CN110350771A - IGBT circuit with charge discharging branch, compressor and air conditioner - Google Patents
IGBT circuit with charge discharging branch, compressor and air conditioner Download PDFInfo
- Publication number
- CN110350771A CN110350771A CN201910718899.3A CN201910718899A CN110350771A CN 110350771 A CN110350771 A CN 110350771A CN 201910718899 A CN201910718899 A CN 201910718899A CN 110350771 A CN110350771 A CN 110350771A
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- igbt
- branch
- charge discharging
- circuit
- grid
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- 238000007599 discharging Methods 0.000 title claims abstract description 37
- 238000004378 air conditioning Methods 0.000 claims description 9
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000003071 parasitic effect Effects 0.000 description 2
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
Classifications
-
- 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
- H02M1/00—Details of apparatus for conversion
- H02M1/08—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
- H02M1/088—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters for the simultaneous control of series or parallel connected semiconductor devices
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Rectifiers (AREA)
Abstract
The invention discloses an IGBT circuit with a charge discharging branch, a compressor and an air conditioner, wherein the IGBT circuit comprises at least one IGBT branch, each IGBT branch is provided with at least one IGBT, and the grid of each IGBT is connected with a driving resistor and the charge discharging branch; when the IGBT is in an off state, the charge discharging branch circuit maintains the grid voltage of the IGBT below the on voltage of the IGBT. The invention can effectively prevent the IGBT from being conducted by mistake or not being completely conducted.
Description
Technical field
The present invention relates to the IGBT circuit of IGBT field of circuit technology more particularly to electrically charged branch of releasing, compressor and
Air-conditioning.
Background technique
The air-conditioning market of requirement due to to(for) product efficiency, household, business air conditioner are sent out towards the direction of comprehensive frequency conversion
Exhibition, and for convertible frequency air-conditioner product, the design of frequency conversion drive plate plays the reliability and competitiveness of product most important
Effect.The inverter circuit overwhelming majority in convertible frequency air-conditioner frequency conversion drive plate uses IPM application scheme at present, and IPM has
The advantages that design difficulty is low, integrated level is high, but its higher cost, IGBT turn on and off speed the disadvantages such as can not to adjust also the same
Obviously.For business air conditioner frequency converter, high-power IGBT discrete device+power device driver (DRIVER) scheme has been answered
For formal product, and IGBT discrete device EMI as caused by route parasitic parameter and power device parasitic parameter itself
Interference problem then becomes the difficult point of product reliability design.
Existing air conditioning frequency converter all has inverter circuit, the IGBT upper and lower bridge arm alternate conduction in inverter circuit, following bridge
Arm IGBT citing, when lower bridge arm IGBT bridge arm IGBT in an off state and upper is ready for opening movement, lower bridge arm IGBT
Vce it is smaller, and when upper bridge arm IGBT is fully on, since IGBT opens speed in delicate grade, the Vce of lower bridge arm IGBT is fast
Speed rises to DC bus-bar voltage, and this quick voltage change ratio can carry out charging electric to lower bridge arm IGBT input capacitance
Make, charging current flows through gate driving resistance by the sending of lower bridge arm IGBT grid and returns to GND, therefore the pressure drop that grid resistance generates
It will lead to the lifting of lower bridge arm IGBT grid voltage, and bring power device misleads or not exclusively opens phenomenon.
Therefore, how to design IGBT circuit, compressor and the air-conditioning of electrically charged branch of releasing is industry skill urgently to be resolved
Art problem.
Summary of the invention
It is easy the defect for misleading or not exclusively opening in order to solve to exist in the prior art IGBT, the present invention proposes electrification
Lotus is released IGBT circuit, compressor and the air-conditioning of branch.
The technical solution adopted by the present invention is that the IGBT circuit of the electrically charged branch of releasing of design, including at least one IGBT
Branch, each IGBT branch are equipped at least one IGBT, and the grid of IGBT is connected with driving resistance and charge discharging resisting branch；
When IGBT is in an off state, charge discharging resisting branch maintains the grid voltage of IGBT under the conducting voltage of IGBT.
Preferably, charge discharging resisting branch is switched on when IGBT is in an off state, and charge discharging resisting branch is in IGBT
It is disconnected when on-state.
Preferably, charge discharging resisting branch routes at least one switching tube composition, one end ground connection of charge discharging resisting branch, the other end
It connects between the grid and driving resistance of IGBT.
Preferably, switching tube is triode.
Preferably, charge discharging resisting branch routes a triode and constitutes, and the collector of triode connects grid and drive in IGBT
Between dynamic resistance, the emitter of triode is grounded, and the base stage of triode is control terminal.
Preferably, the grid of IGBT connects driver by driving resistance and control module, driver are connected on control mould
Between block and driving resistance.
Preferably, the on off operating mode of IGBT and charge discharging resisting branch is controlled by control module.
Preferably, IGBT circuit includes to export the three of three-phase alternating current IGBT branches, and every IGBT branch is all provided with
There are the upper bridge arm IGBT and lower bridge arm IGBT of series connection.
The invention also discloses the compressor with above-mentioned IGBT circuit and with the air-conditioning of the compressor.
Compared with prior art, the present invention designs on conventional IGBT branch road charge discharging resisting branch, charge discharging resisting branch
Under the conducting voltage that the grid voltage of IGBT is maintained IGBT in IGBT shutdown, prevent IGBT from misleading or not exclusively
It is open-minded.
Detailed description of the invention
Below with reference to embodiment and attached drawing, the present invention is described in detail, in which:
Fig. 1 is the connection schematic diagram of IGBT circuit in the present invention.
Specific embodiment
As shown in Figure 1, IGBT circuit proposed by the present invention includes at least one IGBT branch, each IGBT branch is equipped with
At least one IGBT, in a preferred embodiment, IGBT circuit include to export the three of three-phase alternating current IGBT branches, IGBT
Branch is set there are two IGBT, is that the grid for upper bridge arm IGBT and the lower bridge arm IGBT, IGBT being connected in series is connected with driving respectively
Resistance R1, then by driving resistance R1 connection driver and control module, driver is connected on control module and driving resistance R1
Between, control module opens shutdown control signal to IGBT sending, and driver is responsible for carrying out function to the control signal of control module
Rate amplification, driving resistance R1 open turn-off speed for adjusting IGBT.The grid of IGBT is also connected in parallel with driving resistance R1
Charge discharging resisting branch, when IGBT is in an off state, the grid voltage of IGBT is maintained leading for IGBT by charge discharging resisting branch
Be powered pressure under, with prevent IGBT from misleading or not exclusively it is open-minded.
Specifically, charge discharging resisting branch routes at least one switching tube composition, a termination GND of charge discharging resisting branch, another
Between the grid and driving resistance R1 of one end Jie IGBT.Charge discharging resisting branch IGBT in an ON state when be disconnected, protect
Card IGBT can be switched on by normally, charge discharging resisting branch when IGBT is in an off state, and the grid of IGBT is logical at this time
It crosses charge discharging resisting branch and meets GND, i.e., when charge discharging resisting branch is switched on, the grid voltage of IGBT is 0V.
By taking lower bridge arm IGBT as an example, when lower bridge arm IGBT bridge arm IGBT in an off state and upper is ready for opening movement
When, the Vce of lower bridge arm IGBT is smaller, when upper bridge arm IGBT is fully on, since IGBT opens speed in Microsecond grade, lower bridge arm
The Vce of IGBT rises rapidly as DC bus-bar voltage, and this quick voltage change ratio can grid knot to lower bridge arm IGBT
Capacitor carry out charging action, due to charge discharging resisting branch in lower bridge arm IGBT off state in an ON state, when grid knot
When capacitance charging current generates, resistance R1 bypass will be driven by charge discharging resisting branch, charging circuit flows directly into GND, lower bridge
The grid voltage of arm IGBT is 0V, is not in mislead or not exclusively open phenomenon.
Preferably, the on off operating mode of charge discharging resisting branch is controlled by control module, and control module is off in IGBT
When state, charge discharging resisting branch is placed in opening state, control module IGBT in an ON state when, by charge discharging resisting branch
It is turned off state.Charge discharging resisting branch includes switching tube, the control terminal link control module of switching tube, and control module passes through control
Switching tube processed switchs to switch the on off operating mode of charge discharging resisting branch.In a preferred embodiment, switching tube is triode, charge
Branch of releasing routes a triode Q1 and constitutes, and the collector of triode Q1 connects between the grid and driving resistance of IGBT, three poles
The emitter of pipe Q1 is grounded, and the base stage of triode Q1 is control terminal, i.e. the base stage link control module of triode Q1.
The invention also discloses the compressor with above-mentioned IGBT circuit and with the air-conditioning of the compressor.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (10)
1. a kind of IGBT circuit, including at least one IGBT branch, each IGBT branch is equipped at least one IGBT, institute
The grid for stating IGBT is connected with driving resistance；It is characterized in that, the grid of the IGBT is also connected with charge discharging resisting branch；It is described
When IGBT is in an off state, the grid voltage of the IGBT is maintained the electric conduction of the IGBT by the charge discharging resisting branch
Under pressure.
2. IGBT circuit as described in claim 1, which is characterized in that the charge discharging resisting branch is off in the IGBT
Be switched on when state, the charge discharging resisting branch the IGBT in an ON state when be disconnected.
3. IGBT circuit as described in claim 1, which is characterized in that the charge discharging resisting branch routes at least one switching tube structure
At one end of the charge discharging resisting branch is grounded, between another grid for terminating at the IGBT and the driving resistance.
4. IGBT circuit as claimed in claim 3, which is characterized in that the switching tube is triode.
5. IGBT circuit as claimed in claim 4, which is characterized in that the charge discharging resisting branch routes a triode and constitutes,
The collector of the triode connects between the grid and the driving resistance of the IGBT, and the emitter of the triode connects
Ground, the base stage of the triode are control terminal.
6. such as IGBT circuit described in any one of claim 1 to 5, which is characterized in that the grid of the IGBT passes through the drive
Dynamic resistance connection driver and control module, the driver are connected between the control module and driving resistance.
7. IGBT circuit as claimed in claim 6, which is characterized in that the on-off shape of the IGBT and the charge discharging resisting branch
State is controlled by control module.
8. IGBT circuit as described in claim 1, which is characterized in that the IGBT circuit includes to export three-phase alternating current
Three IGBT branches, every IGBT branch is equipped with the upper bridge arm IGBT and lower bridge arm IGBT of series connection.
9. a kind of compressor characterized by comprising IGBT circuit as claimed in any one of claims 1 to 8.
10. a kind of air-conditioning characterized by comprising compressor as claimed in claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910718899.3A CN110350771A (en) | 2019-08-05 | 2019-08-05 | IGBT circuit with charge discharging branch, compressor and air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910718899.3A CN110350771A (en) | 2019-08-05 | 2019-08-05 | IGBT circuit with charge discharging branch, compressor and air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110350771A true CN110350771A (en) | 2019-10-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910718899.3A Pending CN110350771A (en) | 2019-08-05 | 2019-08-05 | IGBT circuit with charge discharging branch, compressor and air conditioner |
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| CN (1) | CN110350771A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111478561A (en) * | 2020-04-30 | 2020-07-31 | 陕西亚成微电子股份有限公司 | Peak value eliminating method and circuit |
| CN113676029A (en) * | 2020-05-14 | 2021-11-19 | 北京机械设备研究所 | Active clamping circuit based on IGBT |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040011342A1 (en) * | 2002-07-02 | 2004-01-22 | Hitachi, Ltd. | Electronic device for internal combustion engine such as ignition device |
| CN102185286A (en) * | 2011-05-04 | 2011-09-14 | 武汉理工大学 | High-power insulated gate bipolar transistor (IGBT) redundancy driving protection circuit |
| CN103944548A (en) * | 2013-01-21 | 2014-07-23 | 株式会社电装 | Gate Drive Circuit For Transistor |
-
2019
- 2019-08-05 CN CN201910718899.3A patent/CN110350771A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040011342A1 (en) * | 2002-07-02 | 2004-01-22 | Hitachi, Ltd. | Electronic device for internal combustion engine such as ignition device |
| CN102185286A (en) * | 2011-05-04 | 2011-09-14 | 武汉理工大学 | High-power insulated gate bipolar transistor (IGBT) redundancy driving protection circuit |
| CN103944548A (en) * | 2013-01-21 | 2014-07-23 | 株式会社电装 | Gate Drive Circuit For Transistor |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111478561A (en) * | 2020-04-30 | 2020-07-31 | 陕西亚成微电子股份有限公司 | Peak value eliminating method and circuit |
| CN113676029A (en) * | 2020-05-14 | 2021-11-19 | 北京机械设备研究所 | Active clamping circuit based on IGBT |
| CN113676029B (en) * | 2020-05-14 | 2023-08-25 | 北京机械设备研究所 | Active clamp circuit based on IGBT |
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Application publication date: 20191018 |
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| RJ01 | Rejection of invention patent application after publication |