Novel Seven-Level Grid-Connect Photovoltaic Power Generation System

• Main Authors: Sheng-Kai Chang, 張勝凱
• Other Authors: Kuen-Der Wu
• Format: Others
• Language: zh-TW
• Published: 2013
• Online Access: http://ndltd.ncl.edu.tw/handle/b9u3f7

碩士 === 國立高雄應用科技大學 === 電機工程系博碩士班 === 101 === A photovoltaic power generation system consists of a dual output DC-DC power converter and a multi-level DC-AC power converter is developed in this thesis. A dual output DC-DC power converter with the functions of output voltage into a multiple relationship and maximum power point tracking is required. The multi-level DC-AC power converter includes a dual buck power converter and a full-bridge power converter. The dual buck power converter generate a four-level DC voltage. The full-bridge power converter is switched in low frequency and synchronously with the utility voltage and it convert this four-level DC voltage to a seven-level AC voltage inject into grid; it can also operate to an active power filter to compensate harmonic current.Computer simulation and 1.2kW hardware prototype are developed to verify the performance of the propose novel seven-level grid-connect photovoltaic power generation system. Both simulation and experimental results show that the performance of the propose novel seven-level grid-connect photovoltaic power generation system has the expected results.