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3-Phase Current Estimation of SRM Based on DC-Link Current  

Kim, Ju-Jin ((주)다원시스 기업연구소)
Choi, Jae-Ho (충북대 전기전자컴퓨터공학부)
Kim, Tae-Woong (경상대 제어계측공학과)
Publication Information
The Transactions of the Korean Institute of Power Electronics / v.11, no.4, 2006 , pp. 307-312 More about this Journal
Abstract
This paper proposes the SRM drive system, which accurately estimates the phase currents from the DC-link current to drive SRM instead of detecting the three-phase currents. In addition, the detecting circuit of DC-link current is also proposed to increase the resolution and decrease the off-set influence. Comparing with the general drive system based on the phase current, it is verified through the experiments that the proposed SRM drive system based on the DC-link current has the good performance in steady-state response of the speed control. Using the DC-link current, all of the 3-phase currents can be easily estimated for driving the SRM.
Keywords
Switched Reluctance Motor; Estimation; DC-link current; Phase-current; Off-set;
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  • Reference
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