Grid-Connected Power Converter System for PV/Wind Energy Source

• Main Authors: Chung-Sheng Cheng, 鄭仲聖
• Other Authors: none
• Format: Others
• Language: zh-TW
• Published: 2005
• Online Access: http://ndltd.ncl.edu.tw/handle/82503191812533352471

碩士 === 國立中正大學 === 電機工程所 === 93 === A grid-connected power converter system fed by solar energy source and wind en¬ergy source is presented in this thesis. The proposed power converter system co¬n¬sists of a power stage and a control stage. In the power stage, a multi-input dc/dc converter incorporated with the perturbation-and-observation method can draw the maxi¬mum power from the two renewable energy sources simultaneously or indi¬vidu¬ally. Then, a full-bridge dc/ac inverter will transmit the power to the utility line. In the control stage, the control circuit is realized by using two microcontrollers and auxiliary analog circuits. For practical applications, func¬tions of soft-start and circuit protection are implemented. Finally, a 1.5 kW proto¬type fed by solar energy source and wind energy source is built and tested. Experimen¬tal re¬sults are shown to verify the performance of the proposed power converter system.