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EXTENDED KALMAN FILTER를 이용한 유도전동기 벡터 제어
서영수,허종명 명지대학교 산업기술연구소 2001 産業技術硏究所論文集 Vol.20 No.-
This paper presents a detailed study of the extended Kalman filter(EKF) for estimating the rotor speed of an induction motor drive. The general structure of the Kalman filter is reviewed and the various system vectors and matrices are defined. By including the rotor speed as a state variable, the EKF equations are established from a discrete two axis model of the three-phase induction motor. using the software MATLAB/Simulink, simulation of the EKF speed estimation algorithm is carried out for an induction motor drive with direct self control. The investigations show that the EKF is capable of tracking the actual rotor speed provided that the elements of the covariance matrices are properly selected. Moreover, the performance of the EKF is satisfactory even in the presence of noise or when there are variations in the indution machine parameters.
전력용 IGBT의 미시적인 모델링에 의한 소자특성 및 전압형 인버터 시뮬레이션
서영수(Young-Soo Seo),백동현(Dong-Byun Baek),조문택(Moon-Tack Cho),이상훈(Sang-Hun Lee),허종명(Jong-Myung Heo) 전력전자학회 1996 전력전자학술대회 논문집 Vol.1996 No.-
An micro model for the power Insulated Gate Bipolar Transistor(lGBT) is developed The, model consistently described the IGBT stealy-state current-voltage char ̄acteristics and switching transient current and voltage waveform for all loa야ng conditions. The model is based on the equivalent circuit of a MOSFET with supplies Ow base current to a low-l4nin, high-level injection, bipolar transistor with its base virtual contact fit the collector and of thr base Model results are compared with measured turn-on and turn-off waveform for different dhive, load, and feedback circuils.