期刊名称：International Journal of Innovative Research in Science, Engineering and Technology
印刷版ISSN：2347-6710
电子版ISSN：2319-8753
出版年度：2014
卷号：3
期号：3
页码：10809
出版社：S&S Publications
摘要：The Brushless DC motors (BLDC) find widespread applications in domestic and industries due to theirlow and high power density and ease of speed control. To accomplish desired level of performance the motor requiressuitable speed controllers. In case of permanent magnet Brushless DC motors, usually control of speed is reached byusing proportional integral (PI) controller. Although the conventional PI controllers are widely used in the industry dueto their simple control structure and ease of implementation, these controllers pose difficulties where there are somecontrol complexity such as nonlinearity, load disturbances and parametric variations. Moreover PI controllers requireprecise linear mathematical models. This paper presents a low cost four-switch brushless dc (BLDC) motor drive forcommercial applications. The proposed model uses four switches inplace of six switches in the conventional six switchthree phase inverter topology. Direct phase current control (DPC) scheme is employed to avoid problems caused byelimination of two power switches. The PI controller is implemented in the developed system to achieve improvedperformance. The speed, torque and current response of proposed and conventional method is demonstrated andcompared via simulation using MATLAB SIMULINK software.
关键词：Brushless dc Motor; Direct phase current(DPC) control; four switch converter; PI controller
