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Direct Instantaneous Torque Control of SRM using 4-level Converter  

Lee, Dong-Hee (경성대 전기전자메카트로닉스 공학부)
Lee, Sang-Hun (경성대 공학기술연구소)
Ahn, Jin-Woo (경성대 전기전자메카트로닉스공학부)
Publication Information
The Transactions of the Korean Institute of Power Electronics / v.12, no.3, 2007 , pp. 205-212 More about this Journal
Abstract
This paper presents a direct instantaneous torque control (DITC) of Switched Reluctance Motor (SRM) with a novel 4-level converter to develop a uniform torque and to improve a dynamic performance. The DITC method can reduce a high torque ripple of SRM. Drive efficiency and dynamic performance with conventional drive are low due to a slow excitation current build-up. Since the 4-level converter can obtain an addition boosted voltage to have a fast excitation and demagnetization, it can Improve dynamic performance and efficiency easily. To apply the DITC technique to a 4-level converter, a novel control scheme is presented according to the operating modes. Additionally, selection of capacitances of boosted capacitor and efficiency improvement of 4-level converter are analyzed. At last, the validity of proposed method is verified by some computer simulations md comparative experiments.
Keywords
DITC; 4-level converter; uniform torque; dynamic performance;
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  • Reference
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