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Motor controller of electric automobile and control method thereof

A motor controller, electric vehicle technology, applied in motor generator control, AC motor control, electronic commutation motor control, etc., can solve problems such as immaturity

Active Publication Date: 2012-07-11
CHERY AUTOMOBILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

That is, there are few motor controllers in the prior art, and none of them are mature

Method used

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  • Motor controller of electric automobile and control method thereof
  • Motor controller of electric automobile and control method thereof
  • Motor controller of electric automobile and control method thereof

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Experimental program
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Effect test

Embodiment Construction

[0040] The present invention will be described in detail below according to the accompanying drawings, which is a preferred embodiment among various implementations of the present invention.

[0041] 1. System structure

[0042] In this embodiment, the structural block diagram of the motor controller is as follows figure 1 As shown, it describes the composition and function of the entire system. The motor controller (MCU) mainly includes: single-chip microcomputer, inverter, sensor and peripheral interface circuit.

[0043] (1) The single-chip microcomputer is used to receive the instructions of the vehicle controller, process the control algorithm, and send information such as the status of the motor and inverter.

[0044] Receiving commands from the vehicle controller includes: motor operation mode, motor power supply enable, torque and other signal commands. Control algorithm processing includes: CAN bus interface, vector control, SVPWM, analog-to-digital conversion, sen...

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Abstract

The invention relates to a motor controller of electric automobile and control method thereof. According to technical requirement of permanent magnet motor for electric automobile, structure and method of the control system is determined, micro-controller of Infineon Technologies is adopted as the control chip considering cost and efficiency, motor control functions such as vector control, space vector pulse width modulation (SVPWM), A / D conversion (A / D) and failure diagnosis are completed. A whole vehicle controller requests signals including motor operation mode signal, torque instruction signal from the motor controller through a whole vehicle high-speed CAN (control area network). After analyzing and processing by the micro-controller, the control power device outputs corresponding current, thus the motor outputs corresponding steering and torque, and responds the current operation state to the whole vehicle controller, so that a motor control process is completed.

Description

technical field [0001] The invention relates to the field of automatic control, in particular to motor control for electric vehicles, in particular to a motor controller for electric vehicles and a control method thereof. Background technique [0002] In recent years, with the increasingly serious energy and environmental problems and the continuous development of automobile and electronic technology, electric vehicles powered by motors have gradually been recognized by everyone, and the market prospect is very huge. As the power source of electric vehicles, the motor is the core component of the power system, and its control effect has a very important impact on the performance of the vehicle. Permanent magnet synchronous motors, especially permanent magnet synchronous motors with embedded permanent magnets, have the advantages of fast response, low loss, and adjustable speed operation, and are more and more widely used in various fields including electric vehicles. At pre...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02P6/16H02P21/00H02P27/06B60L15/20B60L15/28
CPCY02T10/7241Y02T10/644Y02T10/642Y02T10/64Y02T10/72
Inventor 宋波罗晓陈立冲王瑛
Owner CHERY AUTOMOBILE CO LTD
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