CN109274311B - Motor controller circuit - Google Patents
Motor controller circuit Download PDFInfo
- Publication number
- CN109274311B CN109274311B CN201810479329.9A CN201810479329A CN109274311B CN 109274311 B CN109274311 B CN 109274311B CN 201810479329 A CN201810479329 A CN 201810479329A CN 109274311 B CN109274311 B CN 109274311B
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- phase
- bridge arm
- output terminal
- sampling unit
- electromotive force
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- 238000005070 sampling Methods 0.000 claims abstract description 60
- 239000003990 capacitor Substances 0.000 claims abstract description 25
- 238000004804 winding Methods 0.000 claims abstract description 3
- 238000000034 method Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000004907 flux Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
Classifications
-
- 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
- H02P25/00—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details
- H02P25/16—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the circuit arrangement or by the kind of wiring
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Ac Motors In General (AREA)
Abstract
The invention discloses a motor controller circuit, comprising: the positive bus, the negative bus, the bus capacitor, the U-phase bridge arm, the V-phase bridge arm and the W-phase bridge arm, wherein at least 2 phases of the U-phase bridge arm, the V-phase bridge arm and the W-phase bridge arm are respectively connected with a first sampling unit and a second sampling unit, the first sampling unit is connected to one terminal of a U-phase output terminal, a V-phase output terminal and a W-phase output terminal, and the second sampling unit is connected to one terminal of the rest 2 terminals of the U-phase output terminal, the V-phase output terminal and the W-phase output terminal; the inverting electromotive force output terminal of the first sampling unit and the inverting electromotive force output terminal of the second sampling unit are both connected to a processor for calculating a difference between a relative negative bus back electromotive force from the first sampling unit and a relative negative bus back electromotive force of the second sampling unit. According to the invention, the current motor stator winding temperature is obtained according to the 2-phase counter electromotive force difference value, and the model of the permanent magnet motor is corrected according to the difference of the motor stator temperatures, so that the control performance of the motor is improved.
Description
Technical Field
The invention belongs to the technical field of permanent magnet motors for electric automobiles, and particularly relates to a motor controller circuit.
Background
The motor controller is a core part of the electric automobile, and is generally provided with a battery power input wiring terminal and a wiring terminal connected with the motor. Because the motor can change the magnetic field of the rotor at different temperatures, the motor control performance is affected, and in the prior art, the influence of the change of the motor temperature on the rotor flux linkage is not considered. How to overcome the above technical problems is a direction of efforts of those skilled in the art.
Disclosure of Invention
The invention aims to provide a motor controller circuit, which can detect the counter electromotive force of a rotor of a permanent magnet motor according to different temperatures of the motor, correct a model of the permanent magnet motor and improve the control performance of the motor.
In order to achieve the above purpose, the invention adopts the following technical scheme: a motor controller circuit comprising: the positive bus, the negative bus, the bus capacitor, the U-phase bridge arm, the V-phase bridge arm and the W-phase bridge arm are respectively connected between the positive bus and the negative bus in a bridging way;
the U-phase bridge arm further comprises a U-phase upper bridge arm and a U-phase lower bridge arm, and a U-phase output terminal used for being connected with a U-phase terminal of the motor is positioned at a joint of the U-phase upper bridge arm and the U-phase lower bridge arm;
the V-phase bridge arm further comprises a V-phase upper bridge arm and a V-phase lower bridge arm, and a V-phase output terminal used for being connected with a V-phase terminal of the motor is positioned at a joint of the V-phase upper bridge arm and the V-phase lower bridge arm;
the W-phase bridge arm further comprises a W-phase upper bridge arm and a W-phase lower bridge arm, a W-phase output terminal used for being connected with a W-phase terminal of the motor is positioned at the joint of the W-phase upper bridge arm and the W-phase lower bridge arm, and IGBT modules are arranged on the U-phase upper bridge arm, the U-phase lower bridge arm, the V-phase upper bridge arm, the V-phase lower bridge arm, the W-phase upper bridge arm and the W-phase lower bridge arm;
at least 2 phases of the U-phase bridge arm, the V-phase bridge arm and the W-phase bridge arm are respectively connected with a first sampling unit and a second sampling unit, the first sampling unit is connected to one terminal of the U-phase output terminal, the V-phase output terminal and the W-phase output terminal, and the second sampling unit is connected to one terminal of the remaining 2 terminals of the U-phase output terminal, the V-phase output terminal and the W-phase output terminal;
the first sampling unit and the second sampling unit further comprise a first voltage dividing resistor, a second voltage dividing resistor and an RC branch which is connected in parallel with the second voltage dividing resistor and is formed by connecting a third resistor and a capacitor in series, and an inverting electromotive force output terminal for outputting counter electromotive force relative to a negative bus is arranged at a joint between the third resistor and the capacitor;
the inverting electromotive force output terminal of the first sampling unit and the inverting electromotive force output terminal of the second sampling unit are both connected to a processor, and the processor is used for calculating the difference value of the counter electromotive force of the relative negative bus from the first sampling unit and the counter electromotive force of the relative negative bus from the second sampling unit.
The further improvement scheme in the technical scheme is as follows:
1. in the above scheme, the first sampling unit is connected to the U-phase output terminal, and a junction between the third resistor and the capacitor of the first sampling unit is used for outputting the counter electromotive force of the U relative to the negative bus.
2. In the above scheme, the second sampling unit is connected to the V-phase output terminal, and a junction between the third resistor and the capacitor of the second sampling unit is used for outputting the counter electromotive force of the V-phase negative bus.
3. In the scheme, the IGBT module is formed by connecting a diode and an IGBT device in parallel.
4. In the scheme, one end of the second voltage dividing resistor, which is opposite to the first voltage dividing resistor, is connected to the negative bus.
5. In the above scheme, one end of the capacitor in the RC branch opposite to the third resistor is connected to the negative bus.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages:
the motor controller circuit is connected to a processor through the inverted electromotive force output terminal of the first sampling unit and the inverted electromotive force output terminal of the second sampling unit in the motor operation process, and the processor is used for calculating the difference value of the counter electromotive force of the relative negative bus from the first sampling unit and the counter electromotive force of the relative negative bus of the second sampling unit, obtaining the current motor stator winding temperature according to the 2-phase counter electromotive force difference value, and the hardware circuit can detect the rotor counter electromotive force of the permanent magnet motor according to the difference of the motor stator temperatures, correct the model of the permanent magnet motor and improve the control performance of the motor.
Drawings
FIG. 1 is a schematic diagram of a partial electrical structure of a motor controller circuit according to the present invention;
FIG. 2 is a schematic diagram of a partial electrical structure of a motor controller circuit according to the present invention;
FIG. 3 is a schematic diagram of the electrical structure of the sampling unit in the motor controller circuit of the present invention;
fig. 4 is a partial schematic view of a motor controller according to the present invention.
In the above figures: 1. a positive electrode bus; 2. a negative electrode bus; 3. a bus capacitor; 4. u-phase bridge arm; 41. u-phase upper bridge arm; 42. u-phase lower bridge arm; 43. a U-phase output terminal; 5. v-phase bridge arm; 51. v-phase upper arm; 52. v-phase lower bridge arm; 53. a V-phase output terminal; 6. a W-phase bridge arm; 61. w-phase upper bridge arm; 62. w phase lower bridge arm; 63. a W-phase output terminal; 7. a first sampling unit; 8. a second sampling unit; 9. a first voltage dividing resistor; 10. a second voltage dividing resistor; 11. a third resistor; 12. a capacitor; 13. an inverted electromotive force output terminal; 14. a processor.
Detailed Description
The invention is further described below with reference to the accompanying drawings and examples:
examples: a motor controller circuit comprising: the positive bus 1, the negative bus 2, the bus capacitor 3, the U-phase bridge arm 4, the V-phase bridge arm 5 and the W-phase bridge arm 6, wherein the bus capacitor 3, the U-phase bridge arm 4, the V-phase bridge arm 5 and the W-phase bridge arm 6 are respectively connected between the positive bus 1 and the negative bus 2 in a bridging manner;
the U-phase bridge arm 4 further comprises a U-phase upper bridge arm 41 and a U-phase lower bridge arm 42, and a U-phase output terminal 43 used for being connected with a U-phase terminal of the motor is positioned at a joint of the U-phase upper bridge arm 41 and the U-phase lower bridge arm 42;
the V-phase bridge arm 5 further comprises a V-phase upper bridge arm 51 and a V-phase lower bridge arm 52, and a V-phase output terminal 53 used for being connected with a V-phase terminal of the motor is positioned at a joint of the V-phase upper bridge arm 51 and the V-phase lower bridge arm 52;
the W-phase bridge arm 6 further includes a W-phase upper bridge arm 61 and a W-phase lower bridge arm 62, a W-phase output terminal 63 for connecting with a W-phase terminal of the motor is located at a junction of the W-phase upper bridge arm 61 and the W-phase lower bridge arm 62, and IGBT modules are respectively provided on the U-phase upper bridge arm 41, the U-phase lower bridge arm 42, the V-phase upper bridge arm 51, the V-phase lower bridge arm 52, the W-phase upper bridge arm 61 and the W-phase lower bridge arm 62;
at least 2 phases of the U-phase bridge arm 4, the V-phase bridge arm 5 and the W-phase bridge arm 6 are respectively connected with a first sampling unit 7 and a second sampling unit 8, the first sampling unit 7 is connected to one terminal of the U-phase output terminal 43, the V-phase output terminal 53 and the W-phase output terminal 63, and the second sampling unit 8 is connected to one terminal of the remaining 2 terminals of the U-phase output terminal 43, the V-phase output terminal 53 and the W-phase output terminal 63;
the first sampling unit 7 and the second sampling unit 8 each further comprise a first voltage dividing resistor 9, a second voltage dividing resistor 10 and an RC branch which is connected in parallel with the second voltage dividing resistor 10 and is formed by connecting a third resistor 11 and a capacitor 12 in series, and an inverting electromotive force output terminal 13 for outputting counter electromotive force relative to a negative bus bar is arranged at a joint between the third resistor 11 and the capacitor 12;
the inverting electromotive force output terminal of the first sampling unit 7 and the inverting electromotive force output terminal of the second sampling unit 8 are both connected to a processor 14, where the processor 14 is configured to calculate a difference between the counter electromotive force of the relative negative bus from the first sampling unit 7 and the counter electromotive force of the relative negative bus from the second sampling unit 8.
The first sampling unit 7 is connected to the U-phase output terminal 43, and the junction between the third resistor 11 and the capacitor 12 of the first sampling unit 7 is used for outputting the counter electromotive force of the U relative to the negative bus.
The second sampling unit 8 is connected to the V-phase output terminal 53, and the junction between the third resistor 11 and the capacitor 12 of the second sampling unit 8 is used for outputting the counter electromotive force of the V-phase negative bus.
One end of the second voltage dividing resistor opposite to the first voltage dividing resistor is connected to the negative electrode bus bar 2.
One end of the capacitor in the RC branch opposite to the third resistor is connected to the negative bus 2.
The motor is in a power generation state, the bus capacitor is in a charging state, and charging current passes through the phase output terminal CLU (V), the freewheeling diode of the U (V) phase upper bridge U (V), the bus capacitor positive and negative (GNDL), and the freewheeling diode of the V (U) phase lower bridge to the V phase output terminal CLV (U). See fig. 1,2.
The sampling voltage signal CLU_AIN of the U-phase counter electromotive force CLU to the bus negative GNDL and the voltage sampling signal CLV_AIN of the V-phase counter electromotive force CLU to the bus negative GNDL are input to an AD port of the high-voltage MCU. Meanwhile, the peak voltage values of the voltage sampling signals CLU_AIN and CLV_AIN are not more than 5V; the power negative of the high-voltage MCU is the bus negative GNDL. See fig. 3,4.
The above embodiments are provided to illustrate the technical concept and features of the present invention and are intended to enable those skilled in the art to understand the content of the present invention and implement the same, and are not intended to limit the scope of the present invention. All equivalent changes or modifications made in accordance with the spirit of the present invention should be construed to be included in the scope of the present invention.
Claims (6)
1. A motor controller circuit comprising: the positive bus (1), the negative bus (2), the bus capacitor (3), the U-phase bridge arm (4), the V-phase bridge arm (5) and the W-phase bridge arm (6), wherein the bus capacitor (3), the U-phase bridge arm (4), the V-phase bridge arm (5) and the W-phase bridge arm (6) are respectively bridged between the positive bus (1) and the negative bus (2);
the U-phase bridge arm (4) further comprises a U-phase upper bridge arm (41) and a U-phase lower bridge arm (42), and a U-phase output terminal (43) used for being connected with a motor U-phase terminal is positioned at the joint of the U-phase upper bridge arm (41) and the U-phase lower bridge arm (42);
the V-phase bridge arm (5) further comprises a V-phase upper bridge arm (51) and a V-phase lower bridge arm (52), and a V-phase output terminal (53) used for being connected with a V-phase terminal of the motor is positioned at the joint of the V-phase upper bridge arm (51) and the V-phase lower bridge arm (52);
the W-phase bridge arm (6) further comprises a W-phase upper bridge arm (61) and a W-phase lower bridge arm (62), a W-phase output terminal (63) used for being connected with a W-phase terminal of the motor is positioned at the joint of the W-phase upper bridge arm (61) and the W-phase lower bridge arm (62), and IGBT modules are arranged on the U-phase upper bridge arm (41), the U-phase lower bridge arm (42), the V-phase upper bridge arm (51), the V-phase lower bridge arm (52), the W-phase upper bridge arm (61) and the W-phase lower bridge arm (62);
the method is characterized in that: at least 2 phases of the U-phase bridge arm (4), the V-phase bridge arm (5) and the W-phase bridge arm (6) are respectively connected with a first sampling unit (7) and a second sampling unit (8), the first sampling unit (7) is connected to one terminal of the U-phase output terminal (43), the V-phase output terminal (53) and the W-phase output terminal (63), and the second sampling unit (8) is connected to one terminal of the rest 2 terminals of the U-phase output terminal (43), the V-phase output terminal (53) and the W-phase output terminal (63);
the first sampling unit (7) and the second sampling unit (8) further comprise a first voltage dividing resistor (9), a second voltage dividing resistor (10) and an RC branch which is connected in parallel with the second voltage dividing resistor (10) and is formed by connecting a third resistor (11) and a capacitor (12) in series, and an inverted electromotive force output terminal (13) for outputting counter electromotive force relative to a negative bus is arranged at a joint between the third resistor (11) and the capacitor (12);
the inverting electromotive force output terminal of the first sampling unit (7) and the inverting electromotive force output terminal of the second sampling unit (8) are both connected to a processor (14), and the processor (14) is used for calculating the difference value between the counter electromotive force of the relative negative bus from the first sampling unit (7) and the counter electromotive force of the relative negative bus of the second sampling unit (8); according to the difference value of the 2-phase counter electromotive force, the current motor stator winding temperature is obtained, and according to the difference of the motor stator temperatures, a hardware circuit can detect the rotor counter electromotive force of the permanent magnet motor, correct the model of the permanent magnet motor and improve the control performance of the motor.
2. The motor controller circuit of claim 1 wherein: the first sampling unit (7) is connected to a U-phase output terminal (43), and a contact point between a third resistor (11) and a capacitor (12) of the first sampling unit (7) is used for outputting counter electromotive force of the U relative to the negative bus.
3. The motor controller circuit of claim 1 wherein: the second sampling unit (8) is connected to a V-phase output terminal (53), and a junction between a third resistor (11) and a capacitor (12) of the second sampling unit (8) is used for outputting a counter electromotive force of a V relative to a negative bus.
4. The motor controller circuit of claim 1 wherein: the IGBT module is formed by connecting a diode and an IGBT device in parallel.
5. The motor controller circuit of claim 1 wherein: one end of the second voltage dividing resistor, which is opposite to the first voltage dividing resistor, is connected to the negative bus (2).
6. The motor controller circuit of claim 1 wherein: one end of the RC branch, opposite to the third resistor, of the capacitor is connected to the negative bus (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810479329.9A CN109274311B (en) | 2018-05-18 | 2018-05-18 | Motor controller circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810479329.9A CN109274311B (en) | 2018-05-18 | 2018-05-18 | Motor controller circuit |
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| Publication Number | Publication Date |
|---|---|
| CN109274311A CN109274311A (en) | 2019-01-25 |
| CN109274311B true CN109274311B (en) | 2023-11-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810479329.9A Active CN109274311B (en) | 2018-05-18 | 2018-05-18 | Motor controller circuit |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11164580A (en) * | 1997-11-27 | 1999-06-18 | Toshiba Corp | Brushless motor driving equipment |
| JP2002010677A (en) * | 2000-06-21 | 2002-01-11 | Hitachi Ltd | Motor-control unit |
| WO2015101164A1 (en) * | 2014-01-03 | 2015-07-09 | 国家电网公司 | Single-phase inverter test circuit for modular multi-level convertor and test method therefor |
| CN208272880U (en) * | 2018-05-18 | 2018-12-21 | 一巨自动化装备（上海）有限公司 | Electric machine controller circuit |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3502040B2 (en) * | 2000-12-27 | 2004-03-02 | 本田技研工業株式会社 | Brushless DC motor constant detection device, brushless DC motor control device, and brushless DC motor constant detection program |
| JP4019873B2 (en) * | 2001-10-12 | 2007-12-12 | 日産自動車株式会社 | Rudder angle ratio control device |
| EP3255957B1 (en) * | 2015-02-02 | 2019-08-28 | Foshan Shunde Midea Electrical Heating Appliances Manufacturing Co., Ltd. | Electromagnetic heating control circuit and electromagnetic heating device |
| JP6333772B2 (en) * | 2015-05-27 | 2018-05-30 | ファナック株式会社 | Synchronous motor temperature estimation device |
-
2018
- 2018-05-18 CN CN201810479329.9A patent/CN109274311B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11164580A (en) * | 1997-11-27 | 1999-06-18 | Toshiba Corp | Brushless motor driving equipment |
| JP2002010677A (en) * | 2000-06-21 | 2002-01-11 | Hitachi Ltd | Motor-control unit |
| WO2015101164A1 (en) * | 2014-01-03 | 2015-07-09 | 国家电网公司 | Single-phase inverter test circuit for modular multi-level convertor and test method therefor |
| CN208272880U (en) * | 2018-05-18 | 2018-12-21 | 一巨自动化装备（上海）有限公司 | Electric machine controller circuit |
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| Publication number | Publication date |
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| CN109274311A (en) | 2019-01-25 |
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