| Summary: | 碩士 === 國立虎尾科技大學 === 電機工程研究所 === 99 === This thesis proposes a single-phase full-bridge AC/DC converter with bidirectional power flow and adjustable power factor. Based on a generalized zero vector technique, the proposed AC/DC converter combines a single-phase boost rectifier and a buck-boost converter into a single-stage AC/DC converter. The proposed converter has several advantages such as energy regeneration, sinusoidal waveform and adjustable power factor in the input. TI DSP TMS28335 chip and Vissim Embeded control software are both employed to achieve digital control requirement.The advantages of the converter include small size and easy adjustment for control parameters. Detecting output voltage, intermediate capacitance voltage, input voltage and current reaches relative control parameters. A derived modulation function is applied to control circuit, then the converter has faster response, and the advantages mentioned above. Furthermore, both DC and small signal mathematic models of the proposed converter are established to obtain the system transfer function. Finally, some experimental results, such as steady-state response and dynamic response are presented to verify the effectiveness of the proposed converter.
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