Multiinput inverter for grid-connected hybrid PV/wind power system

Author

Chen, Y.-M. ; Hung, S.-C. ; Cheng, C.-S. ; Liu, Y.-C.

Author_Institution

Dept. of Electr. Eng., Nat. Chung Cheng Univ., Ming-Hsiung

Volume

2

fYear

2005

fDate

6-10 March 2005

Firstpage

850

Abstract

The objective of this paper is to propose a novel multi-input inverter for the grid-connected hybrid PV/wind power system in order to simplify the power system and reduce the cost. The proposed multi-input inverter consists of a buck/buck-boost fused multiinput DC/DC converter and a full-bridge DC/AC inverter. The output power characteristics of the PV array and the wind turbine are introduced. The perturbation and observation method is used to accomplish the maximum power point tracking algorithm for input sources. The operational principle of the proposed multiinput inverter is explained. The control circuit is realized by using a digital signal processor and auxiliary analog circuits. For practical applications, functions of soft-start and circuit protection are implemented. Experimental results have shown the performance of the proposed multiinput inverter with desired features

Keywords

DC-AC power convertors; analogue circuits; bridge circuits; cost reduction; digital signal processing chips; invertors; perturbation techniques; photovoltaic power systems; power system control; wind turbines; PV array; auxiliary analog circuits; buck-buck-boost fused DC-DC converter; circuit protection; cost reduction; digital signal processor; full-bridge DC-AC inverter; hybrid PV system; multiinput inverter; observation method; perturbation method; power point tracking algorithm; wind power system; wind turbine; Circuits; Costs; DC-DC power converters; Digital signal processors; Hybrid power systems; Inverters; Power generation; Signal processing algorithms; Wind energy; Wind turbines;

fLanguage

English

Publisher

ieee

Conference_Titel

Applied Power Electronics Conference and Exposition, 2005. APEC 2005. Twentieth Annual IEEE

Conference_Location

Austin, TX

Print_ISBN

0-7803-8975-1

Type

conf

DOI

10.1109/APEC.2005.1453081

Filename

1453081