CN105322769A - Grid driving device and inverter having the same - Google Patents

Grid driving device and inverter having the same Download PDF

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Publication number
CN105322769A
CN105322769A CN201510084515.9A CN201510084515A CN105322769A CN 105322769 A CN105322769 A CN 105322769A CN 201510084515 A CN201510084515 A CN 201510084515A CN 105322769 A CN105322769 A CN 105322769A
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CN
China
Prior art keywords
gate drivers
electric power
described multiple
side switch
inverter
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CN201510084515.9A
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Chinese (zh)
Inventor
李俊镐
赵原震
朴珉圭
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Samsung Electro Mechanics Co Ltd
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Samsung Electro Mechanics Co Ltd
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Publication of CN105322769A publication Critical patent/CN105322769A/en
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
    • H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
    • H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Power Conversion In General (AREA)
  • Inverter Devices (AREA)

Abstract

Provided are a grid driving device and an inverter having the same. The inverter includes: an inverter unit including a plurality of inverter bridge arms respectively including a high-side switch and a low-side switch; a multichannel grid driver outputting high-side control signals and switching signals to control the low-side switches by obtaining indicating signals indicating switching control of the plurality of inverter bridge arms; a grid driving unit including a plurality of gate drivers outputting high-side switching signals to control the high-side switches in response to the high-side control signals; and a balancing unit keeping voltage balance between the multichannel grid driver and the plurality of gate drivers.

Description

Gate drive apparatus and there is the inverter of gate drive apparatus
This application claims priority and the rights and interests of the 10-2014-0074180 korean patent application submitted in Korean Intellectual Property Office on June 18th, 2014, the open of this korean application is contained in this by reference.
Technical field
The disclosure relates to a kind of with the gate drive apparatus of high voltage drive and the inverter with described gate drive apparatus.
Background technology
Inverter (a kind of circuit receiving direct current (DC) electric power and output AC (AC) electric power) can control the size, frequency etc. of the voltage exporting AC electric power, and can be used for drive motors etc.
In family and industry, widely use such inverter, due to the characteristic of commercial available electric power, high voltage AC electric power may be imported into inverter.
In order to drive such inverter, can adopt gate drive apparatus, wherein, the high-side switch and low side switch that are used for each brachium pontis provided in multiple brachium pontis of AC electric power in inverter close or disconnect by gate drive apparatus.
In this case, because high voltage is applied to high-side switch, therefore gate drive apparatus should have the voltage endurance that can tolerate the high-voltage level being applied to high-side switch.
When industrial inverter, the voltage with the level of 1200V or higher can be applied to high-side switch, and the gate drive apparatus controlling the driving of high-side switch should have the voltage endurance of the voltage level that can tolerate 1200V or higher.But the gate drive apparatus with such voltage endurance has relatively high manufacturing cost.
The prior art relevant to the inverter circuit comprising gate drive apparatus will be understood with reference to following prior art document.
[prior art document]
10-2005-0052339 Korea Patent Laid is open
Summary of the invention
One side of the present disclosure can provide a kind of and stably can operate with high voltage and have the gate drive apparatus of low manufacturing cost and have the inverter of described gate drive apparatus.One side of the present disclosure also can provide a kind of and can prevent from applying under the transient state the gate drive apparatus of the voltage with the level being equal to or greater than resistance to voltage level and have the inverter of described gate drive apparatus.
According to one side of the present disclosure, a kind of gate drive apparatus can comprise: multichannel gate drivers, and the index signal in response to the operation of control inverter exports the low side switch signal of the low side switch of high side control signal and control inverter; Multiple gate drivers, exports the high-side switch signal of the high-side switch of control inverter in response to high side control signal; Balancing unit, keeps the balance of voltage between multichannel gate drivers and described multiple gate drivers.
Balancing unit can comprise: multiple resistor and multiple capacitor, is connected respectively to multichannel gate drivers and described multiple gate drivers.
Gate drive apparatus also can comprise single driving power unit, driving electric power is supplied to drive element of the grid and multiple diode.
According to another aspect of the present disclosure, a kind of inverter can comprise: inverter unit, comprise and comprise high-side switch and low side switch respectively and multiple inverter legs by carrying out output AC electric power to input electric power conversion, wherein, high-side switch and low side switch are connected in series in mutually provides between the input electric power terminal of input electric power and ground; Multichannel gate drivers, in response to the index signal of the operation of control inverter, exports the low side switch signal of high side control signal and control low side switch; Multiple gate drivers, in response to high side control signal, exports the high-side switch signal controlling high-side switch; Balancing unit, keeps the balance of voltage between multichannel gate drivers and described multiple gate drivers.
Accompanying drawing explanation
From the detailed description below in conjunction with accompanying drawing, above and other aspect of the present disclosure, other advantage of characteristic sum more clearly will be understood, in the accompanying drawings:
Fig. 1 illustrates the block diagram comprising the inverter of gate drive apparatus according to the exemplary embodiment in the disclosure;
Fig. 2 is the circuit diagram of the gate drive apparatus be shown specifically according to the exemplary embodiment in the disclosure;
Fig. 3 is the diagram of the example of the balancing unit that Fig. 2 is shown;
Fig. 4 A is the diagram of the example of the power supply unit that Fig. 2 is shown;
Fig. 4 B is the block diagram of another example of the power supply unit that Fig. 2 is shown.
Embodiment
Exemplary embodiment of the present disclosure is described in detail now with reference to accompanying drawing.
But, the disclosure can be implemented with much different forms, and the disclosure should not be construed as limited to embodiment set forth herein.On the contrary, provide these embodiments, make the disclosure to be abundant and complete, and the scope of the present disclosure is fully conveyed to those skilled in the art.
In the accompanying drawings, in order to clear, the shape and size of element can be exaggerated, and identical label will be used to specify same or analogous element all the time.
Fig. 1 illustrates the block diagram comprising the inverter of gate drive apparatus according to the exemplary embodiment in the disclosure.
With reference to Fig. 1, inverter can comprise gate drive apparatus, and gate drive apparatus comprises inverter unit 100, drive element of the grid 200 and the balancing unit 300 with multiple inverter legs 110,120 and 130.
First, inverter unit 100 can comprise changes multiple inverter legs 110,120 and 130 with output AC (AC) electric power to input electric power, when inverter unit 100 exports three-phase AC electric power, often need an inverter leg mutually.Therefore, inverter unit 100 can comprise first inverter leg 110, second inverter leg 120 corresponding with U phase, V phase and W and the 3rd inverter leg 130.
First inverter leg 110 can comprise the first high-side switch HM1 and the first low side switch LM1, second inverter leg 120 can comprise the second high-side switch HM2 and the second low side switch LM2, and the 3rd inverter leg 130 can comprise third high side switch HM3 and the 3rd low side switch LM3.
First high-side switch HM1 and the first low side switch LM1, the second high-side switch HM2 and the second low side switch LM2 and third high side switch HM3 and the 3rd low side switch LM3 mutually can be connected in series in respectively and provide between the input electric power terminal of input electric power VH and ground.Can in response to the switching signal HSu3 transmitted by drive element of the grid 200, HSv3, HSw3, LSu2, LSv2 and LSw2 control the first high-side switch HM1, the second high-side switch HM2 and third high side switch HM3 and the first low side switch LM1, the second low side switch LM2 and the 3rd low side switch LM3 are switched on or switched off.
Drive element of the grid 200 can carry out the index signal HSu1 of switch control rule in response to instruction to inverter unit 100, HSv1, HSw1, LSu1, LSv1 and LSw1 come output switching signal HSu3, HSv3, HSw3, LSu2, LSv2 and LSw2.
Meanwhile, the voltage with the voltage level corresponding with input electric power VH can be applied to the terminal of the drive element of the grid 200 inputting VSu, VSv and VSw according to the first high-side switch HM1, the second high-side switch HM2 and being switched on or switched off of third high side switch HM3.
Balancing unit 300 can allow the voltage of the terminal of the drive element of the grid 200 being applied to input VSu, VSv and VSw be assigned to VS1, VS2 and VS3 and VS1, VS2, VS3 are applied to drive element of the grid 200, and can keep the balance of voltage.
Meanwhile, can comprise single driving power unit 400 according to the gate drive apparatus of the exemplary embodiment in the disclosure, driving electric power is supplied to drive element of the grid 200 by single driving power unit 400.
In addition, gate drive apparatus also can comprise power supply unit 500, and power supply unit 500 is for being applied to drive element of the grid 200 by the single electric power VCC provided from single driving power unit 400.
Fig. 2 is the circuit diagram of the gate drive apparatus be shown specifically according to the exemplary embodiment in the disclosure.
With reference to Fig. 2, drive element of the grid 200 and balancing unit 300 can be comprised according to the gate drive apparatus of the exemplary embodiment in the disclosure.Drive element of the grid 200 can comprise multichannel gate drivers 210, first grid driver 220, second grid driver 230 and the 3rd gate drivers 240, and balancing unit 300 can comprise the first balancer 310, second balancer 320 and the 3rd balancer 330.
Drive element of the grid 200 also can comprise: the first capacitor C1, is connected to the input side of first grid driver 220; Second capacitor C2, is connected to the outlet side of first grid driver 220; 3rd capacitor C3, is connected to the input side of second grid driver 230; 4th capacitor C4, is connected to the outlet side of second grid driver 230; 5th capacitor, is connected to the input side of the 3rd gate drivers 240; 6th capacitor C6, is connected to the outlet side of the 3rd gate drivers 240.
Simultaneously, the multichannel gate drivers 210 be included in drive element of the grid 200 can have switch is carried out in the instruction being input to it high side index signal HSu1, HSv1 and HSw1 to high-side switch, and exportable first control signal HSu2, the second control signal HSv2 and the 3rd control signal HSw2.Here, the low level of the first control signal HSu2, the second control signal HSv2 and the 3rd control signal HSw2 can be equal with the level of voltage of the VS terminal being applied to multichannel gate drivers 210, and the high level of the first control signal HSu2, the second control signal HSv2 and the 3rd control signal HSw2 can be equal with the level of voltage of the VB terminal being applied to multichannel gate drivers 210.In addition, the multichannel gate drivers 210 be included in drive element of the grid 200 can have switch is carried out in the instruction being input to it downside index signal LSu1, LSv1 and LSw1 to low side switch, and exportable low side switch signal LSu2, LSv2 and LSw2.Here, the high level of low side switch signal LSu2, LSv2 and LSw2 can be equal with the level of voltage of the VCC terminal being applied to multichannel gate drivers 210.
Being included in the first grid driver 220 in drive element of the grid 200, second grid driver 230 and the 3rd gate drivers 240 can be separately provided as single channel gate drivers, and the first control signal HSu2, the second control signal HSv2 from multichannel gate drivers 210 output and the 3rd control signal HSw2 that are input to it can be had, and high-side switch signal HSu3, HSv3 and HSw3 can be outputted to inverter unit 100, thus control the switch of corresponding high-side switch HM1, HM2 and HM3.Here, the low level of high-side switch signal HSu3, HSv3 and HSw3 can be equal with the level of voltage of the VS terminal being applied to first grid driver 220, second grid driver 230 and the 3rd gate drivers 240 respectively, and the high level of high-side switch signal HSu3, HSv3 and HSw3 can be equal with the level of voltage of the VB terminal being applied to first grid driver 220, second grid driver 230 and the 3rd gate drivers 240 respectively.
Therefore, each grid of high-side switch HM1, HM2 and HM3 and low side switch LM1, LM2 and LM3 can have switching signal HSu3, HSv3, HSw3, LSu2, LSv2 and LSw2 of being input to it from drive element of the grid 200, thus being switched on or switched off of controllable switch.
Balancing unit 300 can be used for the switch controlling signal based on high-side switch HM1, HM2 and HM3, keeps multichannel gate drivers 210 and first grid driver 220, the balance of voltage between second grid driver 230 and the 3rd gate drivers 240 according to the switching manipulation of inverter unit 100.
In detail, the input electric power with the voltage level corresponding with the level of input electric power VH can be applied to drive element of the grid 200 according to being switched on or switched off of high-side switch HM1, HM2 and HM3, here, the first balancer 310, second balancer 320 and the 3rd balancer 330 can allow the voltage of the voltage level of the electric power with applying by dividing potential drop and be applied to the gate drivers 220,230 and 240 of multichannel gate drivers 210 and correspondence.
In detail, balancing unit 300 can, according to the switch of inverter unit 100, make the voltage being applied to drive element of the grid 200 be individually allocated to multichannel gate drivers 210 and multiple gate drivers 220,230 and 240.
Fig. 3 is the diagram of the example of the balancing unit that Fig. 2 is shown.
With reference to Fig. 3, balancing unit 300 can comprise the first balancer 310, second balancer 320 and the 3rd balancer 330.
First balancer 310 can comprise the first partial pressure unit 311 and the second partial pressure unit 312, second balancer 320 can comprise the 3rd partial pressure unit 321 and the 4th partial pressure unit the 322, three balancer 330 can comprise the 5th partial pressure unit 331 and the 6th partial pressure unit 332.
First partial pressure unit 311 can comprise resistor R31 and capacitor C31, parallel with one another being connected to of resistor R31 and capacitor C31 has between the terminal and ground of the VS1 of its output, second partial pressure unit 312 can comprise diode D32, resistor R32 and capacitor C32, and diode D32, resistor R32 and capacitor C32 are parallel with one another to be connected between the terminal with the VSu being input to it and the terminal with the VS1 exported from it.
3rd partial pressure unit 321 can comprise resistor R33 and capacitor C33, parallel with one another being connected to of resistor R33 and capacitor C33 has between the terminal and ground of the VS2 of its output, 4th partial pressure unit 322 can comprise diode D34, resistor R34 and capacitor C34, and diode D34, resistor R34 and capacitor C34 are parallel with one another to be connected between the terminal with the VSv being input to it and the terminal with the VS2 exported from it.
5th partial pressure unit 331 can comprise capacitor R35 and capacitor C35, parallel with one another being connected to of capacitor R35 and capacitor C35 has between the terminal and ground of the VS3 of its output, 6th partial pressure unit 332 can comprise diode D36, resistor R36 and capacitor C36, and diode D36, resistor R36 and capacitor C36 are parallel with one another to be connected between the terminal with the VSw being input to it and the terminal with the VS3 exported from it.
With reference to Fig. 2 and Fig. 3, first partial pressure unit 311, the 3rd partial pressure unit 321 and the 5th partial pressure unit 331 can be connected to multichannel gate drivers 210, second partial pressure unit 312 can be connected to first grid driver 220,4th partial pressure unit 322 can be connected to second grid driver the 230, six partial pressure unit 332 can be connected to the 3rd gate drivers 240.
Therefore, electric power can be divided into equal multiple voltages according to being switched on or switched off of the high-side switch HM1 of correspondence by the first partial pressure unit 311 and the second partial pressure unit 312 fifty-fifty, described multiple voltage will be applied to multichannel gate drivers 210 and first grid driver 220, electric power can be divided into equal multiple voltages according to being switched on or switched off of the high-side switch HM2 of correspondence by the 3rd partial pressure unit 321 and the 4th partial pressure unit 322 fifty-fifty, described multiple voltage will be applied to multichannel gate drivers 210 and second grid driver 230, electric power can be divided into equal multiple voltages according to being switched on or switched off of the high-side switch HM3 of correspondence by the 5th partial pressure unit 331 and the 6th partial pressure unit 322 fifty-fifty, described multiple voltage will be applied to multichannel gate drivers 210 and the 3rd gate drivers 240.
Such as, the operation relevant to the U phase of three-phase alternating current (AC) electric power exported by inverter unit 100 of drive element of the grid 200 will be described.The input electric power VH with the voltage level of 1200V or higher can be applied to the inverter leg 110 corresponding with the U of the three-phase AC electric power exported by inverter unit 100, and the electric power being applied to drive element of the grid 200 can be distributed to multichannel gate drivers 210 and first grid driver 220, to have equal voltage level fifty-fifty according to being switched on or switched off of high-side switch HM1 of correspondence.In this case, multichannel gate drivers 210 and first grid driver 220 can operate in the withstand voltage scope of 0V to 600V.
According to the exemplary embodiment in the disclosure in detail, the operation relevant to the U phase of three-phase alternating current (AC) electric power exported by inverter unit 100 of drive element of the grid 200 will be described.When the low side switch LM1 of inverter leg 110 has the connection signal being applied to it, the first capacitor C1 and the second capacitor C2 uses VCC to charge by single driving power unit 400 and power supply unit 500.
Then, when low side switch LM1 has the cut-off signal that is applied to it and high-side switch HM1 has the connection signal being applied to it, the terminal with the VSu being input to it of drive element of the grid 200 can have such voltage, and described voltage has the level corresponding with the level of the input electric power VH applied.
Described voltage can be applied to the VS terminal of first grid driver 220.In addition, by the voltage of the voltage and the second capacitor C2 that are applied to VS terminal to determine the voltage of the VB terminal of first grid driver 220.Such as, the voltage of VB terminal is obtained by suing for peace to the voltage and the voltage be filled with in the second capacitor C2 that are applied to VS terminal.
When the voltage applied is distributed fifty-fifty by the first partial pressure unit 311 and the second partial pressure unit 312, the voltage of distribution can be applied to the COM terminal of first grid driver 220.In addition, by the voltage of the voltage and the first capacitor C1 that are applied to COM terminal to determine the voltage of the VCC terminal of first grid driver 220.Such as, the voltage of VCC terminal is obtained by suing for peace to the voltage and the voltage be filled with in the first capacitor C1 that are applied to COM terminal.
Therefore, by the voltage level that is applied to the electric power of the VS terminal of first grid driver 220 and be applied to first grid driver 220 the voltage level of electric power of VB terminal to determine the voltage range of lead-out terminal OUT, lead-out terminal OUT has the switching signal HSu3 for driving high-side switch HM1 exported from it.
In addition, by the voltage level that is applied to the electric power of the COM terminal of first grid driver 220 and be applied to first grid driver 220 the voltage level of electric power of VCC terminal to determine the voltage range of the input terminal IN of first grid driver 220.
In detail, according to the exemplary embodiment in the disclosure, the voltage range of the signal output terminal OUT of first grid driver 220 can from be applied to first grid driver 220 VS terminal electric power voltage level (such as, VH) to the voltage level (such as, VH+VCCb3) of electric power of VB terminal being applied to first grid driver 220.
In addition, from the lead-out terminal UOUT of multichannel gate drivers 210 export and be applied to the voltage of the input terminal IN of first grid driver 220 scope can from be applied to first grid driver 220 COM terminal electric power voltage level (such as, 0.5 × VH) to the voltage level (such as, 0.5 × VH+VCCa) of electric power of VCC terminal being applied to first grid driver 220.
In addition, be applied to the voltage of input terminal HUIN, HVIN, HWIN, LUIN, LVIN and LWIN of each passage of multichannel gate drivers 210 scope can from be applied to multichannel gate drivers 210 COM terminal electric power voltage level (such as, 0V) to the voltage level (such as, VCC) of electric power of VCC terminal being applied to multichannel gate drivers 210.
According to above-described embodiment of the present disclosure, the description of the operation of being correlated with W phase with the V phase of the three-phase AC electric power exported by inverter unit 100 of drive element of the grid 200 can be identical with foregoing description, will omit it and describe in detail.
Meanwhile, due to the exportable switching signal LSu2 of multichannel gate drivers 210, LSv2 and LSw2, to control the switching manipulation of low side switch LM1, LM2 and LM3, independent low voltage gate driver therefore can not be needed.
Inverter according to the exemplary embodiment in the disclosure can comprise: inverter unit 100, have and comprise high-side switch HM1, HM2 and HM3 and low side switch LM1, LM2 and LM3 and multiple inverter legs 110,120 and 130 by changing output AC electric power to input electric power VH, wherein, high-side switch and low side switch are connected in series in mutually provides between the input electric power terminal of input electric power and ground; Multichannel gate drivers 210, obtain the index signal HSu1 of the switch control rule of the multiple inverter leg 110,120 and 130 of instruction, HSv1, HSw1, LSu1, LSv1 and LSw1, to export high side control signal HSu2, HSv2, HSw2 and to control low side switch signal LSu2, LSv2 and LSw2 of low side switch; Multiple gate drivers 220,230 and 240, the control signal for controlling high-side switch HM1, HM2 and HM3 multiple inverter leg 110,120 and 130 is received, so that the control signal received is outputted to high-side switch HM1, HM2 and the HM3 corresponding with the control signal received from multichannel gate drivers 210; Balancing unit 300, the voltage being applied to multiple gate drivers 220,230 and 240 is distributed to multichannel gate drivers 210 and multiple gate drivers 220,230 and 240 by switch according to high-side switch HM1, HM2 and HM3 respectively, and keeps the balance distributing to the voltage of multichannel gate drivers 210 and multiple gate drivers 220,230 and 240.
With reference to Fig. 3, balancing unit 300 can comprise for the first partial pressure unit 311 of multichannel gate drivers 210, the 3rd partial pressure unit 321 and the 5th partial pressure unit 331, for the second partial pressure unit 312 of first grid driver 220, for the 4th partial pressure unit 322 of second grid driver 230, for the 6th partial pressure unit 332 of the 3rd gate drivers 240.
First partial pressure unit 311 can comprise the first resistor R31 and the first capacitor C31.In this case, the first resistor R31 can be connected to multichannel gate drivers 210.In addition, the first capacitor C31 can be parallel-connected to the first resistor R31.
Second partial pressure unit 312 can comprise the second resistor R32 and the second capacitor C32.In this case, the second resistor R32 can be connected to first grid driver 220.In addition, the second capacitor C32 can be parallel-connected to the second resistor R32.
3rd partial pressure unit 321 can comprise the 3rd resistor R33 and the 3rd capacitor C33.In this case, the 3rd resistor R33 can be connected to multichannel gate drivers 210.In addition, the 3rd capacitor C33 can be parallel-connected to the 3rd resistor R33.
4th partial pressure unit 322 can comprise the 4th resistor R34 and the 4th capacitor C34.In this case, the 4th resistor R34 can be connected to second grid driver 230.In addition, the 4th capacitor C34 can be parallel-connected to the 4th resistor R34.
5th partial pressure unit 331 can comprise the 5th resistor R35 and the 5th capacitor C35.In this case, the 5th resistor R35 can be connected to multichannel gate drivers 210.In addition, the 5th capacitor C35 can be parallel-connected to the 5th resistor R35.
6th partial pressure unit 332 can comprise the 6th resistor R36 and the 6th capacitor C36.In this case, the 6th resistor R36 can be connected to the 3rd gate drivers 240.In addition, the 6th capacitor C36 can be parallel-connected to the 6th resistor R36.
Here, the first capacitor C31 to the 6th capacitor C36 can prevent the voltage's distribiuting under the transient state between multichannel gate drivers 210 and first grid driver 220, between multichannel gate drivers 210 and second grid driver 230 or between multichannel gate drivers 210 and the 3rd gate drivers 240 uneven.Here, transition state can indicate output HSu2, HSv2, HSw2, HSu3, HSv3 and HSw3 from multichannel gate drivers 210 or multiple gate drivers 220,230 and 240 to change into low level state from high level.
In detail, the signal exported by multichannel gate drivers 210 or multiple gate drivers 220,230 and 240 changes into low level situation from high level, balancing unit 300 can keep the level of the voltage distributing to multichannel gate drivers 210 or multiple gate drivers 220,230 and 240.
In addition, the second partial pressure unit 312, the 4th partial pressure unit 322 and the 6th partial pressure unit 332 is constructed by resistor R32, R34 and R36, capacitor C32, C34 and C36 and diode D32, D34 and D36.
Diode D32, D34 and D36 of being connected in parallel with capacitor in each partial pressure unit can form the path for using the driving electric power VCC of single level to charge to corresponding electric capacity C2, C4 and C6.
According to the exemplary embodiment in the disclosure, when carrying out switch to the input electric power of the level with about 1200V, the gate drive apparatus with the voltage endurance being less than 1200V can be used via multichannel gate drivers 210 and multiple gate drivers 220,230 and 240.
Such as, the voltage being applied to drive element of the grid 200 when carrying out switch is assigned to multichannel gate drivers 210 and first grid driver 220, to allow stably to operate drive circuit, thus the gate drive apparatus of the costliness of the voltage endurance with 1200V can be replaced, to reduce manufacturing cost.
According to the exemplary embodiment in the disclosure, the voltage that can prevent from having under the transient state resistance to voltage level or more high level by the first capacitor C31 to the 6th capacitor C36 is applied to multichannel gate drivers 210 and multiple gate drivers 220,230 and 240.
In addition, according to the exemplary embodiment in the disclosure, because the exportable switching signal LSu2 of multichannel gate drivers 210, LSv2 and LSw2 are to control the switching manipulation of low side switch LM1, LM2 and LM3, therefore low voltage gate driver can not be constructed individually.
Fig. 4 A and Fig. 4 B is the diagram of the example of the power supply unit that Fig. 2 is shown.
Power supply unit 500 can comprise multiple diode, and the electric power VCC of single level can be supplied to the predetermined terminal of multichannel gate drivers 210 and multiple gate drivers 220,230 and 240 by described multiple diode.
With reference to Fig. 4 A, power supply unit 500 can comprise: the first diode D51, comprises the anode with the driving electric power VCC being applied to it and the negative electrode with the first electrical power for operation VCCa exported from it; Multiple second diode D52, D53 and D54, comprise the anode that is applied in the first electrical power for operation VCCa and have export from it respectively multiple second electrical power for operation VCCb1, VCCb2 and VCCb3 negative electrode.
With reference to Fig. 4 B, power supply unit 500 can comprise: the first diode D55, comprises the anode having and be applied in and drive electric power VCC and the negative electrode exporting the first electrical power for operation VCCa; Multiple second diode D56, D57 and D58, comprises and is applied in the anode driving electric power VCC and the negative electrode exporting multiple second electrical power for operation VCCb1, VCCb2 and VCCb3 respectively.
With reference to Fig. 2 and Fig. 4 A, power supply unit 500 by multiple diode D51, D52, D53 and D54 by the electric power transfer of single level that provides from single driving power unit 400 to multichannel gate drivers 210 or multiple gate drivers 220,230 and 240.
Therefore, even if when using the electric power VCC of single level, electric power also can be supplied stably to multichannel gate drivers 210 and multiple gate drivers 220,230 and 240, with compare driving electric power to be supplied to multichannel gate drivers 210 with each circuit in multiple gate drivers 220,230 and 240 independently, circuit structure can be simplified, thus can reduce manufacturing cost further.
In addition, power supply unit 500 can form the path for using the driving electric power VCC of single level to charge to each capacitor C1, C2, C3, C4, C5 and C6.
As explained above, according to the exemplary embodiment in the disclosure, due to can gate drive apparatus be operated with relatively high voltage stabilization and there is the inverter of described gate drive apparatus, therefore by replacing the withstand voltage driver of relatively costly height to reduce manufacturing cost, and there is under can preventing transition state the applying of the voltage than resistance to voltage level or the high level of higher level.
Although below illustrate and describe exemplary embodiment, those skilled in the art it will be clear that, various amendment and change can be made when not departing from the scope be defined by the claims of the present invention.

Claims (18)

1. a gate drive apparatus, comprising:
Multichannel gate drivers, the index signal in response to the operation of control inverter exports the low side switch signal of the low side switch of high side control signal and control inverter;
Multiple gate drivers, exports the high-side switch signal of the high-side switch of control inverter in response to high side control signal;
Balancing unit, keeps the balance of voltage between multichannel gate drivers and described multiple gate drivers.
2. gate drive apparatus as claimed in claim 1, wherein, balancing unit comprises: multiple balancer, and voltage is distributed to respectively multichannel gate drivers and described multiple gate drivers, described voltage is applied to described multiple gate drivers respectively from inverter.
3. gate drive apparatus as claimed in claim 2, wherein, each balancer in described multiple balancer comprises: the first resistor, is connected to multichannel gate drivers; Second resistor, is connected to the gate drivers of the correspondence in described multiple gate drivers.
4. gate drive apparatus as claimed in claim 3, wherein, each balancer in described multiple balancer also comprises:
First capacitor, is parallel-connected to the first resistor;
Second capacitor, is parallel-connected to the second resistor.
5. gate drive apparatus as claimed in claim 1, wherein, when the level of the signal exported by any one gate drivers in described multiple gate drivers changes into low level from high level, balancing unit keeps the level distributing to the voltage of described multiple gate drivers.
6. gate drive apparatus as claimed in claim 1, also comprises: single driving power unit, driving electric power is supplied to described multiple gate drivers.
7. gate drive apparatus as claimed in claim 6, also comprise: power supply unit, receive and drive electric power, the first electrical power for operation is transferred to the input side of described multiple gate drivers, and multiple second electrical power for operation is transferred to the outlet side of described multiple gate drivers respectively.
8. gate drive apparatus as claimed in claim 7, wherein, power supply unit comprises:
First diode, comprises the anode applying to drive electric power and the negative electrode exporting the first electrical power for operation;
Multiple second diode, each second diode comprises the anode of applying first electrical power for operation and exports the negative electrode of the second corresponding electrical power for operation.
9. gate drive apparatus as claimed in claim 7, wherein, power supply unit comprises:
First diode, comprises the anode applying to drive electric power and the negative electrode exporting the first electrical power for operation;
Multiple second diode, each second diode comprises the anode applying to drive electric power and the negative electrode exporting the second corresponding electrical power for operation.
10. an inverter, comprising:
Inverter unit, comprise and comprise high-side switch and low side switch respectively and the multiple inverter legs with output AC electric power are changed to input electric power, wherein, high-side switch and low side switch are connected in series in mutually provides between the input electric power terminal of input electric power and ground;
Multichannel gate drivers, the index signal in response to the operation of control inverter exports high side control signal and controls the low side switch signal of low side switch;
Multiple gate drivers, exports the high-side switch signal controlling high-side switch in response to high side control signal;
Balancing unit, keeps the balance of voltage between multichannel gate drivers and described multiple gate drivers.
11. inverters as claimed in claim 10, wherein, balancing unit comprises: multiple balancer, respectively by voltage distribution to multichannel gate drivers and described multiple gate drivers, described voltage is applied to described multiple gate drivers respectively from inverter.
12. inverters as claimed in claim 11, wherein, each balancer in described multiple balancer comprises: the first resistor, is connected to multichannel gate drivers; Second resistor, is connected to the gate drivers of the correspondence in described multiple gate drivers.
13. inverters as claimed in claim 12, wherein, each balancer in described multiple balancer also comprises:
First capacitor, is parallel-connected to the first resistor;
Second capacitor, is parallel-connected to the second resistor.
14. inverters as claimed in claim 10, wherein, when the level of the signal exported by any one gate drivers in described multiple gate drivers changes into low level from high level, balancing unit keeps the level distributing to the voltage of described multiple gate drivers.
15. inverters as claimed in claim 10, also comprise: single driving power unit, driving electric power are supplied to described multiple gate drivers.
16. inverters as claimed in claim 15, also comprise: power supply unit, receive and drive electric power, the first electrical power for operation is transferred to the input side of described multiple gate drivers, and multiple second electrical power for operation is transferred to the outlet side of described multiple gate drivers respectively.
17. inverters as claimed in claim 16, wherein, power supply unit comprises:
First diode, comprises the anode applying to drive electric power and the negative electrode exporting the first electrical power for operation;
Multiple second diode, each second diode comprises the anode of applying first electrical power for operation and exports the negative electrode of the second corresponding electrical power for operation.
18. inverters as claimed in claim 16, wherein, power supply unit comprises:
First diode, comprises the anode applying to drive electric power and the negative electrode exporting the first electrical power for operation;
Multiple second diode, each second diode comprises the anode applying to drive electric power and the negative electrode exporting the second corresponding electrical power for operation.
CN201510084515.9A 2014-06-18 2015-02-16 Grid driving device and inverter having the same Pending CN105322769A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020140074180A KR20150145001A (en) 2014-06-18 2014-06-18 Gate driving device and inverter having the same
KR10-2014-0074180 2014-06-18

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CN105322769A true CN105322769A (en) 2016-02-10

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