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김경식(Kyung-Sik Kim),원재선(Jae-Son Won),송현직(Hyun-Jik Song),김동희(Dong-Hee Kim),이광식(Gwang-Sik Lee) 한국조명·전기설비학회 1999 한국조명·전기설비학회 학술대회논문집 Vol.1999 No.-
The power semiconductor switching devices(PSSD) continuously developed, Power Electronic Technology using PSSD is gradually extended. The high frequency inverter to generate the large power high frequency subject to power electronic technology pursuit various applications. Also, in emboss with environmental destruction problem cause the atmosphere and the water pollution to growth of the commercial society, the research in favor of cleaning environmental a pollutant actively proceed. Therefore, this paper describe study on the high frequency pulse power supply. The theoretical results are in good agreement with the experimental ones. The proposed pulse power supply is considerated to be useful for discharge lamp.
브러쉬 없는 축 방향 이중 회전자 직류 모터의 센서리스 구동에 관한연구
康泰三,元在善 湖西大學校工業技術硏究所 1999 工業技術硏究所論文集 Vol.18 No.-
In this paper, presented are experimental results of sensorless driving of a brushless dc motor with a double axial type rotor. The rotor position is estimated using back EMF on the driving terminals. For the estimation of the position of the rotor, a bandpass filter with 90 degrees phase shift is used. A new starting algorithm is proposed for the driving of the motor at standstill. The proposed algorithm demonstrated better performance in that speed of the motor increases more smoothly from standstill to a normal operating point. The sensorless driving system result showed that it works well in the range from 300 rpm to 5000 rpm.