Speed control of Induction motor drive using PFC CUK converter fed quasi Z-source inverter

摘要

This paper discuss about a bridgeless CUK converter configuration which resolves the problem of power factor for Induction motor (IM). The current path is designed with two switches only which reduce the conduction losses. The topology is designed in discontinuous current mode to improve the power factor and to reduce current stress in input side. Since, IM motor is driving from a 3Φ AC voltage supply; a DC to AC converter is necessary. But this operation practically results in reduced output voltage. To avoid this problem, a quasi Z source-inverter is implemented with sinusoidal pulse width modulation method to improve the efficiency of overall system.