CN108258947A - The method that electric vehicle motor controller inhibits high-frequency noise - Google Patents
The method that electric vehicle motor controller inhibits high-frequency noise Download PDFInfo
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- CN108258947A CN108258947A CN201611235387.4A CN201611235387A CN108258947A CN 108258947 A CN108258947 A CN 108258947A CN 201611235387 A CN201611235387 A CN 201611235387A CN 108258947 A CN108258947 A CN 108258947A
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- Prior art keywords
- frequency
- motor
- switching frequency
- drive module
- electric machine
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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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
- B60L15/20—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
-
- 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
- H02P6/10—Arrangements for controlling torque ripple, e.g. providing reduced torque ripple
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
Abstract
The invention discloses a kind of method that electric vehicle motor controller inhibits high-frequency noise, electric machine controller receives the torque command signal of motor and acquires the tach signal of motor in this method；According to the switching frequency of torque and tach signal setting IGBT drive module；In the slow-speed of revolution section less than 500r/min,It is set as low carrier switching frequency；In 500~6000r/min speed stages, when torque command is less than 100Nm,It is set as fixed carrier switching frequency, otherwiseIt is set as random carrier switch frequency；In 6000~12000r/min speed stages, when torque command is less than 60Nm,It is set as fixed carrier switching frequency, otherwiseIt is set as random carrier switch frequency.This method inhibits high-frequency noise according to motor speed and the switching frequency of torque signals control IGBT drive module, without increasing additional cost, effectively increases full-vehicle control performance and the riding experience of user.
Description
Technical field
The present invention relates to the control fields of motor control system of electric automobile more particularly to a kind of motor in electric automobile to control
The method that device inhibits high-frequency noise.
Background technology
The vehicles of the electric vehicle as sustainable development are just being more and more users and institute of automobile production manufacturer
Pay attention to.And electric motor and controller system is the critical component of electric vehicle, is the heart of electric vehicle, including motor, motor
Controller and corresponding control strategy.The safety of operation situation direct relation vehicle of motor and the riding body of user
It tests, in some cases, electric machine controller and motor can generate high-frequency noise in the course of work, especially in the acceleration of vehicle urgency or height
It is particularly evident when rotating speed, full-vehicle control performance is seriously affected, and occupant is had some impact on, for this situation,
Control strategy need to be optimized to inhibit high-frequency noise.
High-frequency noise is mainly caused by the switching frequency of electric machine controller IGBT drive module, the electricity of electric vehicle driving at present
Machine using permanent magnet synchronous motor, has many advantages, such as that power density is big, geometric dimension is small, efficient mostly.But due to motor gas
The reasons such as the distortion in gap magnetic field and IGBT drive module are non-linear contain a large amount of higher hamonic wave, harmonic wave electricity in current of electric
Stream can increase the iron loss and copper loss of motor, make that the motor feels hot, increase high-frequency noise.When IGBT drive module drives in entire motor
When process uses fixed switching frequency, these higher hamonic waves will focus on fixed frequency range, and with larger frequency
Spectrum peak, the high-frequency noise for leading to a certain speed stage of motor are particularly evident.
Invention content
The technical problems to be solved by the invention are to provide the side that a kind of electric vehicle motor controller inhibits high-frequency noise
Method, this method inhibit high-frequency noise according to motor speed and the switching frequency of torque signals control IGBT drive module, without
Increase additional cost, effectively increase full-vehicle control performance and the riding experience of user.
In order to solve the above technical problems, electric vehicle motor controller of the present invention inhibits the method for high-frequency noise including as follows
Step：
Step 1: electric machine controller receives the motor torque command signal from entire car controller, and pass through rotary transformer
Acquire the tach signal of motor；
Step 2: when motor speed is 0~500r/min, electric machine controller sets the switching frequency of IGBT drive module
Carrier switch frequency for IGBT pipes, expression formula is：
（1）
Formula（1）InValue be 2~3KHz；
Step 3: when motor speed is 500~6000r/min and motor torque order is less than 100Nm, electric machine controller is set
Determine the switching frequency of IGBT drive moduleCarrier switch frequency for IGBT pipes, expression formula is：
（2）
Formula（2）InValue be 5~6KHz；
Step 4: when motor speed is 500~6000r/min and motor torque order is more than 100Nm, electric machine controller is set
Determine the switching frequency of IGBT drive moduleFor the carrier switch frequency changed at random of IGBT pipes, expression formula is：
（3）
Formula（3）InFor between ［ -1,1 ］ equally distributed random number, the i.e. value of K change at random between -1 and 1,
Frequency band for the variation of carrier switch frequency；
Step 5: when motor speed is 6000~12000r/min and motor torque order is less than 60Nm, electric machine controller is set
Determine the switching frequency of IGBT drive moduleFixed carrier switching frequency for IGBT pipes, expression formula is：
（4）
Formula（4）InValue be 6~7KHz；
Step 6: when motor speed is 6000~12000r/min and motor torque order is more than 60Nm, electric machine controller is set
Determine the switching frequency of IGBT drive moduleFor the carrier switch frequency changed at random of IGBT pipes, expression formula is：
（5）
Formula（5）InFor between ［ -1,1 ］ equally distributed random number, the i.e. value of K change at random between -1 and 1,
Frequency band for the variation of carrier switch frequency.
Since electric vehicle motor controller of the present invention inhibits the method for high-frequency noise to employ above-mentioned technical proposal, i.e. this method
Middle electric machine controller receives the torque command signal of motor and acquires the tach signal of motor；It is set according to torque and tach signal
The switching frequency of IGBT drive module；In the slow-speed of revolution section less than 500r/min,It is set as low carrier switching frequency；500
~6000r/min speed stages, when torque command is less than 100Nm,It is set as fixed carrier switching frequency, otherwiseBe set as with
Airborne wave switching frequency；In 6000~12000r/min speed stages, when torque command is less than 60Nm,It is set as fixed carrier to open
Frequency is closed, otherwiseIt is set as random carrier switch frequency.This method is according to motor speed and torque signals control IGBT drivings
The switching frequency of module inhibits high-frequency noise, without increasing additional cost, effectively increases full-vehicle control performance and user
Riding experience.
Description of the drawings
The present invention is described in further detail with embodiment below in conjunction with the accompanying drawings：
Fig. 1 is the method flow block diagram that electric vehicle motor controller of the present invention inhibits high-frequency noise.
Specific embodiment
Embodiment is as shown in Figure 1, electric vehicle motor controller of the present invention inhibits the method for high-frequency noise to include following step
Suddenly：
Step 1: electric machine controller receives the motor torque command signal from entire car controller, and pass through rotary transformer
Acquire the tach signal of motor；
Step 2: when motor speed is 0~500r/min, electric machine controller sets the switching frequency of IGBT drive module
Carrier switch frequency for IGBT pipes, expression formula is：
（1）
Formula（1）InValue be 2~3KHz；
Step 3: when motor speed is 500~6000r/min and motor torque order is less than 100Nm, electric machine controller is set
Determine the switching frequency of IGBT drive moduleCarrier switch frequency for IGBT pipes, expression formula is：
（2）
Formula（2）InValue be 5~6KHz；
Step 4: when motor speed is 500~6000r/min and motor torque order is more than 100Nm, electric machine controller is set
Determine the switching frequency of IGBT drive moduleFor the carrier switch frequency changed at random of IGBT pipes, expression formula is：
（3）
Formula（3）InFor between ［ -1,1 ］ equally distributed random number, the i.e. value of K change at random between -1 and 1,
Frequency band for the variation of carrier switch frequency；
Step 5: when motor speed is 6000~12000r/min and motor torque order is less than 60Nm, electric machine controller is set
Determine the switching frequency of IGBT drive moduleFixed carrier switching frequency for IGBT pipes, expression formula is：
（4）
Formula（4）InValue be 6~7KHz；
Step 6: when motor speed is 6000~12000r/min and motor torque order is more than 60Nm, electric machine controller is set
Determine the switching frequency of IGBT drive moduleFor the carrier switch frequency changed at random of IGBT pipes, expression formula is：
（5）
Formula（5）InFor between ［ -1,1 ］ equally distributed random number, the i.e. value of K change at random between -1 and 1,
Frequency band for the variation of carrier switch frequency.
High-frequency noise interference source is mainly caused by following two aspects of IGBT drive module：During the Reverse recovery of diode
Between caused interference and IGBT the pipes harmonic wave interference that generates when working, therefore in the entire speed stage of motor, when IGBT drives mould
When block uses fixed switching frequency, concentration of the energy in particular frequency range is caused interference with, generates high-frequency noise.This method according to
According to the basic reason that high-frequency noise generates, the rotating speed for receiving the torque command signal of motor by electric machine controller and acquiring motor is believed
Number, it segments motor speed region and with reference to torque command, then controls IGBT drive module that will be done using different switching frequencies
Power dissipation is disturbed on wider frequency band, then can achieve the purpose that reduce noise spectrum peak value, so as to reduce high-frequency noise,
High-frequency noise is reduced by disperseing the method for harmonic wave；The higher hamonic wave in current of electric is reduced simultaneously, avoids current waveform
It is distorted, plays the role of inhibiting high-frequency noise, and avoid motor torque ripple, improve full-vehicle control performance and user multiplies
With experience.This method implementation is simple and reliable, and treatment measures are mainly taken from control strategy, are matched without largely changing vehicle
It puts, it is easy to implement, and additional hardware cost need not be increased.
Claims (1)
1. a kind of method that electric vehicle motor controller inhibits high-frequency noise, it is characterised in that this method includes the following steps：
Step 1: electric machine controller receives the motor torque command signal from entire car controller, and pass through rotary transformer
Acquire the tach signal of motor；
Step 2: when motor speed is 0~500r/min, electric machine controller sets the switching frequency of IGBT drive moduleFor
The carrier switch frequency of IGBT pipes, expression formula is：
（1）
Formula（1）InValue be 2~3KHz；
Step 3: when motor speed is 500~6000r/min and motor torque order is less than 100Nm, electric machine controller is set
Determine the switching frequency of IGBT drive moduleCarrier switch frequency for IGBT pipes, expression formula is：
（2）
Formula（2）InValue be 5~6KHz；
Step 4: when motor speed is 500~6000r/min and motor torque order is more than 100Nm, electric machine controller is set
Determine the switching frequency of IGBT drive moduleFor the carrier switch frequency changed at random of IGBT pipes, expression formula is：
（3）
Formula（3）InFor between ［ -1,1 ］ equally distributed random number, the i.e. value of K change at random between -1 and 1,
Frequency band for the variation of carrier switch frequency；
Step 5: when motor speed is 6000~12000r/min and motor torque order is less than 60Nm, electric machine controller is set
Determine the switching frequency of IGBT drive moduleFixed carrier switching frequency for IGBT pipes, expression formula is：
（4）
Formula（4）InValue be 6~7KHz；
Step 6: when motor speed is 6000~12000r/min and motor torque order is more than 60Nm, electric machine controller is set
Determine the switching frequency of IGBT drive moduleFor the carrier switch frequency changed at random of IGBT pipes, expression formula is：
（5）
Formula（5）InFor between ［ -1,1 ］ equally distributed random number, the i.e. value of K change at random between -1 and 1,
Frequency band for the variation of carrier switch frequency.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611235387.4A CN108258947A (en) | 2016-12-28 | 2016-12-28 | The method that electric vehicle motor controller inhibits high-frequency noise |
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|---|---|---|---|
| CN201611235387.4A CN108258947A (en) | 2016-12-28 | 2016-12-28 | The method that electric vehicle motor controller inhibits high-frequency noise |
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| CN108258947A true CN108258947A (en) | 2018-07-06 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109150059A (en) * | 2018-09-05 | 2019-01-04 | 北京新能源汽车股份有限公司 | A kind of control method and device of drive motor controller |
| CN110588628A (en) * | 2019-08-21 | 2019-12-20 | 台州滨海吉利发动机有限公司 | BSG motor noise optimization method and system and vehicle |
| CN110661470A (en) * | 2019-10-24 | 2020-01-07 | 合肥巨一动力系统有限公司 | NVH vibration noise optimization method based on PWM frequency jitter algorithm |
| CN112172527A (en) * | 2020-09-28 | 2021-01-05 | 重庆长安新能源汽车科技有限公司 | IGBT temperature protection frequency conversion control method for electric automobile |
| CN113002322A (en) * | 2021-03-24 | 2021-06-22 | 湖南工程学院 | NVH (noise, vibration and harshness) suppression device and method for electric vehicle carrying automatic transmission |
| CN114228508A (en) * | 2021-12-22 | 2022-03-25 | 江西五十铃汽车有限公司 | IGBT module carrier frequency adjusting method and device, storage medium and equipment |
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| CN101206242A (en) * | 2007-12-19 | 2008-06-25 | 湖南大学 | Method for controlling voltage and frequency of FM resonance type extra-high voltage test power supply |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109150059A (en) * | 2018-09-05 | 2019-01-04 | 北京新能源汽车股份有限公司 | A kind of control method and device of drive motor controller |
| CN110588628A (en) * | 2019-08-21 | 2019-12-20 | 台州滨海吉利发动机有限公司 | BSG motor noise optimization method and system and vehicle |
| CN110588628B (en) * | 2019-08-21 | 2020-11-17 | 台州滨海吉利发动机有限公司 | BSG motor noise optimization method and system and vehicle |
| CN110661470A (en) * | 2019-10-24 | 2020-01-07 | 合肥巨一动力系统有限公司 | NVH vibration noise optimization method based on PWM frequency jitter algorithm |
| CN110661470B (en) * | 2019-10-24 | 2021-10-15 | 合肥巨一动力系统有限公司 | NVH vibration noise optimization method based on PWM frequency jitter algorithm |
| CN112172527A (en) * | 2020-09-28 | 2021-01-05 | 重庆长安新能源汽车科技有限公司 | IGBT temperature protection frequency conversion control method for electric automobile |
| CN112172527B (en) * | 2020-09-28 | 2022-05-03 | 重庆长安新能源汽车科技有限公司 | IGBT temperature protection frequency conversion control method for electric automobile |
| CN113002322A (en) * | 2021-03-24 | 2021-06-22 | 湖南工程学院 | NVH (noise, vibration and harshness) suppression device and method for electric vehicle carrying automatic transmission |
| CN114228508A (en) * | 2021-12-22 | 2022-03-25 | 江西五十铃汽车有限公司 | IGBT module carrier frequency adjusting method and device, storage medium and equipment |
| CN114228508B (en) * | 2021-12-22 | 2023-12-29 | 江西五十铃汽车有限公司 | IGBT module carrier frequency adjusting method, device, storage medium and equipment |
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Application publication date: 20180706 |
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