Title :
A new feedforward compensation to reject Dc-link voltage ripple in bi-directional Z-Source inverter ASD system
Author :
Ding, Xinping ; Qian, Zhaoming ; Yang, Shuitao ; Peng, Fangzheng
Abstract :
A feedforward compensator applied in Z-source inverter ASD system has been presented. With this technique a constant peak dc-link voltage can be achieved with an excellent transient performance which enhances the rejection of input voltage ripple, and have good ride- through for voltage-sags. The effect of six pulse input voltage ripple which result from front-end diode rectifier has been described in detail, and the compensator is designed. The Z-source inverter ASD system with feedforward compensator has rapid transient response and good ride-through for voltage sag. It is very suitable for practical application due to its simplified controller design. The proposed technique was verified on a 10-kW prototype. The experimental and simulation results verified the theory very well.
Keywords :
control system synthesis; feedforward; invertors; power supply quality; bi-directional Z-source inverter ASD system; constant peak dc-link voltage; controller design; dc-link voltage ripple; feedforward compensation; front-end diode rectifier; input voltage ripple; power 10 kW; transient response; voltage-sags; Bidirectional control; Control systems; Diodes; Educational institutions; Inverters; Power system stability; Rectifiers; Variable speed drives; Voltage control; Voltage fluctuations; ASD system; Z-source inverter; buck-boost; feedforward controller; shoot-through;
Conference_Titel :
Applied Power Electronics Conference and Exposition, 2008. APEC 2008. Twenty-Third Annual IEEE
Conference_Location :
Austin, TX
Print_ISBN :
978-1-4244-1873-2
Electronic_ISBN :
1048-2334
DOI :
10.1109/APEC.2008.4522972
