Mobile QR Code QR CODE : The Korean Institute of Power Electronics
Title Bq-ZSI fed Induction Motor Drive System Using Modified Space Vector Modulation
Authors Sang-Hyup Han ; Heung-Geun Kim ; Honnyong Cha ; Tea-Won Chun ; Eui-Cheol Nho
Page pp.9-15
ISSN 1229-2214
Keywords ZSI(Z-source Inverter) ; q-ZSI(quasi-Z-source Inverter) ; Bq-ZSI(Bidirectional quasi-Z-source Inverter) ; EV(Electric Vehicle) ; Modified space vector modulation ; Shoot-through
Abstract This study investigates a bidirectional quasi-Z-source inverter (Bq-ZSI) system with bidirectional power transfer capability and a modified space vector modulation scheme for reducing the ripple of the inductor current. By replacing the diode in the impedance network with an active switch, the power flow can be bidirectional. The average inductor current of the Bq-ZSI network is negative in the regenerative braking mode, thereby regenerating the power. In addition, modified space vector modulation scheme is applied to the Bq-ZSI to control shoot-through time effectively. A 5 kW prototype is built and tested to implement the proposed system. Experimental results show that the Bq-ZSI system is capable of regenerative braking of the induction motor and that the modified space vector modulation method is efficient.