2020年04月27日
Characteristics of motor control system
The main features and functions of the motor drive system:
As one of the three core components of electric vehicles, the motor drive system is the main actuator of the vehicle, which plays a decisive role in the main performance indicators of the vehicle. The motor drive system directly affects the comfort, power and economy of the vehicle.
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Three-phase AC permanent magnet motor (DM) and motor controller (MCU) can be used to adjust the output current and motor speed. The motor and motor controller use water cooling to prevent excessive temperature.
The vehicle controller (VCU) should be able to issue various operation commands according to the driver's intention. The motor controller completes the response and provides feedback in order to adjust the output of the drive motor in real time and realize the various driving functions of the vehicle.
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The main function of the motor controller (MCU) is to perform real-time status and fault detection of the drive motor system and to perform communication and protection and fault feedback, which is another important function of the motor controller.
Drive motor development trend 5.1 Integration, in terms of motor: the motor can be integrated with the engine, transmission assembly and controller to the greatest extent.
In terms of controllers: more and more power electronic assemblies (controllers, power devices, sensors, power supplies, etc.) will be introduced, which is also the trend of future batch, generalization, and modular development.
permanent magnetization
Drive control system using vector control to achieve a wider speed range. permanent magnet motor has the advantages of high torque density and power density, large specific power, high efficiency, high power factor, high reliability and easy maintenance. permanent magnetization will become one of the important directions of motor development.
Digitizing
The use of software to the greatest extent replaces the hardware part to achieve functions such as communication, diagnosis, protection, and monitoring. Digitization of the control system is an inevitable trend in the development of motor drive technology.
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