Novel Buck-Boost Single Phase Inverter Considering Leakage Current

• Main Authors: Chih-Chia Yang, 楊智嘉
• Other Authors: 賴炎生
• Format: Others
• Online Access: http://ndltd.ncl.edu.tw/handle/vbax6e

碩士 === 國立臺北科技大學 === 電機工程研究所 === 104 === The objective of this thesis is to propose novel buck-boost single phase inverter considering leakage current. It can be widely used in renewable energy and UPS application. Traditional DC/AC inverter only provides buck function. To give both buck and boost function, it needs to add a boost converter in front of DC/AC inverter or add a transformer after DC/AC inverter. Both will increase cost and control difficulty. The design specifications are input DC voltage of 125V and 250V, output AC voltage of 110V/50Hz, total power rating of 1000 W, and switching frequency of 20 kHz. The voltage controller of this system is proportional-resonant controller to provide stable output voltage and fast dynamic response. A digital signal processor is used as control platform. Simulation and experimental results verify the proposed inverter were output 110V/AC with wide input DC voltage 125V and 250V, and the common mode current is less than 60 mA.