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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.
속도검출기없는 전압형 Inverter에 의한 유도전동기 속도제어
서영수(Young-Soo Seo),이춘상(Chun-Sang Lee),황락훈(Lak-Hoon Hwang),김주래(Ju-Rae Kim),조문택(Moon-Tack Cho) 전력전자학회 2001 전력전자학술대회 논문집 Vol.2001 No.7
When the vector control, which does not need a speed signal from a mechanical speed sensor, it is possible to reduce the cost of the control equipment and to improve the control performance in many industrial application.<br/> This paper describes a rotor speed identification method of induction motor based on the theory of flux model reference adaptive system. The estimator execute the rotor speed identification so that the vector control of the induction motor may be achieved. The improved auxiliary variable of the two model are introduced to perform accurate rotor speed estimation.<br/> The control system is composed of the PI controller for speed control and current controller using space voltage vector PWM technique. High speed calculation and processing for vector control is carried out by TMS320C31 digital signal processor Validity of the proposed control method is verified through simulation and experimental result.