The Research On PMSM Controller For Pure Electric Vehicles

With economic development, oil and coal as the main energy supply, Such large-scale use of renewable energy, causing serious pollution to the atmospheric environment, pure electric vehicles have a significant advantage of the green non-polluting, and its prospects are very broad.This article select the permanent magnet synchronous motor as the drive motor of the electric vehicle, conduct in-depth research on permanent magnet synchronous motor speed control system based on TMS320F2812Core chip. Main contents and innovations are as follows:1. This paper first introduces the origin and development of permanent magnet synchronous motor, provides an overview of the domestic and foreign permanent magnet synchronous motor controller Research;2. build a mathematical model based on the structure and characteristics of the permanent magnet synchronous motor, comparative analysis of a variety of vector control strategy selected id=0vector control strategies used in this article;3. In order to improve system speed performance, in this paper, sliding mode variable structure control, fuzzy control and iterative learning algorithm is analyzed, design speed sensorless vector control system based on fuzzy sliding mode iterative learning controller and sliding mode observer. This paper designs the hardware and software of the governing system, and verified;4. The experimental results show that the sliding mode observer can accurately estimate the rotor speed, use its estimate of the speed sensorless vector control system has good dynamic and static speed performance, verify the feasibility of the program in practice.