A Two-stage Kalman Filter for Sensorless Direct Torque Controlled PM Synchronous Motor Drive. (15th April 2013)

• Record Type: Journal Article
• Authors: Yi, Boyu; Kang, Longyun; Jiang, Kai; Lin, Yujian
• Other Names: Yan Jun-Juh Academic Editor.
• Is Part Of: Mathematical problems in engineering. Volume 2013(2013)
• Publication Date: 2013-04-15
• Subjects: Engineering mathematics -- Periodicals; 510.2462
• DOI: 10.1155/2013/768736
• Languages: English
• ISSNs: 1024-123X

Abstract

Abstract : This paper presents an optimal two-stage extended Kalman filter (OTSEKF) for closed-loop flux, torque, and speed estimation of a permanent magnet synchronous motor (PMSM) to achieve sensorless DTC-SVPWM operation of drive system. The novel observer is obtained by using the same transformation as in a linear Kalman observer, which is proposed by C.-S. Hsieh and F.-C. Chen in 1999. The OTSEKF is an effective implementation of the extended Kalman filter (EKF) and provides a recursive optimum state estimation for PMSMs using terminal signals that may be polluted by noise. Compared to a conventional EKF, the OTSEKF reduces the number of arithmetic operations. Simulation and experimental results verify the effectiveness of the proposed OTSEKF observer for DTC of PMSMs.