Design and Implementation of Fully Digital-Controlled Single-Phase Inverter

• Main Authors: Chin-Chang Hsu, 許晉彰
• Other Authors: 賴炎生
• Format: Others
• Language: zh-TW
• Published: 2010
• Online Access: http://ndltd.ncl.edu.tw/handle/qq58q8

碩士 === 國立臺北科技大學 === 自動化科技研究所 === 98 === The object of the thesis is to design and implement a fully digital-controlled inverter which is able to be applied to an uninterruptable power supply. The inverter is designed with full-bridge topology, and is capable to produce 220V / 60Hz ac voltage with stable 400V dc voltage input, moreover, the inverter possesses PLL function. The inverter is accomplished with a 32-bit microcontroller-Renesas SH7216, which provides the control signal for the power switches, and also deal with the feedback signal to complete a voltage-controlled closed-loop system. It is demonstrated that with 400V dc voltage input, the inverter outputs 200V / 60Hz ac voltage which is in phase with reference ac voltage. Under full load output, THD of output voltage of the inverter is less than 3%, and the efficiency has reached 90%.