以微控器為基礎之單相交流穩壓器研製

DESIGN AND IMPLEMENTATION OF SINGLE-PHASE AC VOLTAGE REGULATOR BASED ON MICROCONTROLLER

蔡宏群(Hung-Chun Tsai)

指導教授 ： 李清元

大同大學/電機資訊學院/電機工程學系所/碩士(2009年)

摘要

本論文主旨在研究具有高功因、低電壓調整率、低總諧波失真與後備電源之單相交流穩壓器。整個系統包括單相升壓式功因修正器、雙向轉換器及直流/交流換流器。文中採用單相升壓式功因修正器，來提高交流輸入側之功率因數及提供250V直流鏈電壓，其直流鏈電壓可由雙向轉換器操作於降壓模式對蓄電池充電，並透過直流/交流換流器將其轉換成AC 110Vrms、60Hz輸出。當電源側發生故障時，再利用雙向轉換器操作於升壓模式，將48V蓄電池升壓至250V供給負載不間斷之能量。最後採用類比/數位混合控制，以類比IC完成功因修正器及雙向轉換器，而單晶片微控器PIC18F4520則完成直流/交流換流器之控制，並以實驗結果驗證本論文之理論及設計的可行性。

關鍵字

交流穩壓器 ； 微控器

並列摘要

The purpose of this thesis is to study a single-phase AC voltage regulator with high power factor, low voltage regulation, low total harmonic distortion (THD), and back-up power. The system consists of a single-phase AC/DC boost type pre-regulator, a bidirectional DC/DC converter, and a DC/AC inverter.
The single phase AC/DC boost type pre-regulator can get high input power factor and get the DC-link voltage 250 volts to charge the batteries by the bidirectional DC/DC converter operating in buck mode and to provide AC 110Vrms、60Hz output by the DC/AC inverter. The bidirectional DC/DC converter can provide power in boost mode by boosting the DC 48V to 250V from the batteries when the utility is breakdown or outage.
Finally, the analog and digital hybrid control is used to implement the proposed system. The AC/DC boost type pre-regular and bidirectional DC/DC converter are accomplished with analog IC and the DC/AC inverter can be controlled with the single-chip microcontroller PIC18F4520. As a result, it can verify the feasibility of the proposed principle and implementation.

並列關鍵字

AVR ； Microcontroller

參考文獻

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