Research on Flux-weakening Control Strategy with Overmodulation of PMSM Control System

doi:10.3969/j.issn.1000-1093.2016.05.025

Abstract

Abstract: To broaden the speed range of motor control system and meet the requirements of system for strong torque response capability and the large torque output characteristics, an overmodulation method is applied to PMSM control system based on the flux-weakening control strategy. The demand of the motor response is different in the complex and changeable operating condition. Simulations and experiments are carried out. The simulations and experimental results are analyzed. Compared to the flux-weakening control strategy without overmodulation, it is found that the introduction of overmodulation method can make the system take full advantage of DC bus voltage. The torque response and large torque output are improved, and the speed response time is reduced by using the proposed method. At the same time, the working efficiency of motor is in accordance with the application requirements.

Key words: ordnance science and technology, permanent magnet synchronous motor, control system, flux-weakening control, overmodulation

CLC Number:

TM301.2

TU Qun-zhang， LIN Jia-kun， ZENG Fan-qi， ZOU Shi-chao， LU Ying. Research on Flux-weakening Control Strategy with Overmodulation of PMSM Control System[J]. Acta Armamentarii, 2016, 37(5): 953-960.

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