高功率雙向全橋直流/直流轉換器研製

Design and Implementation of a Bi-directional Full-Bridge DC-DC Converter for High Power Application

廖長鴻(Chang-Hung Liao)

指導教授 ： 黃明熙

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(2010年)

https://doi.org/10.6841/NTUT.2010.00421

摘要

本文是以設計具有高功率之隔離型雙向全橋直流/直流轉換器作為研究核心，其中降壓與升壓模式，分別為相移全橋和具有電流前饋之全橋電路來實現。為克服高頻變壓器之功率限制，因此以並聯多組變壓器來提高輸出功率並嘗試從電路之佈線來降低隔離變壓器之漏感與對多只變壓器並聯路徑進行配置以達到均流之目的。所提之控制策略是以串接之電壓與電流迴路來達到定電壓與定電流輸出控制之目的，為實現所提出之控制策略，建構輸入400V與輸出310V/10 kW之系統並以數位訊號處理器為控制核心，配合週邊電路來進行數位化功率控制，並用組合語言撰寫程式以縮短軟體執行時間，使切換頻率得以提高。最後經由實際的量測來驗證所提之控制策略與系統之有效性。

關鍵字

雙向全橋直流/直流轉換器 ； 變壓器並聯 ； 數位訊號處理器

並列摘要

This thesis is aimed to design a bi-directional full-bridge DC-DC converter for high power application, its buck and boost mode are implemented through phase-shift full-bridge and current-fed full-bridge circuit structure. To overcome the power limitation of high-frequency transformer, therefore multiple transformers connected in parallel are carried out to increase output power. A careful components placement and layout of power circuit are proposed to guarantee well current sharing among paralleled transformers and less leakage inductance. The proposed controller consists of voltage and current regulator in cascade to achieve constant-voltage and constant-current control. In order to facilitate the studies performed in this thesis, a DSP-based converter with necessary peripherals is established to provide 400V input and 10kW/310V output. All the control algorithms are implemented by assembly language to shorten the execution time, and hence the carrier frequency can be increased to reduce the converter volume. After establishing the converter, some measured results are provided to show its successful operation and effectiveness.

並列關鍵字

Bi-directional Full-bridge DC/DC Converter ； Paralleled Transformers ； Digital Signal Processor

參考文獻

[18]李奐侖，「燃料電池用之具有複合能量調控直流-直流轉換器研製」，國立台北科技大學電機工程系碩士學位論文，民國九十八年。

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