A Bridge-less IPOS PFC Zeta Converter Fed BLDC Motor Drive for Home Appliances

A bridge-less (BL) input parallel and output series (IPOS) type power factor correction (PFC) non-isolated Zeta converter is proposed for brush-less direct current (BLDC) motor drive. The operating modes of BL IPOS PFC Zeta converter is thoroughly discussed and further the proposed converter is designed to drive BLDC motor. Thereafter, the converter is controlled using voltage follower technique to achieve controllable output voltage for BLDC speed control. Correspondingly, the unity power factor operation accomplished for better power quality performance. The six step electronic commutation based switching scheme is employed for BLDC motor inverter in order to evade switching losses occurs in current control based high frequency switching technique. Further, the BL IPOS PFC Zeta converter based BLDC motor drive performance under steady-state and dynamic situations are evaluated with the help of MATLAB/Simulink to test its suitability for home appliances.