Title :
Simple field weakening control for permanent magnet stepper motors without dq transformation
Author :
Lee, Youngwoo ; Kim, Wonhee ; Shin, Donghoon ; Chung, Chung Choo
Author_Institution :
Dept. of Electr. Eng., Hanyang Univ., Seoul, South Korea
Abstract :
In this paper, a simple field weakening control (FWC) without direct quadrature (DQ) transformation is proposed for position tracking of permanent magnet stepper motors (PMSMs). The proposed method consists of the PID controller for a torque modulation and a commutation scheme to achieve FWC without DQ transformation. In proposed commutation scheme, the desired negative direct current is designed to cancel the back-emf so that the required inputs can decreased. The commutation scheme is equivalent to microstepping where currents have time-varying amplitude over 0.5π electrical phase advance. For simple implementation, proportional integral (PI) current feedback was used to guarantee the desired current. Simulation results validate the performance of the proposed method.
Keywords :
electric current control; feedback; permanent magnet motors; stepping motors; three-term control; torque control; DQ transformation; PI current feedback; PID controller; commutation scheme; direct quadrature; microstepping; negative direct current; permanent magnet stepper motors; proportional integral derivative control; simple field weakening control; torque modulation; Commutation; DC motors; Motor drives; Permanent magnet motors; Permanent magnets; Synchronous motors; Torque; Field weakening control; PID controller; Permanent magnet stepper motor;
Conference_Titel :
Control, Automation and Systems (ICCAS), 2011 11th International Conference on
Conference_Location :
Gyeonggi-do
Print_ISBN :
978-1-4577-0835-0