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一种新型宽范围ZVS三电平全桥DC/DC变换器
引用本文:张心波,张一鸣,付强,庞连路,李亮亮.一种新型宽范围ZVS三电平全桥DC/DC变换器[J].电气自动化,2017(5):3-5.
作者姓名:张心波  张一鸣  付强  庞连路  李亮亮
作者单位:北京工业大学信息学部,北京,100124
基金项目:获得海斗深渊区可控源海洋电磁发射装备关键技术研究专项
摘    要:现有的DC/DC变换器存在以下缺点:低功率、低效率和很差的负载适应能力。对此提出了一种新型全桥三电平DC/DC可控源电路,高频变压器的副边有三组绕组,为了提高输出电流,采用两个降压绕组并联整流输出;可控源电路采用不对称移相PWM控制方式,换流电感串接在第三个降压绕组上,空载或轻载时换流电感向滞后桥臂提供换流能量,保证在整个功率范围内实现软开关。通过实验验证提出的DC/DC变换器具有输入电压高、宽范围实现ZVS、高效率的优点。

关 键 词:软开关  三电平  DC/DC变换器  全桥电路  PWM
修稿时间:2017/2/24 0:00:00

A Novel Three-level Full-Bridge DC-DC Converter with Wide ZVS Range
Zhang Xinbo,Zhang Yiming,Fu Qiang,Pang Lianlu and Li Liangliang.A Novel Three-level Full-Bridge DC-DC Converter with Wide ZVS Range[J].Electrical Automation,2017(5):3-5.
Authors:Zhang Xinbo  Zhang Yiming  Fu Qiang  Pang Lianlu and Li Liangliang
Institution:The Information Department,Beijing University of Technology,Beijing 100124,China,The Information Department,Beijing University of Technology,Beijing 100124,China,The Information Department,Beijing University of Technology,Beijing 100124,China,The Information Department,Beijing University of Technology,Beijing 100124,China and The Information Department,Beijing University of Technology,Beijing 100124,China
Abstract:Existing DC-DC converter has some shortcomings,such as low-power,low-efficiency,andpoor load adaptability.For which a novel soft-switching three-level DC-DC converter is proposed,a step-down winding in secondary side of high-frequency transformer in series with commutation inductance is added to en-sure the devices soft switching in the full power scope using asymmetrical phaseshift PWM control.The operation process and characteristics of the circuit are an-alyzed,and a prototype is completed.Experimental results verify the proposed DC-DC converter with high input voltage,wide ZVS range and high efficiency.
Keywords:softswithing  three-level  DC-DC converter  full-bridge  PWM
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