Motor controller has been used in traditional automobile's on-board motor. Through power semiconductor, microprocessor and other power electronic devices, the function of adjusting and controlling automotive air-conditioning compressor, steering boost pump motor, etc. is achieved by using low and medium voltage frequency conversion.As a device to control the drive motor of an electric vehicle, the motor controller of an electric vehicle receives control information from the vehicle controller and the control mechanism (brake pedal, throttle pedal, shift mechanism), controls the speed, torque and turn of the drive motor, and controls the output of the power battery accordingly.
At present, some "multi-in-one" electronic products have been put into use in electric vehicles, while integrating the traditional discrete air compressor, steering boost pump motor, air pump motor controller, and BSG/ISG motor used in hybrid vehicle models.With the wide application of microchip in vehicle and assembly control, the cost of multi-in-one electronic control products is expected to further reduce, and single controller will be gradually replaced by integrated "vehicle central controller".
Electronic control system plays a central role in new energy automobiles
The design and calibration of the electronic control system are highly related to the motor system. According to the different matching motors, the electronic control system needs to develop different technical platforms.Early DC motors were generally controlled by pulse width modulation (PWM) chopping control, which was relatively simple and had limitations in application.With the large use of induction motor and permanent magnet motor, the complexity of electronic control system increases rapidly. Vector control technology and direct torque control technology become the mainstream technology of electronic control products. The popularization of electric bus requires more and more integration of motor and electronic control system.It is foreseeable that in the future, the degree of business intersection between motor and electronic control enterprises will gradually increase, and enterprises that can provide integrated power assembly products of motor and electronic control will be helpful
It will be more competitive for the whole vehicle enterprise to further reduce vehicle weight and cost.
.png)
