An Improved Estimation Method of Permanent Magnet Synchronous Motor without Position Sensor

2010 ◽  
Vol 159 ◽  
pp. 616-621
Author(s):  
Hua Qiang Zhang ◽  
Xin Sheng Wang ◽  
Fei Fei Wang
Keyword(s):  
Vector Control ◽  
Permanent Magnet ◽  
Permanent Magnet Synchronous Motor ◽  
Estimation Method ◽  
Synchronous Motor ◽  
Dynamic State ◽  
Position Sensor ◽  
Estimate Method ◽  
Vector Control System ◽  
Model Reference Adaptive

On the basis of interior electromagnetism relationship and vector control principle, the vector control system of Permanent Magnet Synchronous Motor (PMSM) without position sensor is designed. There are two main identification methods are introduced to estimate the position and speed of PMSM. One scheme is based on the back Electromotive Force (EMF) and the other is Model Reference Adaptive Standard (MRAS). The former method achieves fast dynamic-state response while the later method obtains better steady-state performance. According to both of them advantages, an improved estimate method which combining the back EMF and the MARS is proposed. Simulation results show that the improved method is feasible and stable.

Design and Implementation of Sensorless Vector Control System for Permanent Magnet Synchronous Motor

2014 ◽  
Vol 960-961 ◽  
pp. 1183-1188
Author(s):  
Sheng Wen Fan ◽  
Dong Liu ◽  
Zheng Xi Li ◽  
Ze Ting Wang ◽  
Peng Wang
Keyword(s):  
Control System ◽  
Vector Control ◽  
Permanent Magnet ◽  
Permanent Magnet Synchronous Motor ◽  
Estimation Method ◽  
Synchronous Motor ◽  
Position Estimation ◽  
Experimental Result ◽  
Sensorless Vector Control ◽  
Vector Control System

This paper will introduce the sensorless vector control system of permanent magnet synchronous motor,it adopts the PLL structure to correct motor back electromotive force for the motor rotor speed/position estimation and vector control algorithm to realize speed and current loop control of PMSM.This paper established a mathematical model of the PMSM,design of system software and hardware,the principle of speed/position estimation method and simulation of system in Matlab/Simulink.Finally,it introduces the experiment of whole system in TMS320F2808-based PMSM experiment platform,the simulation and experimental result verify feasibility,fast response and practicability of the system.

Space Vector Control of Permanent Magnet Synchronous Motor Based on 60o Coordinate System

2015 ◽  
Vol 740 ◽  
pp. 343-346
Author(s):  
Jia Xian Li
Keyword(s):  
Control System ◽  
Coordinate System ◽  
Vector Control ◽  
Permanent Magnet ◽  
Permanent Magnet Synchronous Motor ◽  
Synchronous Motor ◽  
Space Vector ◽  
Field Orientation ◽  
Speed Regulator ◽  
Vector Control System

Permanent magnet synchronous motor mathematical models of synchronous rotating coordinate system are decoupled by rotor field orientation. Then, the speed regulator, current regulator and space vector control system are designed. The current inner ring and speed outer ring ensure the accurate tracking of current and the accurate control of speed. To reduce the control algorithm computation, SVPWM control strategy based on the 60o coordinate system is used on the permanent magnet synchronous motor control system. Simulation results show that the space vector control system has good dynamic characteristics and the control scheme is feasible.

Sensorless Vector Control System Design of Permanent Magnet Synchronous Motor

2013 ◽  
Vol 302 ◽  
pp. 752-758
Author(s):  
Zong Liang Liu ◽  
Hui Bin Ao
Keyword(s):  
Control System ◽  
Vector Control ◽  
Permanent Magnet ◽  
Permanent Magnet Synchronous Motor ◽  
Synchronous Motor ◽  
Interface Circuits ◽  
Loop Control ◽  
Sensorless Vector Control ◽  
Mechanical Sensors ◽  
Vector Control System

In order to achieve closed-loop control，it is generally required to know the position and speed of the motor rotor through installed photoelectric encoder, rotary transformer and some other mechanical sensors on the rotor shaft . But these sensors increase the system cost and the interface circuits between the motor and the control system, and reduce the control accuracy and reliability of the system.This article designs a sensorless vector control system for permanent magnet synchronous motor, and introduces the hardware structure and the working principle of the system, and designs control circuit and vector control software based on IRMCF341 chip. The result of test shows that the system has a steady state performance and a high control precision. The motor runs well without the position sensor and at the same time achieves a much higher level of control performance.

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