開發一高升壓比之升壓轉換器

Abstract

本研究研製一低壓轉至高壓的升壓轉換器，其輸入電壓為24 V，輸出電壓為200 V及功率為200 W。其電源級拓撲採用升壓轉換器結合電壓倍乘器(Voltage multiplier)。升壓轉換器結合電壓倍乘器與傳統的升壓轉換器相比，同樣使用單開關切換，其控制方法亦與傳統的升壓轉換器相同；而結合電壓倍乘器的升壓轉換器可以提高電壓增益，與功率開關上的電壓應力(Voltage stress)；其次，本研究研製的升壓轉換器結合四層電壓倍乘器，令電路中的所有電感操作在連續導通模式。基於升壓轉換器結合電壓倍乘器之動作原理於本文中進行說明，並結合一商用的脈衝寬度調變控制器，實現低電壓輸入，高電壓輸出之目的。本文將介紹元件之設計方法，以及推算過程。再者，本研究使用電路模擬軟體PSIM，模擬具有4層電壓倍乘器的升壓轉換器，進而與實驗結果相互比較，以驗證所建之模擬電路與所設計之脈衝寬度調變控制器所使用元件參數之正確性。This study developed a low voltage to high voltage boost converter with an input voltage of 24 V, output voltage of 200 V and a power of 200 W. The power stage topology used a boost converter combined with a voltage multiplier. Compared with traditional boost converters, boost converters combined with voltage multipliers also used a single switch, and their control methods were also the same as traditional boost converters; while boost converters combined with voltage multipliers can improve the voltage gain and voltage stress on the power switch; secondly, the boost converter developed in this study was combined with a four-layer voltage multiplier to enable all inductors in the circuit to operate in continuous conduction mode. The operating principle of a boost converter combined with a voltage multiplier was explained in this article, and combined with a commercial pulse width modulation controller to achieve the purpose of low voltage input and high voltage output. This article introduced the design method of components and the calculation process.Furthermore, this study used the circuit simulation software PSIM to simulate a boost converter with a 4-layer voltage multiplier, and then compared it with the experimental results to verify that the built simulation circuit and the designed pulse width modulation controller are correct use of component parameters.