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Simulation and Realization on Control Strategies of Permanent Magnet Synchronous Machines in Direct Drive System

Author: ZhaoXiaoZuo
Tutor: FengXiaoYun
School: Southwest Jiaotong University
Course: Proceedings of the
Keywords: Direct drive Permanent magnet synchronous motors Electric vehicles Field oriented vector control Direct Torque Control Constant speed control Double Hysteresis adjustment
CLC: TM341
Type: Master's thesis
Year: 2009
Downloads: 482
Quote: 5
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Abstract


The direct drive control system , the permanent magnet synchronous motor with small size , light weight ; high power factor , high efficiency ; simple control, high reliability , and became a direct-drive hot area of ??research . Therefore , the permanent magnet synchronous motor control strategy to become a new research topic . The thesis field oriented vector control of permanent magnet synchronous motor technology and direct torque control technology , specific research . And the structure is simple , fast dynamic response of direct torque control mode to simulate to reproduce electric vehicle drive system characteristics . Thesis direct drive permanent magnet synchronous motor control strategy for the study , a more in-depth study of its design and control performance . Starting from the basic structure of the three-phase permanent magnet synchronous motor , the establishment of the mathematical model of the motor . The basic principle , and on the basis of theoretical analysis , using Matlab / Simulink tools to build a permanent magnet synchronous motor field oriented vector control and direct torque control of permanent magnet synchronous motor field oriented vector control and direct torque control the simulation model of the system , and analysis of simulation results . Electric vehicle traction characteristics , to build the the analog electric vehicles directly driven simulation system , in accordance with the electric vehicle traction characteristics , issued by the torque and flux instruction , designed to replace the traditional Double Hysteresis adjustable speed controller PI regulator , preventing torque in the traction control mode switching , and the greater impact of the magnetic flux . Based on the simulation of permanent magnet synchronous motor direct torque control system simulation reproduces the operating characteristics of the electric vehicle . Based on the theoretical research and simulation analysis , the use of two -level inverter experimental platform to introduce the main circuit and control circuit of the hardware platform , given software control algorithm to achieve a permanent magnet synchronous motor direct torque control , closed - loop experiments .

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CLC: > Industrial Technology > Electrotechnical > Motor > AC motor > Synchronous motor
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