Sensorless Control of Ipmsm

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Published in IET Electric Power Applications Received on 3rd September 2009 Revised on 10th November 2009 doi: 10.1049/iet-epa.2009.0214

ISSN 1751-8660

Design and implementation of a novel high-performance sensorless control system for interior permanent magnet synchronous motors

J.-L. Chen T.-H. Liu C.-L. Chen

Department of Electrical Engineering, National Taiwan University of Science and Technology, Taiwan E-mail: Liu@mail.ntust.edu.tw

Abstract: This study proposes a novel high-performance rotor position estimator for an interior permanent magnet synchronous motor (PMSM). By suitably processing the mathematical model of the motor, a systematic method of the rotor position estimating method has been developed. The proposed control system can be used in the space vector pulse-width modulation switching method, which is widely used in industry. By measuring the DC-bus voltage and the phase currents, a systematic rotor position estimator has been developed. Finally, the rotor position and rotor speed are obtained, and a closed-loop control system can be achieved. A digital signal processor, TMS 320F2812, is used to execute the estimating algorithm and control algorithm. As a result, the hardware is very simple. Several experimental results show that both the position control system and the adjustable speed control system are achieved. The system can be adjusted from 1 to 2000 r/min. In addition, by using the proposed position-loop H 1 controller, the position control system can be achieved with satisfactory performance. This study proposes a new method for a sensorless interior PMSM control system.

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Introduction

The permanent magnet synchronous motor (PMSM) has been widely used in industrial applications because of its highperformance characteristics. In the high-performance speed control and precise position control, a resolver or an encoder is required to execute a field-oriented control algorithm. The required high-resolution...