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

fYear

2014

fDate

16-20 March 2014

Firstpage

1711

Lastpage

1717

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Applied Power Electronics Conference and Exposition (APEC), 2014 Twenty-Ninth Annual IEEE

Conference_Location

Fort Worth, TX

Type

conf

DOI

10.1109/APEC.2014.6803536

Filename

6803536