Sepic converter FED BLDC drive with closed loop speed control

Out of various motors BLDC drive is mostly preferred because of its efficiency and high power density now a day's BLDC motor is preformed for low voltage fan application, a 3-phase voltage source inverter is used as electronic commutator connected to the stator winding of the BLDC motor, since the input side requires low voltage dc normally the household fan application single-phase AC is converted into DC to feed the BLDC motor to convert the available single-phase AC supply into low voltage DC we need a DC-DC converter, a SEPIC converter is used for convection into low voltage DC this paper mainly proposes a PV cell integrated SEPIC converter feeding a low voltage BLDC motor. A closed loop speed control for controlling the speed of the motor, Matlab/Simulink based model is developed and simulation results are presented.