On the feasibility of four-switch three-phase BLDC motor drives for low cost commercial applications: Topology and control Academic Article uri icon


  • The main purpose of this paper is to describe a low cost four-switch brushless dc (BLDC) motor drive for commercial applications. For effective utilization of the developed system, a novel direct current controlled pwm scheme is designed and implemented to produce the desired dynamic and static speed-torque characteristics. Also, the feasibility of the four-switch converter is extended to two-phase BLDC motor drives and the six-switch converter for power factor correction and speed control. The operational principle of the four-switch BLDC motor drive and the developed control scheme are theoretically analyzed and the performance is demonstrated by both simulation and experimental results.

published proceedings


author list (cited authors)

  • Lee, B. K., Kim, T. H., & Ehsani, M.

citation count

  • 114

complete list of authors

  • Lee, BK||Kim, TH||Ehsani, M

publication date

  • January 2003