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전원전압과 DC-link 전압 추정에 의한 3상 컨버터 센서리스 제어
추흥석(Hung-Seok Chu),천창근(Chang-Gun Cheon),안진우(Jin-Woo Ahn),김철우(Cheul-U Kim) 전력전자학회 2001 전력전자학술대회 논문집 Vol.2001 No.7
A new control method of three phase converter without measuring input phase-voltage and DC-link voltage is proposed. Input phase-voltage of these required voltages<br/> is estimated using EKF(Extended Kalman Filter) and DC-link voltage is estimated from the measured line currents and the estimated input phase-voltage. This control method is achieved without PLL(Phase Locked Loop) which senses the angle of input phase-voltage and DC-link voltage sensor. In additon, the proposed method controls high power factor and DC-link voltage utilizing the estimated phase angle. This paper describes the effectiveness of the proposed estimated algorithm through simulations.