Title :
Performance characteristics of grid-tie solar inverter with series voltage compensator for reduction of high-voltage DC link capacitance
Author :
Wenchao Liu ; Kewei Wang ; Chung, Henry Shu-Hung ; Chuang, Steven
Author_Institution :
Centre for Smart Energy Conversion & Utilization Res., City Univ. of Hong Kong, Hong Kong, China
Abstract :
A grid-tie solar inverter with capacitor-supported series voltage compensator for reduction of high-voltage dc-link capacitance is proposed in this paper. The series compensator generates a voltage to counteract the voltage ripple on dc-link capacitor. As the magnitude of the AC voltage ripple is smaller than the dc-link DC voltage, the required voltage-current rating of the compensator is small. Detailed mathematical analysis on the static and dynamic behaviors of the overall system, and the control method will be discussed. The design guidelines of dc-link module will be given. The performance characteristics are favorably verified on a 2kW grid-tie solar inverter.
Keywords :
invertors; power grids; solar power stations; AC voltage ripple; DC-link DC voltage; DC-link capacitor; DC-link module; control method; detailed mathematical analysis; dynamic behavior; grid-tie solar inverter; high-voltage DC link capacitance reduction; power 2 kW; required voltage-current rating; series voltage compensator; static behavior; voltage ripple; Bridge circuits; Capacitance; Capacitors; Inverters; Reactive power; Steady-state; Voltage control;
Conference_Titel :
Applied Power Electronics Conference and Exposition (APEC), 2014 Twenty-Ninth Annual IEEE
Conference_Location :
Fort Worth, TX
DOI :
10.1109/APEC.2014.6803536
