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학술지 Sensorless Sine-Wave Controller IC for PM Brushless Motor Employing Automatic Lead-Angle Compensation
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김민기, 허세완, 오지민, 석정희, 양일석, 박기태, 김진성
ETRI Journal, v.37 no.6, pp.1165-1175
한국전자통신연구원 (ETRI)
This paper presents an advanced sensorless permanent magnet (PM) brushless motor controller integrated circuit (IC) employing an automatic lead-angle compensator. The proposed IC is composed of not only a sensorless sinewave motor controller but also an isolated gate-driver and current self-sensing circuit. The fabricated IC operates in sensorless mode using a position estimator based on a sliding mode observer and an open-loop start-up. For high efficiency PM brushless motor driving, an automatic leadangle control algorithm is employed, which improves the efficiency of a PM brushless motor system by tracking the minimum copper loss under various load and speed conditions. The fabricated IC is evaluated experimentally using a commercial 200 W PM brushless motor and power switches. The proposed IC is successfully operated without any additional sensors, and the proposed algorithm maintains the minimum current and maximum system efficiency under 0 N횂?줺 to 0.8 N횂?줺 load conditions. The proposed IC is a feasible sensorless speed controller for various applications with a wide range of load and speed conditions.
KSP 제안 키워드
Angle compensation, Controller IC, Integrated circuit, Load conditions, Maximum system efficiency, Minimum current, Motor Controller, Motor system, Power switch, Sensing circuit, Sine wave