CN104539199A - Driving module of permanent magnet brushless direct current motor - Google Patents
Driving module of permanent magnet brushless direct current motor Download PDFInfo
- Publication number
- CN104539199A CN104539199A CN201410190344.3A CN201410190344A CN104539199A CN 104539199 A CN104539199 A CN 104539199A CN 201410190344 A CN201410190344 A CN 201410190344A CN 104539199 A CN104539199 A CN 104539199A
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- China
- Prior art keywords
- mosfet
- gate
- magnet brushless
- permanent
- circuit
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000010521 absorption reaction Methods 0.000 claims description 12
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 5
- 229910052782 aluminium Inorganic materials 0.000 claims description 5
- 239000004411 aluminium Substances 0.000 claims description 5
- 239000003990 capacitor Substances 0.000 claims description 3
- 230000000087 stabilizing effect Effects 0.000 claims description 3
- 239000010409 thin film Substances 0.000 claims description 3
- 230000005669 field effect Effects 0.000 abstract description 2
- 230000010354 integration Effects 0.000 abstract description 2
- 229910044991 metal oxide Inorganic materials 0.000 abstract description 2
- 150000004706 metal oxides Chemical class 0.000 abstract description 2
- 239000004065 semiconductor Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 description 4
- 230000015556 catabolic process Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 230000001629 suppression Effects 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000013499 data model Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
- H02P6/08—Arrangements for controlling the speed or torque of a single motor
- H02P6/085—Arrangements for controlling the speed or torque of a single motor in a bridge configuration
-
- 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
- H02M1/32—Means for protecting converters other than automatic disconnection
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P2201/00—Indexing scheme relating to controlling arrangements characterised by the converter used
- H02P2201/01—AC-AC converter stage controlled to provide a defined AC voltage
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Inverter Devices (AREA)
Abstract
The invention provides a driving module of a permanent magnet brushless direct current motor. The driving module solves a problem of a traditional discrete MOSFET integration module that an MOSFET (Metal Oxide Semiconductor Field Effect Transistor) is damaged due to the unbalanced current distribution of a device since parallel MOSFETs have inconsistent self-parameters and asymmetric circuit layout. The driving module structurally comprises an MOSFET driving module, wherein the MOSFET driving module is divided into three groups of mutually-independent full-bridge drivers to independently drive the U/V/W phases of the permanent magnet brushless direct current motor to output; and an upper bridge arm and a lower bridge arm of each full-bridge driver are independently formed by a plurality of MOSFETs which have same specifications and are connected in parallel, and the MOSFETs of the upper bridge arm and the lower bridge arm are in opposite arrangement. The driving module adopts three groups of completely independent MOSFET driving modules to independently drive the U/V/W phases of the permanent magnet brushless direct current motor, and the parallel MOSFETs in each group of MOSFET driving modules have the same specifications and are in the opposite arrangement, so that a damage rate of the MOSFET is reduced to a large extent; and when one module is damaged, a driving circuit and other modules do not need to be replaced so that the cost is saved to a large extent.
Description
Technical field
The present invention relates to motor-drive technique field, be specifically related to a kind of permanent-magnet brushless DC electric machine driver module.
Background technology
MOSFET(metal-oxide half field effect transistor) fast with its switching speed, conducting resistance is low etc., and advantage is used widely in electric automobile field, particularly in permanent-magnet brushless DC electric machine application scenario.At present, as shown in Figure 1, power tube P1 ~ P6 forms the major loop of permanent-magnet brushless DC electric machine to the Driving technique principle of existing permanent-magnet brushless DC electric machine, and brachium pontis in P1, P2, P3 formation, is also referred to as pipe, brachium pontis under P4, P5, P6, also referred to as lower pipe.Corresponding upper brachium pontis and lower brachium pontis form one group, export mutually for a certain of drive motors, and such as, the W phase that P1 and P4 forms full-bridge drive motors exports.When permanent-magnet brushless DC electric machine runs, at a time to only have on one group brachium pontis conducting under brachium pontis and a group, namely permanent-magnet brushless DC electric machine only has two windings energisings simultaneously, and we are called two-phase energising, are called phase current by the electric current of motor winding.Shang Qiao corresponding to rotating with motor and lower bridge MOSFET, according to the control signal received, manages and power turn-on by control unit, and drive motors rotates.
But single power MOSFET capacity often can not meet design requirement, the simple high power level MOSFET module that adopts will improve the complexity of product cost and drive circuit greatly.Now, just can select that power grade is less, market ample supply and prompt delivery, driving power are low and the simple MOSFET of circuit meets the requirement of power grade by parallel way.
Because the inconsistent and circuit layout of the MOSFET inherent parameters of parallel connection is asymmetric, device current certainly will be caused to distribute unbalanced, component failure time serious, can be made even to damage main circuit.Meanwhile, the installation of multitube parallel MOSFET connects the drive efficiency caused because radiating rate the is slow reduction problem existed.
Summary of the invention
The object of the invention is to propose a kind of permanent-magnet brushless DC electric machine driver module, solve existing discrete MOSFET integration module due to the inconsistent and circuit layout of the MOSFET inherent parameters of parallel connection asymmetric, cause device current to distribute unbalanced problem and cause MOSFET pipe to damage.
According to the permanent-magnet brushless DC electric machine driver module that the present invention proposes, comprise MOSFET driver module, it is characterized in that described MOSFET driver module is divided into three groups of separate full-bridges and drives and drive the U/V/W phase of described permanent-magnet brushless DC electric machine to export respectively, the upper brachium pontis that described full-bridge drives and lower brachium pontis are made up of multiple MOSFET pipe parallel connection of same size respectively, the MOSFET pipe face-off arrangement of described upper brachium pontis and lower brachium pontis.
Permanent-magnet brushless DC electric machine driver module of the present invention, adopt three groups completely independently MOSFET driver module drive the U/V/W phase of permanent-magnet brushless DC electric machine respectively, and often organize the identical and face-off arrangement of paralleling MOS FET pipe specification specification in MOSFET driver module, reduce the spoilage of MOSFET pipe significantly; When a wherein module damage, without the need to changing drive circuit and other modules, save cost dramatically.
Further; the upper and lower brachium pontis of described MOSFET driver module is equipped with gate protection circuit; described gate protection circuit is made up of voltage stabilizing didoe and resistor coupled in parallel; the input of described gate protection circuit is connected with the high and low end of gate drive signal respectively, between the gate drive circuit that the output of gate protection circuit is connected across MOSFET pipe and source electrode.Only electrostatic breakdown MOSFET pipe and suppression PWM driving voltage momentary spike in production or assembling process can be imitated like this.
Further, described MOSFET driver module adopts gate driver circuit, described gate driver circuit upper and lower bridge arm input signal is that PWM interlocks drive singal, interlocking signal is exported by the gate logic of governor circuit, be connected with module gate driver circuit by soft arranging wire, interlocking input signal ensures that PWM drive singal can not be input to the upper and lower bridge arm of MOSFET module simultaneously, prevents MOSFET module damage, ensures the safety of MOSFET module.
Further, the output of described upper brachium pontis and lower brachium pontis is parallel with Absorption Capacitance, and the capacitance of described Absorption Capacitance is determined according to the size of module bus bar stray inductance.Have the existence of stray inductance owing to connecting MOSFET module bus bar, just have peak voltage when MOSFET module shuts down and produce (surge voltage), these peak voltages are added on bus will cause V
cE>V
cEmax, just likely damage MOSFET module, therefore, configuration Absorption Capacitance can suppress surge voltage preferably, reduces the probability of module damage.Specifically, described Absorption Capacitance is thin-film capacitor.
Further, described MOSFET pipe, gate protection circuit and gate driver circuit are welded on one piece of aluminium base, make gate protection circuit manage compact being connected with the components and parts of gate driver circuit with MOSFET, reduce stray inductance and improve the stability of power MOSFET and reduce spoilage; Paralleling MOS FET pipe is mounted on aluminium base respectively simultaneously, the reduction thermal resistance of high degree, improves MOSFET pipe heat dispersion, reduces the wastage, improve drive efficiency.
Accompanying drawing explanation
Fig. 1 is brshless DC motor drive principle figure of the present invention;
Fig. 2 is MOSFET modular circuit schematic diagram of the present invention;
Fig. 3 is raster data model of the present invention and protective circuit schematic diagram.
Embodiment
Contrast accompanying drawing below, by the description to embodiment, the effect and operation principle etc. of the specific embodiment of the present invention as the mutual alignment between the shape of involved each component, structure, each several part and annexation, each several part are described in further detail.
Embodiment 1:
As Fig. 1,2, permanent-magnet brushless DC electric machine driver module of the present invention, comprise MOSFET driver module, MOSFET driver module is divided into three groups of separate full-bridges and drives and drive the U/V/W phase of permanent-magnet brushless DC electric machine to export respectively, the upper brachium pontis that full-bridge drives and lower brachium pontis are made up of multiple MOSFET pipe parallel connection of same size respectively, the MOSFET pipe face-off arrangement of upper brachium pontis and lower brachium pontis.As Fig. 1, P1 and P4 be one group independently full-bridge drive the W phase of permanent-magnet brushless DC electric machine, P2 and P5 be one group independently full-bridge drive the V phase of permanent-magnet brushless DC electric machine, P3 and P6 be one group independently full-bridge drive the U phase of permanent-magnet brushless DC electric machine.Upper brachium pontis and the lower brachium pontis of the full-bridge driving of the present embodiment are made up of 5 MOSFET pipes parallel connection of same size respectively, as shown in Figure 2.Here the same size of indication, refers to that upper and lower brachium pontis should adopt same companies as far as possible, try one's best the MOSFET that same batch is produced, parameter is identical.The MOSFET pipe face-off arrangement of upper brachium pontis and lower brachium pontis, to ensure that the operational environment of MOSFET pipe is substantially identical as far as possible.MOSFET driver module of the present invention also comprises gate protection circuit, gate driver circuit and Absorption Capacitance circuit.
Wherein, gate protection circuit is made up of voltage stabilizing didoe and resistor coupled in parallel; the input of gate protection circuit is connected with the high and low end of gate drive signal respectively, between the gate drive circuit that the output of gate protection circuit is connected across MOSFET pipe and source electrode, as shown in Figure 3.Gate protection circuit is mainly used in when processing finished product or component package, and electric hole (surge) voltage, the overvoltage etc. of avoiding the exterior static such as human body, tester, sealed in unit and circuit to produce damage MOSFET.Namely imitative only electrostatic breakdown MOSFET pipe and suppression PWM driving voltage momentary spike in production or assembling process.
The gate driver circuit upper and lower bridge arm input signal of the present embodiment is that PWM interlocks drive singal, and PWM interlocks drive singal and exported by the gate logic of governor circuit, is connected with module gate driver circuit by soft arranging wire.Interlocking drive singal can ensure that PWM drive singal can not be input to the upper and lower bridge arm of MOSFET module simultaneously, prevents MOSFET module damage, ensures the safety of MOSFET module.
Described Absorption Capacitance is connected in parallel on the output finger tip of brachium pontis and lower brachium pontis, and the capacitance of Absorption Capacitance is determined according to the size of module bus bar stray inductance.Have the existence of stray inductance owing to connecting MOSFET module bus bar, just have peak voltage when MOS module shuts down and produce (surge voltage), these peak voltages are added on bus will cause V
cE>V
cEmax, just likely damage MOSFET module, therefore, configuration Absorption Capacitance can suppress surge voltage preferably, reduces the probability of module damage.As preferred embodiment, Absorption Capacitance is thin-film capacitor.
Preferably, MOSFET pipe of the present invention, gate protection circuit and gate driver circuit are welded on one piece of aluminium base, make gate protection circuit manage compact being connected with the components and parts of gate driver circuit with MOSFET, reduce stray inductance and improve the stability of power MOSFET and reduce spoilage; Paralleling MOS FET pipe is mounted on aluminium base respectively simultaneously, the reduction thermal resistance of high degree, improves MOSFET pipe heat dispersion, reduces the wastage, improve drive efficiency.
Claims (7)
1. a permanent-magnet brushless DC electric machine driver module, comprise MOSFET driver module, it is characterized in that described MOSFET driver module is divided into three groups of separate full-bridges and drives and drive the U/V/W phase of described permanent-magnet brushless DC electric machine to export respectively, the upper brachium pontis that described full-bridge drives and lower brachium pontis are made up of multiple MOSFET pipe parallel connection of same size respectively, the MOSFET pipe face-off arrangement of described upper brachium pontis and lower brachium pontis.
2. permanent-magnet brushless DC electric machine driver module according to claim 1; it is characterized in that the upper and lower brachium pontis of described MOSFET driver module is equipped with gate protection circuit; described gate protection circuit is made up of voltage stabilizing didoe and resistor coupled in parallel; the input of described gate protection circuit is connected with the high and low end of gate drive signal respectively, between the gate drive circuit that the output of gate protection circuit is connected across MOSFET pipe and source electrode.
3. permanent-magnet brushless DC electric machine driver module according to claim 1, it is characterized in that described MOSFET driver module adopts gate driver circuit, the upper and lower brachium pontis input signal of described gate driver circuit is that PWM interlocks drive singal, drive singal is exported by the gate logic of governor circuit, is coupled together by soft arranging wire and gate driver circuit.
4. permanent-magnet brushless DC electric machine driver module according to claim 3, is characterized in that described gate driver circuit is made up of reverse driven and gate-drive resistant series, a gate drive circuit output backward diode in parallel with driving power positive pole.
5. the permanent-magnet brushless DC electric machine driver module according to claim 1 or 2 or 3 or 4, it is characterized in that the output of described upper brachium pontis and lower brachium pontis is parallel with Absorption Capacitance, the capacitance of described Absorption Capacitance is determined according to the size of MOSFET module bus bar stray inductance.
6. permanent-magnet brushless DC electric machine driver module according to claim 5, is characterized in that described Absorption Capacitance is thin-film capacitor.
7. permanent-magnet brushless DC electric machine driver module according to claim 6, is characterized in that described MOSFET pipe, gate protection circuit and gate driver circuit are welded on one piece of aluminium base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410190344.3A CN104539199A (en) | 2014-05-07 | 2014-05-07 | Driving module of permanent magnet brushless direct current motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410190344.3A CN104539199A (en) | 2014-05-07 | 2014-05-07 | Driving module of permanent magnet brushless direct current motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104539199A true CN104539199A (en) | 2015-04-22 |
Family
ID=52854686
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410190344.3A Pending CN104539199A (en) | 2014-05-07 | 2014-05-07 | Driving module of permanent magnet brushless direct current motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104539199A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104883073A (en) * | 2015-06-01 | 2015-09-02 | 南车株洲电力机车研究所有限公司 | Multi-module parallel output current-sharing current transformer |
| CN108020700A (en) * | 2017-11-28 | 2018-05-11 | 国网上海市电力公司 | An a kind of bleeder mechanism for transient overvoltage monitoring system |
-
2014
- 2014-05-07 CN CN201410190344.3A patent/CN104539199A/en active Pending
Non-Patent Citations (1)
| Title |
|---|
| 陈毓辉: "功率MOS管并联方法的研究", 《自动化技术与应用》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104883073A (en) * | 2015-06-01 | 2015-09-02 | 南车株洲电力机车研究所有限公司 | Multi-module parallel output current-sharing current transformer |
| CN108020700A (en) * | 2017-11-28 | 2018-05-11 | 国网上海市电力公司 | An a kind of bleeder mechanism for transient overvoltage monitoring system |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150422 |