本論文旨在研製並比較使用不同數位訊號處理器控制架構下之休旅車用變頻器，此電路由推挽式轉換器與單相全橋變頻器所構成。推挽式轉換器將車用之鉛酸電池所提供12V直流電壓提升至200V直流電壓，再經由單相全橋變頻器將此直流電源轉換為可調整之110V至120V/60Hz交流電源，供給休旅車上之電器設備使用。本文首先介紹車用變頻器之原理及電路架構，依序說明推挽式轉換器電路原理、單相全橋式變頻器電路原理、正弦脈波寬度調變技術、回授補償器之分析與設計、變頻器之數位訊號處理器程式動作流程、保護電路之分析與設計，最後將實作一車用變頻器，分別由16位元數位訊號處理器及8位元微控制器所控制之。本文提出全數位化之軟體控制方法，實測結果驗證了本電路的正確性與可行性。

This thesis develops an inverter for recreational vehicles and compares the differences between two digital controllers. A front-stage push-pull converter boosts the lead-acid batteries voltage (12 V) to 200 V. Then a post-stage single-phase full-bridge inverter converts the 200-V input voltage to an AC output voltage with an amplitude of 110 V to 120 V and a frequency of 60 Hz, to supply the electrical equipment in recreational vehicles. This thesis also introduces the operation principles and structure of the converter system, including the push-pull converter, the single-phase full-bridge inverter, the sinusoidal pulse width modulation technology, and the analysis and design of the feedback compensator, the digital controllers and the protection circuits. A prototype inverter is built and tested with a 16-bit digital signal processor and an 8-bit microcontroller, respectively. Experimental results verify the correctness and feasibility of the presented inverter system.

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