CN109842315A - Drive control circuit and household appliance - Google Patents
Drive control circuit and household appliance Download PDFInfo
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- CN109842315A CN109842315A CN201910291295.5A CN201910291295A CN109842315A CN 109842315 A CN109842315 A CN 109842315A CN 201910291295 A CN201910291295 A CN 201910291295A CN 109842315 A CN109842315 A CN 109842315A
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Abstract
The present invention provides a kind of drive control circuit and household appliances, wherein, drive control circuit includes: first voltage compensation branch, between the network system and the inverter, the first voltage compensation branch includes concatenated first capacitive element and first switch device, and the first switch device is configured as controlling the first capacitive element progress charge or discharge；Second voltage compensates branch, compensates branch circuit parallel connection with the first voltage, the second voltage compensation branch includes concatenated second capacitive element and second switch device, and the second switch device is configured as controlling the second capacitive element progress charge or discharge；Wherein, the first capacitive element electric discharge carries out voltage compensation to the inverter, and the first switch device replaces open-minded with the second switch device.Technical solution provided by the invention solves the caused beat frequency noise problem when the power supply signal of input is too low.
Description
Technical field
The present invention relates to Drive Control Technique fields, set in particular to a kind of drive control circuit and a kind of household electrical appliances
It is standby.
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.
Summary of the invention
The present invention is directed to solve at least one of the technical problems existing in the prior art or related technologies.
For this purpose, the first aspect of the present invention proposes a kind of drive control circuit.
The second aspect of the present invention proposes a kind of household appliance.
In view of this, the first aspect of the present invention provides a kind of drive control circuit, the drive control circuit is received
The power supply signal of network system input, inverter is equipped in the drive control circuit, the inverter is configured as will be described
Power supply signal is converted to the driving signal of load, and the drive control circuit includes: first voltage compensation branch, is set to the electricity
Between net system and the inverter, concatenated first capacitive element and first switch device, the first switch device are matched
It is set to control first capacitive element and carries out charge or discharge；Second voltage compensates branch, compensates branch with the first voltage
Road is in parallel, and the second voltage compensation branch includes concatenated second capacitive element and second switch device, the second switch
Device is configured as controlling the second capacitive element progress charge or discharge；Wherein, the first capacitive element electric discharge is to institute
It states inverter and carries out voltage compensation, the first switch device replaces open-minded with the second switch device.
In the technical scheme, drive control circuit is provided with first voltage compensation circuit and second voltage parallel with one another
Compensation circuit.First voltage compensation circuit and second voltage compensation circuit are set between network system and inverter, the first electricity
Pressure compensation circuit includes the first capacitive element and first switch device being serially connected, and second voltage compensation circuit includes mutually going here and there
The second capacitive element and second switch device of connection.First switch device and second switch device control the first capacitive element and second
Capacitive element is charged or is discharged, and carries out electricity to inverter when the first capacitive element and the second capacitive element discharge
Pressure compensation.
Technical solution provided by the invention is applied, when supply voltage is normal, the cut-off of first switch device, control first
Capacitive element charging, meanwhile, second switch break-over of device, the second capacitive element can filter out the harmonic signal in direct current signal,
The problems such as overcoming system power fluctuation and beat frequency noise, when supply voltage is too low, first switch break-over of device, control first
Capacitive element charging, meanwhile, second switch device cut-off, the charging current of the first capacitive element is not passed through the second capacitive element,
The excessive situation generation of the charging current of the second capacitive element (usually thin-film capacitor) is avoided, driving is further improved
The reliability of control circuit.
Specifically, the electrolysis electricity that capacitance range is 10uF to 2000uF can be used in the first capacitive element and the second capacitive element
Hold, the capacitor bigger without selection capacitance is, it can be achieved that preferable cost control, controller is according to collected power supply signal value
Size drives first switch tube or second switch changes switching mode, simultaneous to control corresponding electrolytic capacitor charge or discharge
Have the two aspect effects for reducing load current peak and voltage compensation.
In addition, the drive control circuit in above-mentioned technical proposal provided by the invention can also have following supplementary technology special
Sign:
In the above-mentioned technical solutions, further, the second switch device be resistance element or power switch tube, it is described
The Standard resistance range of resistance element is 0.1 ohm~1000 ohm, and the power bracket of the resistance element is 0.1W~100W.
In the technical scheme, second switch device may be configured as resistance element or power switch tube.Optionally, when second
When switching device is resistance element, Standard resistance range is 0.1 ohm~1000 ohm, and device power bracket is 0.1W~100W.
In any of the above-described technical solution, further, drive control circuit further include: controller, the controller connect
It is connected to the first switch device, to regulate and control the on state of the first switch device；Wherein, if the power supply signal is greater than
Or being equal to the first power supply signal threshold value, then the controller triggers the first switch device and is connected in the first pattern, with control
First capacitive element charges, in addition, if the controller detects the power supply signal less than the second power supply signal
Threshold value, then the controller triggers the first switch device and is connected in a second mode, with control first capacitive element into
Row electric discharge.
In the technical scheme, in the technical scheme, controller controls first switch device according to the size of power supply signal
The conduction mode of part.Specifically, when ac voltage signal is more than first voltage threshold value, illustrate that alternating voltage is higher, this time control
Device control first switch device processed is connected in the first pattern, to reduce load current amplitude for the charging of the first capacitive element；Work as friendship
When flowing voltage signal less than second voltage threshold value, illustrate that alternating voltage is too low at this time, controller controls first switch device at this time
It is connected in a second mode, so that the first capacitive element discharges, power compensation is carried out to inverter.
In any of the above-described technical solution, further, the switching device includes: power tube, with first 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 described
Control terminal exports control instruction, and the control instruction is configured as controlling the power tube on or off；Reverse-biased two pole of afterflow
Pipe, the both ends of the reverse-biased freewheeling diode are respectively connected to drain electrode and the source electrode of the power tube, wherein if the power tube
Conducting, then first capacitive element through the power tube to the load discharge, if the power tube ends, described first
Capacitive element charges or is failure to actuate through the reverse-biased freewheeling diode.
In the technical scheme, switching device includes power tube and reverse-biased freewheeling diode, and power tube and the first capacitive are first
Part series connection, the instruction output end of controller are connected to the control terminal of power tube, to send control instruction, power tube root to power tube
According to control 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
Pole is connected, and when power tube conducting, the first capacitive element works as power to load discharge through power tube to realize voltage compensation
When pipe ends, the voltage signal of input is the charging of the first capacitive element through reverse-biased freewheeling diode, to reduce load current peak.
Load current peak be normal water usually, without reducing load current peak, the first capacitive element is failure to actuate.
Wherein, first capacitive element refers to that power supply signal is through reverse-biased afterflow through the reverse-biased freewheeling diode charging
The first capacitive element of diode pair charges, meanwhile, power supply signal is powered the load of operation, and the first capacitive element fills
Electric process is complete charging process, i.e. when the first capacitive element discharges, the discharge voltage of the first capacitive element is greater than on route
Supply voltage, and then realize voltage 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 described the
Between the input terminal of one capacitive element and the network system, 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 first capacitive element, and provides the load running
Required electricity, the inverter are configured as controlling the direct current signal driving load running.
In the technical scheme, rectification module is provided in drive control circuit, rectification module is connected to the first capacitive member
Between the input terminal and filter module of part, the power supply signal of network system input enters rectification mould after filter module filters out noise
Block, rectification module rectify power supply signal, and by the DC signal output obtained after rectification to the first capacitive element and bear
Part is carried, to charge to the first capacitive element, and provides operation required electricity to load.Inverter converts direct current signal to
AC signal, control 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 load of the load includes blower and/or compressor.
In any of the above-described technical solution, further, the load of the 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 the technical scheme, capacitive element use single electrolytic capacitor, also can be used it is multiple series connection and/or parallel connection
Electrolytic capacitor, to realize being freely arranged to the equivalent capacitance of capacitive element.
In any of the above-described technical solution, further, the capacitance value range of first capacitive element be 10uF~
2000uF。
Optionally, the capacitance of the first capacitive element is 82uF.
Optionally, the capacitance of the first capacitive element is 220uF.
Optionally, the capacitance of the first capacitive element is 470uF.
Optionally, the capacitance of the first capacitive element is 560uF.
Optionally, the capacitance of the first capacitive element is 680uF.
Optionally, the capacitance of the first 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 first voltage absorption compensation branch further include: with described
The concatenated resistive element of one capacitive element and/or inductance element, the resistive element flow through the first capacitive member for adjusting
The size of current of part, the inductance element is for filtering out the AC noise for flowing through first capacitive element.
In the technical scheme, resistive element and/or inductance element can access between high voltage bus and switching device,
Can also access between the first capacitive element and low-voltage bus bar, can also access in switching device and the first capacitive element it
Between.
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 present invention provides a kind of household appliance, comprising: load；As described in any of the above-described technical solution
Drive control circuit, between network system and load, the drive control circuit is matched for drive control circuit access
Control network system is set 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
Above-mentioned and/or additional aspect of the invention and advantage will become from the description of the embodiment in conjunction with the following figures
Obviously and it is readily appreciated that, in which:
Fig. 1 shows the schematic diagram of drive control circuit according to an embodiment of the invention；
Fig. 2 shows the schematic diagrames of drive control circuit according to another embodiment of the invention；
Fig. 3 shows the schematic diagram of drive control circuit according to still another embodiment of the invention；
Fig. 4 shows the schematic diagram of the drive control circuit of still another embodiment in accordance with the present invention；
Fig. 5 shows the schematic diagram of the drive control circuit of still another embodiment in accordance with the present invention；
Fig. 6 shows the schematic diagram of the drive control circuit of still another embodiment in accordance with the present invention；
Fig. 7 shows the schematic diagram of the drive control circuit of still another embodiment in accordance with the present invention；
Fig. 8 shows the schematic diagram of the drive control circuit of still another embodiment in accordance with the present invention；
Fig. 9 shows the schematic diagram of the drive control circuit of still another embodiment in accordance with the present invention；
Figure 10 shows the schematic diagram of the drive control circuit of still another embodiment in accordance with the present invention；
Figure 11 shows the schematic diagram of the drive control circuit of still another embodiment in accordance with the present invention；
Figure 12 shows the schematic diagram of the drive control circuit of still another embodiment in accordance with the present invention；
Figure 13 shows the schematic diagram of the drive control circuit of still another embodiment in accordance with the present invention；
Figure 14 shows the block diagram of household appliance according to an embodiment of the invention.
Specific embodiment
To better understand the objects, features and advantages of the present invention, with reference to the accompanying drawing and specific real
Applying mode, the present invention is further described in detail.It should be noted that in the absence of conflict, the implementation of the application
Feature in example and embodiment can be combined with each other.
In the following description, numerous specific details are set forth in order to facilitate a full understanding of the present invention, still, the present invention may be used also
To be implemented using other than the one described here other modes, therefore, protection scope of the present invention is not by described below
Specific embodiment limitation.
The drive control circuit described according to some embodiments of the invention and household appliance are described referring to Fig. 1 to Figure 14.
As depicted in figs. 1 and 2, in the embodiment of first aspect present invention, a kind of drive control circuit 100 is provided,
The drive control circuit 100 receives the power supply signal of network system input, is equipped with inversion in the drive control circuit 100
Device, the inverter are configured as being converted to the power supply signal into the driving signal of load, and the drive control circuit 100 is wrapped
Include: first voltage compensates branch, is set between the network system and the inverter, concatenated first capacitive element C1With
One switching device, the first switch device are configured as controlling the first capacitive element C1Carry out charge or discharge；Second
Voltage compensation branch compensates branch circuit parallel connection with the first voltage, and the second voltage compensation branch includes concatenated second appearance
Property element C2With second switch device, the second switch device is configured as controlling the second capacitive element C2It charges
Or electric discharge；Wherein, the first capacitive element C1Electric discharge to the inverter carry out voltage compensation, the first switch device with
The second switch device alternating is open-minded.
In this embodiment, drive control circuit 100 is provided with first voltage compensation circuit and the second electricity parallel with one another
Press compensation circuit.First voltage compensation circuit and second voltage compensation circuit are set between network system and inverter, and first
Voltage compensating circuit includes the first capacitive element C being serially connected1With first switch device, second voltage compensation circuit includes phase
Mutual concatenated second capacitive element C2With second switch device.First switch device and second switch device control the first capacitive element
C1With the second capacitive element C2It is charged or is discharged, in the first capacitive element C1With the second capacitive element C2When electric discharge
Voltage compensation is carried out to inverter.
In the above embodiment of the invention, when supply voltage is normal, the cut-off of first switch device controls the first capacitive
Element C1Charging, meanwhile, second switch break-over of device, the second capacitive element C2The harmonic signal in direct current signal can be filtered out, gram
The problems such as having taken system power fluctuation and beat frequency noise, when supply voltage is too low, first switch break-over of device, control first is held
Property element C1Charging, meanwhile, the cut-off of second switch device, the first capacitive element C1Charging current be not passed through the second capacitive element
C2, avoid the second capacitive element C2The excessive situation of (usually thin-film capacitor) charging current occurs, and further improves drive
The reliability of dynamic control circuit.
Specifically, the first capacitive element C1With the second capacitive element C2It is the electricity of 10uF to 2000uF that capacitance range, which can be used,
Capacitor is solved, the capacitor bigger without selection capacitance is, it can be achieved that preferable cost control, controller M is according to collected power supply
Signal value size drives first switch tube or second switch to change switching mode, to control corresponding electrolytic capacitor charging or put
Electricity has had both the two aspect effects for reducing load current peak and voltage compensation.
In addition, the drive control circuit 100 in above-mentioned technical proposal provided by the invention can also have additional skill as follows
Art feature:
In one embodiment of the invention, as depicted in figs. 1 and 2, further, the second switch device is resistive
Element R or power switch Q1, the Standard resistance range of the resistance element R is 0.1 ohm~1000 ohm, the resistance element R's
Power bracket is 0.1W~100W.
In this embodiment, second switch device may be configured as resistance element R or power switch Q1.Optionally, when second
When switching device is resistance element R, Standard resistance range is 0.1 ohm~1000 ohm, and device power bracket is 0.1W~100W.
Optionally, as shown in Figure 1, second switch device is power switch Q1。
Optionally, as shown in Fig. 2, second switch device is resistance element R.
In one embodiment of the invention, further, as shown in Fig. 3, Fig. 4, Fig. 5, Fig. 6 and Fig. 7, drive control electricity
Road 100 further include: controller M, the controller M are connected to the first switch device, to regulate and control the first switch device
On state；Wherein, if the power supply signal is greater than or equal to the first power supply signal threshold value, the controller M triggers institute
It states first switch device to be connected in the first pattern, to control the first capacitive element C1It charges, in addition, if the control
Device M detect the power supply signal less than the second power supply signal threshold value, then the controller M trigger the first switch device with
Second mode conducting, to control the first capacitive element C1It discharges.
In this embodiment, in this embodiment, controller M controls first switch device according to the size of power supply signal
Conduction mode.Specifically, when ac voltage signal is more than first voltage threshold value, illustrate that alternating voltage is higher, at this time controller M
Control first switch device is connected in the first pattern, for the first capacitive element C1Charging reduces load current amplitude；Work as exchange
Voltage signal be less than second voltage threshold value when, illustrate that alternating voltage is too low at this time, at this time controller M control first switch device with
Second mode conducting, so that the first capacitive element C1Electric discharge carries out power compensation to inverter.
In one embodiment of the invention, further, as shown in Figure 1, Figure 2 and Figure 3, the switching device includes:
Power tube Q2, with the first capacitive element C1Series connection, the power tube Q2Control terminal be connected to the instruction of the controller M
Output end, described instruction output end export control instruction to the control terminal, and the control instruction is configured as controlling the function
Rate pipe Q2On or off；Reverse-biased sustained diode1, the reverse-biased sustained diode1Both ends be respectively connected to the power
Pipe Q2Drain electrode and source electrode, wherein if the power tube Q2It is connected, then the first capacitive element C1Through the power tube Q2To
The load discharge, if the power tube Q2End, then the first capacitive element C1Through the reverse-biased sustained diode1Charging
Or it is failure to actuate.
In this embodiment, switching device includes power tube Q2With reverse-biased sustained diode1, power tube Q2With the first capacitive
Element C1Series connection, the instruction output end of controller M are connected to power tube Q2Control terminal, with to power tube Q2Control instruction is sent,
Power tube Q2Change on state (on or off) according to control instruction, reverse-biased sustained diode1Both ends respectively with power
Pipe Q2Drain electrode be connected with source electrode, as power tube Q2When conducting, the first capacitive element C1Through power tube Q2To load discharge, with
Voltage compensation is realized, as power tube Q2When cut-off, the voltage signal of input is through reverse-biased sustained diode1For the first capacitive element C1
Charging, to reduce load current peak.Load current peak be normal water usually, without reducing load current peak, first
Capacitive element C1It is failure to actuate.
Wherein, the first capacitive element C1Through the reverse-biased sustained diode1Charging refers to that power supply signal is through reverse-biased continuous
Flow diode D1To the first capacitive element C1It charges, meanwhile, power supply signal is powered the load of operation, the first capacitive
Element C1Charging process is complete charging process, i.e. the first capacitive element C1When electric discharge, the first capacitive element C1Discharge voltage
Greater than the supply voltage on route, and then realize voltage compensation.
Specifically, power tube Q2Can it is preferable to use IGBT (Insulated Gate Bipolar Transistor, absolutely
Edge grid bipolar junction transistor) type power tube Q2, 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 invention, further, as shown in Figure 1, Figure 2 and Figure 3, drive control circuit 100 is gone back
Include: rectification module, is set to the first capacitive element C1Input terminal and the network system between, the rectification module quilt
It is configured to the power supply signal being converted to direct current signal, wherein the direct current signal is configured as to the first capacitive member
Part C1Electricity needed for charging, and the offer load running, the inverter are configured as controlling the direct current signal drive
Move the load running.
In this embodiment, rectification module is provided in drive control circuit 100, rectification module is connected to the first capacitive member
Part C1Input terminal and filter module between, network system input power supply signal after filter module filters out noise enter rectification
Module, rectification module rectify power supply signal, and by the DC signal output obtained after rectification to the first capacitive element C1
And loading section, with to the first capacitive element C1Charging, and provide operation required electricity to load.Inverter is by direct current signal
It is converted into AC signal, control driving load running.
In one embodiment of the invention, further, shown in as shown in Figure 1, Figure 2, Fig. 3, Fig. 8, Fig. 9 and Figure 10, if institute
Stating load includes that single phase ac loads, then the inverter includes corresponding single-phase inversion circuit, the single-phase inversion circuit packet
Include: 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
Inverter circuit, the three-phase inverting circuit include: three upper bridge arm power devices and three lower bridge arm power devices, are accessed in institute
It states between the output end of voltage absorption compensation branch and the input terminal of the load, wherein the upper bridge arm function of a phase
Rate device connects with the series connection of the lower bridge arm power device of a corresponding phase, the upper bridge arm power device of same phase
It is not simultaneously turned on the lower bridge arm power device.
Optionally, as shown in Fig. 2, load includes that three-phase alternating current loads, second switch device is resistance element R.
Optionally, as shown in figure 8, load includes that single phase ac loads, second switch device is power switch Q1。
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
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 one embodiment of the invention, further, the source electrode and drain electrode of any upper bridge arm power device it
Between be connected to a reverse-biased freewheeling diode, be denoted as the reverse-biased freewheeling diode of bridge arm, the source of any lower bridge arm power device
It is connected to a reverse-biased freewheeling diode between pole and drain electrode, is denoted as 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 invention, further, as shown in Figure 4, Figure 5, Figure 6 and Figure 7, any upper bridge arm
Power device includes Metal Oxide 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 described exhausted
The collector of edge grid bipolar junction transistor is connected as the drain electrode, and the emitter of the insulated gate bipolar transistor is as institute
State source electrode connection.
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 invention, further, the power tube Q2Including metal oxide semiconductcor field effect
Answer transistor and/or insulated gate bipolar transistor, wherein the grid of the Metal Oxide Semiconductor Field Effect Transistor is made
The instruction output end of the controller M is connected to for the control terminal, the base stage of the insulated gate bipolar transistor is as institute
State the instruction output end that control terminal is connected to the controller M.
In this embodiment, power tube Q2Including 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 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 invention, further, the load of the load includes blower and/or compressor.
In one embodiment of the invention, further, the load of the load includes that induction machine and/or permanent magnetism are same
Walk motor.
In one embodiment of the invention, further, the capacitive element includes electrolytic capacitor and/or the appearance
Property element include capacity cell that a capacity cell and/or the capacitive element include multiple series connection and/or parallel connection.
In this embodiment, capacitive element uses single electrolytic capacitor, and the electricity of multiple series connection and/or parallel connection also can be used
Capacitor is solved, to realize being freely arranged to the equivalent capacitance of capacitive element.
In one embodiment of the invention, further, the first capacitive element C1Capacitance value range be
10uF~2000uF.
Optionally, the first capacitive element C1Capacitance is 82uF.
Optionally, the first capacitive element C1Capacitance be 220uF.
Optionally, the first capacitive element C1Capacitance be 470uF.
Optionally, the first capacitive element C1Capacitance be 560uF.
Optionally, the first capacitive element C1Capacitance be 680uF.
Optionally, the first capacitive element C1Capacitance be 820uF.
In one embodiment of the invention, further, such as Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Figure 10, Figure 11, Figure 12
With shown in Figure 13, the power supply source of the controller M includes isolated power supply or bootstrap power supply, wherein the bootstrap power supply includes institute
State bootstrapping power supply circuit DC, the bootstrap diode D in inverter2With bootstrap capacitor C3, the bootstrap diode D2Anode connection
To the anode of the bootstrapping power supply circuit DC, the bootstrap diode D2Cathode be connected to the bootstrap capacitor C3Anode, institute
State 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 DC, isolated power supply or bootstrapping electricity
Source, bootstrapping power supply circuit DC cathode be connected with the low-voltage bus bar in two buss lines, bootstrapping power supply circuit DC anode with from
Lift diode D2Anode be connected, while bootstrap diode D2Cathode and bootstrap capacitor C3Anode be connected, bootstrap capacitor
C3Cathode be connected to the feeder ear of controller M, to provide electric energy for controller M.
Optionally, as shown in Fig. 3, Fig. 4, Fig. 5 and Fig. 6, load includes threephase load, and power supply is bootstrap power supply.
Wherein, optionally, as shown in figure 4, bootstrap diode D2It is set as one.
Wherein, optionally, as shown in figure 5, bootstrap diode D2It is set as two.
Wherein, optionally, as shown in fig. 6, bootstrap diode D2It is set as three.
Optionally, as shown in Figure 3 and Figure 7, load includes threephase load, and power supply is isolated power supply.
Optionally, as shown in Figure 10, Figure 11 and Figure 12, load includes single-phase load, and 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.
Optionally, as depicted in figure 10 and figure 13, load includes single-phase load, and power supply is isolated power supply.
In one embodiment of the invention, drive control circuit 100 includes rectification circuit, filter inductance, the first power
Switching tube, power diode, electrolytic capacitor, filter capacitor and the second power switch tube.The rectified circuit of single phase power supply signal source
Afterwards, direct current signal is converted to through filter inductance again.First power switch tube is in parallel with power diode, the first power switch tube
Emitter (or source electrode), power diode cathode connect with direct current signal anode, the collector of the first power switch tube (or
Person drain electrode), power diode anode connect with electrolytic capacitor anode, electrolytic capacitor cathode is connect with direct current signal negative terminal.Filter
Wave capacitor one end is connect with direct current signal anode, the collector (or drain electrode) of the filter capacitor other end and the second power switch tube
Connection, the emitter (or source electrode) of the second power switch tube are connect with direct current signal negative terminal.
Optionally, the rectification circuit can be integrated rectifier bridge stack.
Optionally, the rectification circuit can be the rectification circuit of four discrete diodes composition.
Optionally, the power switch tube can be IGBT, can also be MOSFET.The power diode can be solely
Vertical diode is also possible to the reversed freewheeling diode integrated with IGBT or MOSFET.
In one embodiment of the invention, further, it loads as three-phase alternating current load, the packet of drive control circuit 100
Include rectification circuit, filter inductance, the first power switch tube, power diode, electrolytic capacitor, filter capacitor, the second power switch
Pipe, three-phase inverting circuit and three-phase alternating current load.It is converted to directly after the rectified circuit of single phase power supply signal source, again through filter inductance
Signal is flowed, the first power switch tube is in parallel with power diode, emitter (or source electrode), the power two of the first power switch tube
The cathode of pole pipe is connect with direct current signal anode, and the collector of the first power switch tube (or drain electrode), power diode are just
Pole is connect with electrolytic capacitor anode, and electrolytic capacitor cathode is connect with direct current signal negative terminal, and filter capacitor one end and direct current signal are just
End connection, the filter capacitor other end are connect with the collector (or drain electrode) of the second power switch tube, the second power switch tube
Emitter (or source electrode) is connect with direct current signal negative terminal, and direct current signal is powered to three-phase inverting circuit, and driving three-phase alternating current is negative
It carries.
Optionally, the three-phase inverting circuit can be made of 6 IGBT or be formed or used by 6 MOSFET
Intelligent power module, while there is inverse parallel freewheeling diode.
Optionally, the three-phase alternating current load, can be induction machine, is also possible to permanent magnet synchronous motor.
In one embodiment of the invention, further, it loads as single phase ac load, the packet of drive control circuit 100
Include rectification circuit, filter inductance, the first power switch tube, power diode, electrolytic capacitor, filter capacitor, the second power switch
Pipe, single-phase inversion circuit and single phase ac load.It is converted to directly after the rectified circuit of single phase power supply signal source, again through filter inductance
Signal is flowed, the first power switch tube is in parallel with power diode, emitter (or source electrode), the power two of the first power switch tube
The cathode of pole pipe is connect with direct current signal anode, and the collector of the first power switch tube (or drain electrode), power diode are just
Pole is connect with electrolytic capacitor anode, and electrolytic capacitor cathode is connect with direct current signal negative terminal, and filter capacitor one end and direct current signal are just
End connection, the filter capacitor other end are connect with the collector (or drain electrode) of the second power switch tube, the second power switch tube
Emitter (or source electrode) is connect with direct current signal negative terminal, and direct current signal is powered to single-phase inversion circuit, and driving single phase ac is negative
It carries.
Optionally, the single-phase inversion circuit can be made of 4 IGBT or be made of 4 MOSFET, have simultaneously
Inverse parallel freewheeling diode.
Optionally, the single phase ac load, can be monophase machine, is also possible to single-phase inductive load.
As shown in Figure 1, Figure 2, shown in Fig. 8 and Fig. 9, in any of the above-described technical solution, further, the first voltage absorbs
Compensate branch further include: with the first capacitive element C1Concatenated resistive element and/or inductance component L0, the resistive element
The first capacitive element C is flowed through for adjusting1Size of current, the inductance component L0First appearance is flowed through for filtering out
Property 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 the first capacitive element C1Between low-voltage bus bar, it can also access in switching device and the first capacitive member
Part 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.
As shown in figure 14, in the embodiment of second aspect of the present invention, a kind of household appliance 300 is provided, 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
Between load, the drive control circuit 100 is configured as control network system to 200 power supply of load.
In this embodiment, household appliance 300 includes the drive control circuit 100 as described in above-mentioned any embodiment,
Therefore, which includes whole beneficial effects of the drive control circuit 100 as described in above-mentioned any embodiment, again
It repeats no more.
In one embodiment of the invention, further, the household appliance 300 includes air conditioner, refrigerator, wind
At least one of fan, smoke exhaust ventilator, dust catcher and host computer.
In description of the invention, term " multiple " then refers to two or more, unless otherwise restricted clearly, term
The orientation or positional relationship of the instructions such as "upper", "lower" is to be merely for convenience of retouching based on orientation or positional relationship described in attached drawing
It states the present invention and simplifies description, rather than the device or element of indication or suggestion meaning must have a particular orientation, with specific
Orientation construction and operation, therefore be not considered as limiting the invention；Term " connection ", " installation ", " fixation " etc. should all
It is interpreted broadly, for example, " connection " may be fixed connection or may be dismantle connection, or integral connection；It can be straight
Connect it is connected, can also be indirectly connected through an intermediary.It for the ordinary skill in the art, can be according to specific feelings
Condition understands the concrete meaning of above-mentioned term in the present invention.
In the description of the present invention, the description meaning of term " one embodiment ", " some embodiments ", " specific embodiment " etc.
Refer to that particular features, structures, materials, or characteristics described in conjunction with this embodiment or example are contained at least one implementation of the invention
In example or example.In the present invention, schematic expression of the above terms are not necessarily referring to identical embodiment or example.And
And the particular features, structures, materials, or characteristics of description can be in any one or more of the embodiments or examples with suitable
Mode combines.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (18)
1. a kind of drive control circuit, the drive control circuit receives the power supply signal of network system input, the driving control
Inverter is equipped in circuit processed, the inverter is configured as being converted to the power supply signal into the driving signal of load, special
Sign is that the drive control circuit includes:
First voltage compensates branch, is set between the network system and the inverter, and the first voltage compensates branch packet
Concatenated first capacitive element and first switch device are included, the first switch device is configured as controlling the first capacitive member
Part carries out charge or discharge；
Second voltage compensates branch, compensates branch circuit parallel connection with the first voltage, the second voltage compensation branch includes series connection
The second capacitive element and second switch device, the second switch device is configured as controlling second capacitive element and carries out
Charge or discharge；
Wherein, first capacitive element electric discharge carries out voltage compensation to the inverter, the first switch device with it is described
Second switch device alternating is open-minded.
2. drive control circuit according to claim 1, which is characterized in that
The second switch device is resistance element or power switch tube, the Standard resistance range of the resistance element is 0.1 ohm~
1000 ohm, the power bracket of the resistance element is 0.1W~100W.
3. drive control circuit according to claim 1, which is characterized in that
Between high voltage bus and low-voltage bus bar, one end of the first switch device is connected to the height for the inverter access
Bus is pressed, one end of first capacitive element is connected to the low-voltage bus bar.
4. drive control circuit according to claim 1, which is characterized in that
Controller, the controller are connected to the first switch device, to regulate and control the on state of the first switch device；
Wherein, if the power supply signal is greater than or equal to the first power supply signal threshold value, the controller triggering described first is opened
It closes device to be connected in the first pattern, be charged with controlling first 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 first switch device is connected in a second mode, is discharged with controlling first capacitive element.
5. drive control circuit according to claim 4, which is characterized in that the switching device includes:
Power tube is connected with first capacitive element, and the instruction that the control terminal of the power tube is connected to the controller is defeated
Outlet, described instruction output end export control instruction to the control terminal, and the control instruction is configured as controlling the power
Pipe on or 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, first capacitive element through the power tube to the load discharge, if described
Power tube cut-off, then first capacitive element charges or is failure to actuate through the reverse-biased freewheeling diode.
6. 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 first capacitive element, 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 charging to first 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.
7. drive control circuit according to claim 1, 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.
8. drive control circuit according to claim 7, 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.
9. drive control circuit according to claim 7, 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.
10. drive control circuit according to claim 5, 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.
11. drive control circuit according to any one of claim 1 to 10, 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.
12. drive control circuit according to any one of claim 1 to 10, which is characterized in that
First capacitive element includes electrolytic capacitor and/or first capacitive element includes a capacity cell, and/or
First capacitive element includes the capacity cell of multiple series connection and/or parallel connection.
13. drive control circuit according to any one of claim 1 to 10, which is characterized in that
The capacitance value range of first capacitive element is 10uF~2000uF.
14. drive control circuit according to any one of claim 1 to 10, 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.
15. drive control circuit according to claims 1 to 10, which is characterized in that the first voltage absorption compensation branch
Road further include:
With the concatenated resistive element of first capacitive element and/or inductance element, the resistive element flows through institute for adjusting
The size of current of the first capacitive element is stated, the inductance element is for filtering out the AC noise for flowing through first capacitive element.
16. drive control circuit according to claims 1 to 10, 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.
17. a kind of household appliance characterized by comprising
Load；
Drive control circuit as described in any one of claims 1 to 16, 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.
18. household appliance according to claim 17, 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.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910291295.5A CN109842315B (en) | 2019-04-11 | 2019-04-11 | Drive control circuit and household electrical appliance |
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|---|---|---|---|
| CN201910291295.5A CN109842315B (en) | 2019-04-11 | 2019-04-11 | Drive control circuit and household electrical appliance |
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| CN109842315B CN109842315B (en) | 2020-11-13 |
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