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http://dx.doi.org/10.5370/JEET.2012.7.6.905

Thermal Analysis of Interior Permanent-Magnet Synchronous Motor by Electromagnetic Field-Thermal Linked Analysis  

Lee, Sang-Taek (Dept. of Electronics, Electrical, Control and Instrumentation Engineering, Hanyang University)
Kim, Hee-Jun (Dept. of Electronics, Electrical, Control and Instrumentation Engineering, Hanyang University)
Cho, Ju-Hee (Korea Electronics Technology Institute)
Joo, Dae-Suk (Dept. of Electrical Engineering, Pukyong National University)
Kim, Dae-Kyong (Dept. of Electrical Control Engineering, Sunchon National University)
Publication Information
Journal of Electrical Engineering and Technology / v.7, no.6, 2012 , pp. 905-910 More about this Journal
Abstract
This paper reports an investigation of pulse width modulation (PWM) techniques for twophase brushless DC (BLDC) motors fed by a two-phase eight-switch inverter in a fan application. The three-phase BLDC motor is widely applied in industry; however, a lower-cost two-phase BLDC motor and drive circuit has been greatly in demand in recent years. In this paper, we introduce a mathematical model of the two-phase BLDC motor with sinusoidal back electromotive forces (EMFs) based on traditional three-phase BLDC motors. To simplify the drive algorithm and speed up its application, we analyze the principle of block commutation for a two-phase BLDC motor drive in the 180-electricaldegree conduction mode, and we further propose five PWM schemes to improve the commutation performance of the two-phase BLDC drive. The effectiveness of the proposed PWM methods is verified through experiments.
Keywords
Thermal analysis; Analytical models; Numerical models; Permanent-magnet motors;
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