DC bus regulation strategy for grid-connected PV power generation system

Author

Chen, Yaow-Ming ; Wu, Hsu-Chin ; Chen, Yung-Chu

Author_Institution

Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei

fYear

2008

fDate

24-27 Nov. 2008

Firstpage

437

Lastpage

442

Abstract

A novel DC bus regulation strategy for grid-connected PV power generation system is proposed in this paper. The power flow of the grid-connected PV power generation system is introduced first. The operational principles of different DC bus regulation strategies are presented. The mathematical equations for the current command adjustment of the injected AC line current are derived. The proposed DC bus regulation strategy can mitigate the AC line current variation, improve the power quality of AC mains, reduce the size of the DC-link capacitor, and increase the reliability of the grid-connected PV power generation system. Experimental results are presented to verify the performance of the proposed DC bus regulation strategy.

Keywords

photovoltaic power systems; power grids; power supply quality; DC bus regulation strategy; current command adjustment; grid-connected PV power generation system; injected AC line current; power quality; Capacitors; Circuit topology; Costs; DC-DC power converters; Inverters; Photovoltaic systems; Power generation; Power quality; Power system reliability; Voltage; DC bus voltage; grid-connected PV power system; power quality;

fLanguage

English

Publisher

ieee

Conference_Titel

Sustainable Energy Technologies, 2008. ICSET 2008. IEEE International Conference on

Conference_Location

Singapore

Print_ISBN

978-1-4244-1887-9

Electronic_ISBN

978-1-4244-1888-6

Type

conf

DOI

10.1109/ICSET.2008.4747047

Filename

4747047