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Journal Article
Load-Adaptive 180-Degree Sinusoidal Permanent-Magnet Brushless Motor Control Employing Automatic Angle Compensation
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- Authors
- Minki Kim, Jimin Oh, Jung-Hee Suk, Sewan Heo, Yil Suk Yang
- Issue Date
- 2013-10
- Citation
- IEEK Transactions on Smart Processing & Computing, v.2, no.5, pp.310-316
- ISSN
- 2287-5255
- Language
- English
- Type
- Journal Article
- Abstract
- This paper reports a sinusoidal 180° drive for a permanent magnet (PM) brushless motor employing automatic angle compensator to suppress the driving loss during the wide-range load operation. The proposed drive of the sinusoidal 180° PM Brushless motor reduced the amplitude of the 3-phase current by compensating for the lead-angle of the fundamental waves of the 3-phase PWM signal. The conventional lead-angle method was implemented using the fixed angle or memorized table, whereas the proposed method was automatically compensated by calculating the angle of the current and voltage signal. The algorithm of the proposed method was verified in a 30 W PM brushless motor system using a PSIM simulator. The efficiency of the conventional method was decreased 90 % to 60 %, whereas that of proposed method maintained approximately 85 % when the load shift was 0 to 0.02 N·m. Using an FPGA prototype, the proposed method was evaluated experimentally in a 30 W PM brushless motor system. The proposed method maintained the minimum phase RMS current and 79 % of the motor efficiency under 0 to 0.09 N·m load conditions. The proposed PM brushless motor driving method is suitable for a variety of applications with a wide range of load conditions.
- KSP Keywords
- Angle compensation, Brushless motor, Conventional methods, Driving method, FPGA prototype, Load adaptive, Load conditions, Minimum phase, Motor Control, Motor efficiency, Motor system