Performance of the Inverter with the Super Capacitor for Vector Controlled Induction Motor Drives

Abstract

This paper presents a direct current (DC) power supply circuit consisted of a battery and a super capacitor. An inverter-fed induction motor (IM) drive is controlled using the proposed power supply circuit. This power supply circuit includes a power regeneration system consisting of a battery that is connected to a super capacitor through a step-up and down chopper. Through switching control of the step-up and down chopper, the chopper can control charge and discharge of the super capacitor. Therefore, it is enable to DC energy with the chopper control. When the inverter-fed IM drive generates a power with regenerative braking, the power energy is charged to the super capacitor. It discharges the energy power when the IM is accelerated or load is added to the IM. By controlling the energy of the super capacitor suitably, the proposed power supply circuit can reduce the load of battery. The utility of the proposed method is examined through computer simulations and experimental results