Power quality improvement in a induction motor drive using zeta converter as single stage PFC converter

New recommendations and present standards have increased the interest in power factor correction circuits. Solid-state switch-mode converters have reached a matured level for improving power quality in terms of Power Factor Correction (PFC), reduced total harmonic distortion at input ac mains and precisely regulated dc output in buck, boost, buck–boost and multilevel modes with unidirectional and bidirectional power flow. In this paper, an improved power quality converter employing Zeta converter topology with conventional PI  is used to feed a Induction Motor (IM) drive. Normally, the IM drive consists of a three-phase voltage source inverter (VSI) which is fed from single-phase AC mains through a diode bridge rectifier (DBR). In this proposed system a conventional PI based Zeta converter is used after the DBR and it performs power factor correction (PFC) at input AC mains and voltage control at DC link, in a single-stage. The proposed IM drive is designed, modeled and its performance is evaluated in Matlab-Simulink environment. Obtained results are compared with SEPIC converter fed  IM drive and results are presented to demonstrate an improved power quality  that is achieved with zeta converter over that of SEPIC converter based IM drive in wide range of the speed control. Due to increasing importants of Energy efficiency issues  the PFC technology has become center of attraction of many industries and becomes states of art. Due to energy conversion and regulation it has become mandatory to conserve electric power. Hence PFC becomes the bench mark for energy conservation with (VSD) variable speed drive.