Title :
Multi-Input Inverter for Grid-Connected Hybrid PV/Wind Power System
Author :
Chen, Yaow-Ming ; Liu, Yuan-Chuan ; Hung, Shih-Chieh ; Cheng, Chung-Sheng
Author_Institution :
Elegant Power Application Res. Center, Nat. Chung Cheng Univ., Chia-Yi
fDate :
5/1/2007 12:00:00 AM
Abstract :
The objective of this paper is to propose a novel multi-input inverter for the grid-connected hybrid photovoltaic (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 multi-input 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 multi-input 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 multi-input inverter with desired features
Keywords :
DC-DC power convertors; cost reduction; hybrid power systems; invertors; photovoltaic power systems; wind power plants; wind turbines; PV array; auxiliary analog circuits; control circuit; cost reduction; digital signal processor; full bridge dc-ac inverter; grid-connected hybrid PV-wind power system; maximum power point tracking algorithm; multiinput dc-dc converter; multiinput inverter; observation method; perturbation method; wind turbine; Circuits; Costs; DC-DC power converters; Hybrid power systems; Inverters; Photovoltaic systems; Power generation; Solar power generation; Wind energy; Wind turbines; Inverter; photovoltaic (PV); wind energy;
Journal_Title :
Power Electronics, IEEE Transactions on
DOI :
10.1109/TPEL.2007.897117
