Vector controlled induction motor drives with electrical double layer capacitor

This paper proposes a direct current (DC) power supply circuit consisted of a battery and an electrical double layer capacitor (EDLC). Inverter-fed induction motor (IM) drive is controlled using the proposed power supply circuit. This power supply circuit can be composed of a power regeneration system consisting of the battery connected to the EDLC through a step-up and down chopper. By switching control of the step-up and down chopper, it can control charge and discharge of the EDLC. Therefore, the EDLC enables us to achieve the giving and receiving of DC with the inverter. When the inverter-fed IM drive generates a power with regenerative braking, the power is charged to the EDLC. The EDLC discharges the charged power when the inverter-fed IM drive is accelerated or load is added to the inverter-fed IM. By means of these works, the proposed power supply circuit can reduce the load of battery. The utility of the proposed method is examined through computer simulations.