대한전기학회:학술대회논문집 (Proceedings of the KIEE Conference)
- 대한전기학회 2007년도 추계학술대회 논문집 전기기기 및 에너지변환시스템부문
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- Pages.138-140
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- 2007
토크분배함수를 이용한 SRM의 적접토크제어기법
Direct Torque Control Scheme of Switched Reluctance Motor using Novel Torque Sharing Function
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Ahn, Jin-Woo
(Kyungsung Univ.) ;
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Lee, Dong-Hee
(Kyungsung Univ.) ;
- Kim, Tae-Hyoung (Kyungsung Univ.) ;
- Liang, Jianing (Kyungsung Univ.)
- 발행 : 2007.10.25
초록
A novel non-linear logical torque sharing function (TSF) is presented. To improve efficiency and to reduce torque ripple in commutation region, only a phase torque under commutation is regulated to produce a uniform torque. And the torque developed by the other phase remains with the previous state under a current limit of the motor and drive. If the minimum change of a phase torque reference can not satisfy the total reference torque, two-phase changing mode is used. Since a phase torque is constant and the other phase torque is changed at each rotor position, total torque error can be reduced within a phase torque error limit. And the total torque error is dependent on the change of phase torque. To consider non-linear torque characteristics and to suppress a tail current at the end of commutation region, the incoming phase current is changed to torque increasing direction, but the outgoing phase current is changed to torque decreasing direction. So, the torque sharing of the outgoing phase and incoming phase can be smoothly changed with a minimum current cross over. The proposed control scheme is verified by some computer simulations and experimental results.
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