摘 要
雙組輸出電力轉換器廣泛運用於電力電子領域當中。在過去，工程師處理雙組輸出穩態狀況下之交互穩壓的設計，一直沒有一套有效的解決方式，導致常常需要一段多次嘗試錯誤的過程才能完成設計。
為改善以上缺點，在本論文中首先討論雙組輸出電力轉換器二次側的非理想模型，並說明其影響雙組輸出電壓的落點與電路設計的方法。本論文以直角座標概念，來設計回授權重比和變壓器次級圈數比，並將所得的輸出電壓繪於VO1-VO2平面上，再以此次級側的等效模型來檢測轉換器的輸出電壓是否符合穩壓規格。此外，本論文將提出三種設計雙組輸出轉換器的回授策略，以解決轉換器上元件的誤差值所造成之交互穩壓的問題。
最後以半橋和順向式轉換器作為實例，來說明上述各種回授電路的設計方法，而後所得的雙組輸出電壓落點，均能接近回授理論值所示之結果。

Abstract
Two-output power converter topology are widely used in the power electronics applications. However, the cross regulation between the two outputs in steady state DC level has confused the engineers in the long past. The design issues normally involve iterative trial-and-eror processes for the engineers to come up with no more than a fair result.
In this dissertation, the non-ideal characteristics in the secondaries of a double-output power converter are discussed. Also the effects to the cross regulation of the double outputs are addressed and the design considerations to solve the above problem are proposed. From the results, a rectangular-axis method for graphically determining the ratio of the feedback weighting gains and the secondary turns ratio is presented. The output specifications are plotted on a VO1-VO2 plane. The equivalent circuit models of the secondaries are examined to check if the output specifications can be met. Moreover, feedback methods are described, including three feedback schemes to improve the failure of cross regulation caused by the errors of the components which were operated in converters.
Finally, half-bridge and forward converters are respectively implemented in the laboratory. The three feedback schemes are presented and the two output voltages located in the correct lines of the feedback theorems.

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