대한전기학회:학술대회논문집 (Proceedings of the KIEE Conference)

대한전기학회 (The Korean Institute of Electrical Engineers)
권호 표지

공간 벡터 PWM 방식을 이용한 유도전동기의 새로운 과변조 제어 기법

A New Overmodulation Strategy for Induction Motor Drive Using Space Vector PWM

  • 석줄기 (서울대학교 공과대학 전기공학과) ;
  • 설승기 (서울대학교 공과대학 전기공학과)
  • Seok, Jul-Ki (Dept. of Electrical Engineering, Seoul National University) ;
  • Sul, Seung-Ki (Dept. of Electrical Engineering, Seoul National University)
  • 발행 : 1994.11.18
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초록

In the overmodulation region, the operation of the three phase induction motor with a current controller is characterized by a rapid deterioration of the motor torque and speed. It is desirable to use the overmodulation strategy that extends the normal operating range even in this case. In this paper, a new overmodulation strategy is proposed for the high performance motor drives and the comparison study with two conventional methods are also described. In the proposed strategy, considering the motor dynamics, a suitable voltage vector is selected in order to extend the stable operating range in the overmodulation region. With this advanced overmodulation algorithm, the normal operating range can be extended without any extra hardware.

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