circuit, and the single-phase inversion circuit includes: two
A upper bridge arm power device and two lower bridge arm power devices, access in the voltage absorption compensation branch output end with it is described
Between the input terminal of load, if the load includes that three-phase alternating current loads, the inverter includes corresponding three-phase inversion electricity
Road, the three-phase inverting circuit include: three upper bridge arm power devices and three lower bridge arm power devices, are accessed in the voltage
Between the output end of absorption compensation branch and the input terminal of the load, wherein the upper bridge arm power device of a phase
Connect with the series connection of the lower bridge arm power device of corresponding phase, the upper bridge arm power device of same phase with it is described
Lower bridge arm power device does not simultaneously turn on.
In this embodiment, it if load includes single phase ac load, is provided in inverter corresponding single-phase inverse
Power transformation road, to export corresponding driving signal to single phase ac load.Specifically, single phase ac load can be monophase machine,
It is also possible to single-phase inductive load.
Wherein, single-phase inversion circuit includes two upper bridge arm power devices and two lower bridge arm power devices, is connected to appearance
Property element C1Deferent segment and load input terminal between.
If load includes three-phase alternating current load, corresponding three-phase inverting circuit is provided in inverter, with to three
Phase AC load exports corresponding driving signal.Specifically, three-phase alternating current load can be induction machine, and it is same to be also possible to permanent magnetism
Walk motor.
Wherein, three-phase inverting circuit includes three upper bridge arm power devices and three lower bridge arm power devices, is connected to appearance
Between the deferent segment of property element and the input terminal of load.The lower bridge of the upper corresponding phase of bridge arm power device of each phase
The series connection of arm power device, the upper bridge arm power device and lower bridge arm power device of same-phase will not simultaneously turn on, and intersect to three
The load of current load exports a phase driving signal, and the upper bridge arm power device and lower bridge arm power device of three phases are alternately led
Logical, the load loaded to three-phase alternating current exports three-phase driving signal.
In one embodiment of the utility model, further, such as Fig. 7, Fig. 8, Fig. 9, Figure 11, Figure 12 and Figure 13 institute
Show, is connected to a reverse-biased freewheeling diode between the source electrode and drain electrode of any upper bridge arm power device, it is anti-to be denoted as bridge arm
Inclined freewheeling diode is connected to a reverse-biased freewheeling diode between the source electrode and drain electrode of any lower bridge arm power device, remembers
Make the reverse-biased freewheeling diode of lower bridge arm.
In this embodiment, between upper bridge arm power device and the source electrode and drain electrode of lower bridge arm power device between be connected to one
Reverse-biased freewheeling diode, the specially upper reverse-biased freewheeling diode of bridge arm and the reverse-biased freewheeling diode of lower bridge arm.
In one embodiment of the utility model, further, any upper bridge arm power device includes metal oxygen
Compound semiconductor field effect transistor and/or insulated gate bipolar transistor, any lower bridge arm power device includes metal
Oxide semiconductor field effect transistor and/or insulated gate bipolar transistor, wherein the insulated gate bipolar transistor
Collector is connected as the drain electrode, and the emitter of the insulated gate bipolar transistor is connected as the source electrode.
In this embodiment, upper bridge arm power device includes Metal Oxide Semiconductor Field Effect Transistor (i.e. MOSFET)
And/or insulated gate bipolar transistor (i.e. IGBT), in the case where having used insulated gate bipolar transistor, insulated gate bipolar
The collector of transistor npn npn is connected as the drain electrode, and emitter is connected as the source electrode.Lower bridge arm power device includes gold
Belong to oxide semiconductor field effect transistor (i.e. MOSFET) and/or insulated gate bipolar transistor (i.e. IGBT), is using
In the case where insulated gate bipolar transistor, the collector of insulated gate bipolar transistor is connected as the drain electrode, emitter
It is connected as the source electrode.
In one embodiment of the utility model, further, the power tube Q includes MOS field
Effect transistor and/or insulated gate bipolar transistor, wherein the grid of the Metal Oxide Semiconductor Field Effect Transistor
The instruction output end of the controller M, the base stage conduct of the insulated gate bipolar transistor are connected to as the control terminal
The control terminal is connected to the instruction output end of the controller M.
In this embodiment, power tube Q include Metal Oxide Semiconductor Field Effect Transistor (i.e. MOSFET) and/or absolutely
Edge grid bipolar junction transistor (i.e. IGBT), wherein the grid of MOSFET as control terminal, the instruction output end of controller M with
The grid of MOSFET is connected, and as control terminal, the instruction output end of controller M is connected the MOSFET of IGBT with the base stage of IGBT
It connects.
In one embodiment of the utility model, further, the harmonic filtration module includes the second capacitive element
C2, the second capacitive element C2It is connected across two alternating current circuits in the drive control circuit, the alternating current circuit carrying letter
Number be the power supply signal.
In this embodiment, harmonic filtration module includes that bridging is exchanged with drive control circuit between the alternating current circuit Liang Tiao of side
The second capacitive element C2, specifically, power supply signal is carry on alternating current circuit, capacitive element is filter capacitor, passes through filtering
Capacitor filters out the clutter in the power supply signal carried on alternating current circuit.
In one embodiment of the utility model, further, the second capacitive element C2Including a capacitor member
Part and/or the second capacitive element C2Capacity cell including multiple series connection and/or parallel connection, wherein the second capacitive member
Part C2Capacity value range be 1uF~100uF.
Optionally, the second capacitive element C2Capacity value range be 10uF~20uF.
In one embodiment of the utility model, further, the harmonic filtration module further includes inductive element, institute
At least one alternating current circuit that inductive element is serially connected in the drive control circuit is stated, the alternating current circuit carrying signal is to supply
Electric signal, wherein the sensibility reciprocal value range of the inductive element is 200uH~25mH.
In this embodiment, harmonic filtration module is additionally provided with inductive element, and inductive element is connected in series in drive control
It is exchanged in circuit at least one alternating current circuit of survey, inductive element is filter inductance, filters out alternating current circuit by filter inductance
On clutter in the power supply signal that is carried.
Optionally, the sensibility reciprocal value range of inductive element is 200uH~25mH.
Optionally, the sensibility reciprocal of inductive element is 500uH.
Optionally, the sensibility reciprocal of inductive element is 5mH.
In one embodiment of the utility model, further, the harmonic filtration module further includes inductive element, institute
It states inductive element and is serially connected with the high voltage bus and/or the low-voltage bus bar, the DC line carrying signal is the direct current
Signal, wherein the sensibility reciprocal value range of the inductive element is 200uH~25mH.
In this embodiment, inductive element is connected in series in the pressure bus and/or low pressure that direct current is surveyed in drive control circuit
On bus, inductive element is filter inductance, and the clutter in the direct current signal carried on DC line is filtered out by filter inductance.
Optionally, the sensibility reciprocal value range of inductive element is 200uH~25mH.
Optionally, the sensibility reciprocal of inductive element is 500uH.
Optionally, the sensibility reciprocal of inductive element is 5mH.
In one embodiment of the utility model, further, the load of the load includes blower and/or compression
The load of machine or the load includes induction machine and/or permanent magnet synchronous motor.
In one embodiment of the utility model, further, the capacitive element C1Including electrolytic capacitor, and/or
The capacitive element C1It include the capacitor member of multiple series connection and/or parallel connection including a capacity cell and/or the capacitive element
Part.
In one embodiment of the utility model, further, the capacitive element C1Capacitance value range be
10uF~2000uF.
Optionally, capacitive element C1Capacitance be 82uF.
Optionally, capacitive element C1Capacitance be 220uF.
Optionally, capacitive element C1Capacitance be 470uF.
Optionally, capacitive element C1Capacitance be 560uF.
Optionally, capacitive element C1Capacitance be 680uF.
Optionally, capacitive element C1Capacitance be 820uF.
In one embodiment of the utility model, further, the power supply source of the controller M include isolated power supply or
Bootstrap power supply, wherein the bootstrap power supply includes bootstrapping power supply circuit, bootstrap diode D in the inverter2With bootstrapping electricity
Hold C3, the bootstrap diode D2Anode be connected to it is described bootstrapping power supply circuit anode, the bootstrap diode D2Cathode
It is connected to the bootstrap capacitor C3Anode, the bootstrap capacitor C3Anode be connected to the feeder ear of the controller M.
In this embodiment, controller M is provided with power supply, and specifically, power supply includes isolated power supply or bootstrapping
Power supply is connected to the feeder ear of controller M by isolated power supply, provides electricity for controller M when power supply is isolated power supply
Can, when power supply is bootstrap power supply, bootstrap power supply includes concatenated bootstrapping power supply circuit, isolated power supply or bootstrap power supply,
The cathode of bootstrapping power supply circuit is connected with the low-voltage bus bar in two buss lines, the anode and bootstrap diode of power supply circuit of booting
D2Anode be connected, while bootstrap diode D2Cathode and bootstrap capacitor C3Anode be connected, bootstrap capacitor C3Cathode
It is connected to the feeder ear of controller M, to provide electric energy for controller M.
Optionally, it as shown in Fig. 5, Fig. 6, Fig. 7 and Fig. 8, loads as threephase load, switching power supply includes controller M
And power supply, wherein power supply is bootstrap power supply.
Wherein, optionally, as shown in fig. 6, bootstrap diode D2It is set as one.
Wherein, optionally, as shown in fig. 7, bootstrap diode D2It is set as two.
Wherein, optionally, as shown in figure 8, bootstrap diode D2It is set as three.
Multiple bootstrap diode D2The reliability of drive control circuit can be improved.
Optionally, as shown in figs. 5 and 9, it loads as threephase load, switching power supply includes controller M and power supply electricity
Source, wherein power supply is isolated power supply.
Optionally, as shown in Figure 10, Figure 11 and Figure 12, load as single-phase load, switching power supply include controller M and
Power supply, wherein power supply is bootstrap power supply.
Wherein, optionally, as shown in figure 11, bootstrap diode D2It is set as one.
Wherein, optionally, as shown in figure 12, bootstrap diode D2It is set as two.
Two bootstrap diode D2The reliability of drive control circuit can be improved.
Optionally, as depicted in figure 10 and figure 13, it loads as single-phase load, switching power supply includes controller M and power supply
Power supply, wherein power supply is bootstrap power supply.
In one embodiment of the utility model, the drive control circuit 100 of single phase ac load is specifically comprising filtering
Inductance, filter capacitor, rectification circuit, power switch tube, power diode, electrolytic capacitor, single-phase inversion circuit and single phase ac
Load.Single-phase alternating current potential source is converted to DC voltage after filter inductance and filter capacitor filtering, then after rectified circuit；Function
Rate switching tube is in parallel with power diode, the cathode and direct current of the emitter (or source electrode) of power switch tube, power diode
Positive voltage terminal connection, the collector (or drain electrode) of power switch tube, the anode of power diode are connect with electrolytic capacitor anode,
Electrolytic capacitor cathode is connect with DC voltage negative terminal；DC voltage is powered to single-phase inversion circuit, driving single phase ac load.
Preferably, the single-phase inversion circuit can be made of 4 IGBT or be made of 4 MOSFET, have simultaneously
Inverse parallel freewheeling diode.
Preferably, the single phase ac load, can be monophase machine, is also possible to single-phase inductive load.
As shown in figure 14, embodiment according to the present utility model provides a kind of household appliance 300, comprising: load 200；
The drive control circuit 100 as described in above-mentioned any embodiment, the access of drive control circuit 100 is in network system and bears
Between load, the drive control circuit 100 is configured as control network system to 200 power supply of load.
In this embodiment, household appliance includes the drive control circuit 100 as described in above-mentioned any embodiment, because
This, which includes whole beneficial effects of the drive control circuit 100 as described in above-mentioned any embodiment, again not
It repeats again.
In one embodiment of the utility model, further, the household appliance includes air conditioner, refrigerator, wind
At least one of fan, smoke exhaust ventilator, dust catcher and host computer.
In the description of the utility model, term " multiple " then refers to two or more, unless otherwise restricted clearly, art
The orientation or positional relationship of the instructions such as language "upper", "lower" is to be merely for convenience of based on orientation or positional relationship described in attached drawing
Describe the utility model and simplify description, rather than the device or element of indication or suggestion meaning must have a particular orientation,
It is constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention；Term " connection ", " installation ", " Gu
It is fixed " etc. shall be understood in a broad sense, for example, " connection " may be a fixed connection, may be a detachable connection, or integrally connect
It connects；It can be directly connected, it can also be indirectly connected through an intermediary.For the ordinary skill in the art, may be used
To understand the concrete meaning of above-mentioned term in the present invention as the case may be.
Term " one embodiment ", " some embodiments ", " specific embodiment " etc. are retouched in the description of the present invention,
It states and means that particular features, structures, materials, or characteristics described in conjunction with this embodiment or example are contained in the utility model at least
In one embodiment or example.In the present invention, schematic expression of the above terms are not necessarily referring to identical reality
Apply example or example.Moreover, the particular features, structures, materials, or characteristics of description can in any one or more embodiments or
It can be combined in any suitable manner in example.
The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, for this
For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model
Within, any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.
Claims (21)
1. a kind of drive control circuit characterized by comprising
Harmonic filtration module, the power supply signal of access network system input, the harmonic filtration module is configured as filtering out described
Harmonic signal in power supply signal；
Voltage absorption compensation branch, with inverter parallel, the voltage absorption compensation branch includes concatenated capacitive element and opens
Device is closed, the switching device is configured as controlling the capacitive element progress charge or discharge,
Wherein, the capacitive element electric discharge carries out voltage compensation to the inverter, and the inverter is configured as driving load
Operation.
2. drive control circuit according to claim 1, which is characterized in that
Between high voltage bus and low-voltage bus bar, it is female that one end of the switching device is connected to the high pressure for the inverter access
Line, one end of the capacitive element are connected to the low-voltage bus bar.
3. drive control circuit according to claim 1, which is characterized in that further include:
Controller, the controller are connected to the switching device, to regulate and control the on state of the switching device；
Wherein, if the power supply signal is greater than or equal to the first power supply signal threshold value, the controller triggers the derailing switch
Part is connected in the first pattern, is charged with controlling the capacitive element,
In addition, if the controller detects the power supply signal less than the second power supply signal threshold value, the controller triggering
The switching device is connected in a second mode, is discharged with controlling the capacitive element.
4. drive control circuit according to claim 3, which is characterized in that the switching device includes:
Power tube is connected with the capacitive element, and the control terminal of the power tube is connected to the instruction output end of the controller,
Described instruction output end exports control instruction to the control terminal, and the control instruction is configured as controlling the power tube conducting
Or cut-off；
The both ends of reverse-biased freewheeling diode, the reverse-biased freewheeling diode are respectively connected to drain electrode and the source electrode of the power tube,
Wherein, if the power tube be connected, the capacitive element through the power tube to the load discharge, if the power
Pipe cut-off, then the capacitive element charges or is failure to actuate through the reverse-biased freewheeling diode.
5. drive control circuit according to claim 1, which is characterized in that further include:
Rectification module, between the input terminal and the network system of the capacitive element, the rectification module is configured as
The power supply signal is converted into direct current signal,
Wherein, the direct current signal is configured as charging to the capacitive element, and electricity needed for the offer load running
Amount, the inverter are configured as controlling the direct current signal driving load running.
6. drive control circuit according to claim 4, which is characterized in that
If the load includes that single phase ac loads, the inverter includes corresponding single-phase inversion circuit, described single-phase inverse
Power transformation road includes:
Two upper bridge arm power devices and two lower bridge arm power devices are accessed in the output end of the voltage absorption compensation branch
Between the input terminal of the load,
If the load includes that three-phase alternating current loads, the inverter includes corresponding three-phase inverting circuit, three contrary
Power transformation road includes:
Three upper bridge arm power devices and three lower bridge arm power devices are accessed in the output end of the voltage absorption compensation branch
Between the input terminal of the load,
Wherein, the upper bridge arm power device with the lower bridge arm power device of a corresponding phase of a phase are connected phase
It connects, the upper bridge arm power device and the lower bridge arm power device of same phase do not simultaneously turn on.
7. drive control circuit according to claim 6, which is characterized in that
It is connected to a reverse-biased freewheeling diode between the source electrode and drain electrode of any upper bridge arm power device, it is anti-to be denoted as bridge arm
Inclined freewheeling diode,
It is connected to a reverse-biased freewheeling diode between the source electrode and drain electrode of any lower bridge arm power device, it is anti-to be denoted as lower bridge arm
Inclined freewheeling diode.
8. drive control circuit according to claim 6, which is characterized in that
Any upper bridge arm power device includes that Metal Oxide Semiconductor Field Effect Transistor and/or insulated gate bipolar are brilliant
Body pipe,
Any lower bridge arm power device includes that Metal Oxide Semiconductor Field Effect Transistor and/or insulated gate bipolar are brilliant
Body pipe,
Wherein, the collector of the insulated gate bipolar transistor is connected as the drain electrode, the insulated gate bipolar crystal
The emitter of pipe is connected as the source electrode.
9. drive control circuit according to claim 6, which is characterized in that
The power tube includes Metal Oxide Semiconductor Field Effect Transistor and/or insulated gate bipolar transistor,
Wherein, the grid of the Metal Oxide Semiconductor Field Effect Transistor is connected to the controller as the control terminal
Instruction output end, the base stage of the insulated gate bipolar transistor is connected to the instruction of the controller as the control terminal
Output end.
10. drive control circuit according to any one of claim 1 to 9, which is characterized in that
The harmonic filtration module includes the second capacitive element, and second capacitive element is connected across in the drive control circuit
Two alternating current circuits, alternating current circuit carrying signal is the power supply signal.
11. drive control circuit according to claim 10, which is characterized in that
Second capacitive element includes that a capacity cell and/or second capacitive element include multiple series connection and/or simultaneously
The capacity cell of connection,
Wherein, the capacity value range of second capacitive element is 1uF~100uF.
12. drive control circuit according to any one of claim 1 to 9, which is characterized in that
The harmonic filtration module further includes inductive element, and the inductive element is serially connected in the drive control circuit at least
One alternating current circuit, the alternating current circuit carrying signal is the power supply signal,
Wherein, the sensibility reciprocal value range of the inductive element is 200uH~25mH.
13. drive control circuit according to claim 2, which is characterized in that
The harmonic filtration module further includes inductive element, and the inductive element is serially connected with the high voltage bus and/or described low
Bus is pressed, it is direct current signal that DC line, which carries signal,
Wherein, the sensibility reciprocal value range of the inductive element is 200uH~25mH.
14. drive control circuit according to any one of claim 1 to 9, which is characterized in that
The load of the load includes blower and/or compressor,
Or the load of the load includes induction machine and/or permanent magnet synchronous motor.
15. drive control circuit according to any one of claim 1 to 9, which is characterized in that
The capacitive element includes electrolytic capacitor and/or the capacitive element includes a capacity cell and/or the capacitive
Element includes the capacity cell of multiple series connection and/or parallel connection.
16. drive control circuit according to any one of claim 1 to 9, which is characterized in that
The capacitance value range of the capacitive element is 10uF~2000uF.
17. the drive control circuit according to any one of claim 3 or 4,6 to 9, which is characterized in that
The power supply source of the controller includes isolated power supply or bootstrap power supply,
Wherein, the bootstrap power supply includes bootstrapping power supply circuit, bootstrap diode and the bootstrap capacitor in the inverter, described
The anode of bootstrap diode is connected to the anode of the bootstrapping power supply circuit, the cathode of the bootstrap diode be connected to it is described from
The anode of capacitor is lifted, the anode of the bootstrap capacitor is connected to the feeder ear of the controller.
18. drive control circuit according to any one of claim 1 to 9, which is characterized in that the voltage absorption compensation
Branch further include:
With the concatenated resistive element of the capacitive element and/or inductance element, the resistive element flows through the appearance for adjusting
Property element size of current, the inductance element is for filtering out the AC noise for flowing through the capacitive element.
19. drive control circuit according to claim 18, which is characterized in that
The value range of the resistive element is the Ω of 0.1m Ω~10, and the value range of the inductance element is 1uH~10mH.
20. a kind of household appliance characterized by comprising
Load；
Drive control circuit as described in any one of claims 1 to 19, the drive control circuit access is in network system
Between load, the drive control circuit is configured as control network system to the load supplying.
21. household appliance according to claim 20, which is characterized in that
The household appliance includes at least one of air conditioner, refrigerator, fan, smoke exhaust ventilator, dust catcher and host computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920488338.4U CN209497401U (en) | 2019-04-11 | 2019-04-11 | Drive control circuit and household appliance |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920488338.4U CN209497401U (en) | 2019-04-11 | 2019-04-11 | Drive control circuit and household appliance |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109889072A (en) * | 2019-04-11 | 2019-06-14 | 广东美的制冷设备有限公司 | Drive control circuit and household appliance |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109889072A (en) * | 2019-04-11 | 2019-06-14 | 广东美的制冷设备有限公司 | Drive control circuit and household appliance |
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