Performance analysis and simulation of inverter-fed slip-power recovery drive

Abstract

In this paper, performance analysis and PSPICE simulation of inverter-fed slip-power recovery drive is presented. This drive is different than other slip-power recovery drives in the sense that the slip-power from rotor terminals is recovered to the dc-link of feeding inverter to the motor while in other schemes slip-power is recovered to the ac source. Recovery of slip-power from rotor terminals to ac supply is blocked by diode bridge rectifier, which is used to feed the motor inverter. Steady-state performance analysis of the drive is done with the help of dc and ac mathematical models. PSPICE simulation of this drive is done using equivalent circuit model of the wound rotor induction motor. This drive is developed in the laboratory for a 2-kVA wound-rotor induction motor. Theoretical and experimental performances and simulation results are found as expected.