交錯式雙開關順向轉換器之數位控制器的研製

Design and Implementation of Digital Controller for Interleaved Two-Switch Forward Converter

吳家忠(Chia-Chung Wu)

指導教授 ： 賴炎生

國立臺北科技大學/電資學院/電力電子產業研發碩士專班/碩士(2008年)

https://doi.org/10.6841/NTUT.2008.00589

摘要

本文旨在研製一個數位控制的交錯式雙開關順向轉換器，此轉換器的優點包括：降低功率開關上的電壓應力、不需洩磁繞組、降低輸出電流漣波以及功率開關達到零電壓導通。
為了設計數位控制器，本文推導交錯式雙開關順向轉換器的小訊號數學模式，並以模擬結果驗證控制器的設計，最後以Texas Instruments DSP (TMS 320 F2812)為控制平台，完成數位控制器設計。本文所研製之轉換器的規格如下：
輸入電壓： 48伏
輸出電壓： 12伏
額定功率： 240瓦
切換頻率： 100 kHz
由實驗結果證實，交錯式雙開關順向轉換器有效降低輸出電流漣波以及功率開關的電壓應力，且整體效率皆達87％以上。

關鍵字

交錯式順向轉換器 ； 數位控制器

並列摘要

The objective of this thesis is to design and implement interleaved two-switch forward converter controlled by digital processor. The advantages of the designed converter include reduction of output current ripple, no need of flux reset winding, reduction of voltage stress of power devices, and zero-voltage turn-on.
In order to design the digital controller, the small signal model of the converter is derived and confirmed by simulation results. A digital signal processor, TMS 320 F2812, is used as the controller to realize the designed digital controller. The specifications of the design and implemented converter are: input voltage = 48 V, output voltage = 12 V, rated power = 240 W and switching frequency = 100 kHz.
Experimental results show that the interleaved two-switch forward converter can significantly reduce the output current ripple and voltage stress of power devices. The measured efficiency is greater than 87%. The experimental results confirm the design and implementation of the converter.

並列關鍵字

Interleaved Forward Converter ； Digital Controller

參考文獻

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