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Sensorless Vector Control for Maximum Torque of SynRM in the Field Weakening Region  

Lee, Jung-Chul (School of Information & Communication Engineering, Suncheon National University)
Chung, Dong-Hwa (School of Information & Communication Engineering, Suncheon National University)
Publication Information
Journal of the Korean Society of Safety / v.17, no.2, 2002 , pp. 32-38 More about this Journal
Abstract
In this paper, a new approach for the SynRM(Synchronous Reluctance Motor) control which ensures producing MTPA(Maximum Torque per Ampere) over the entire field weakening region is presented. In addition, this paper presents a speed sensorless control scheme of SynRM using flux observer. Also, by adjusting the base speed for the field weakening operation according to the flux level, the current and voltage limit, the smooth and precise transition into the field weakening operation can be achieved. The validity of the proposed scheme is verified through simulation.
Keywords
PMSM; maximum torque control; MTPA control; field weaking control; vector control;
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