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Journal Article
Sensorless Sine-Wave Controller IC for PM Brushless Motor Employing Automatic Lead-Angle Compensation
- Authors
- Minki Kim, Sewan Heo, Jimin Oh, Jung-Hee Suk, Yil Suk Yang, Ki-Tae Park, Jinsung Kim
- Issue Date
- 2015-12
- Citation
- ETRI Journal, v.37, no.6, pp.1165-1175
- ISSN
- 1225-6463
- Publisher
- 한국전자통신연구원 (ETRI)
- Language
- English
- Type
- Journal Article
- Abstract
- 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.