| 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 |
| DOI |
https://doi.org/10.6113/TKPE/2018.23.1.9 |
| 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. |