Authors
1 Department of Electrical Engineering-University of Technology, Baghdad-Iraq
2 Department of Electrical Engineering-University of Technology,Baghdad-Iraq
Abstract
This paper presents a design of a complete dual-loop controller for 4-switch
brushless dc motor. In low power, low-cost applications, the 4-switch inverter topology is
a felicitous alternative of the ordinary 6-switch inverter. The controller of the 4-switch
BLDC motor has to be uncomplicated and can be implemented without the use of
expensive hardware to avoid increasing the overall cost of the drive system. Furthermore,
the control must be able to deal with the known problems of the 4-switch drive which are
speed limitation and high ripple torque. The proposed controller comprises sliding mode
speed control and direct current hysteresis control. To investigate the performance of the
proposed design, the system is modeled by using Matlab/Simulink, the results are
obtained for different working conditions. The propitious results certify the applicability
of the proposed controller in low-cost 4-switch BLDC motor drive systems.
Keywords
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