具有高增益的双相直流变换器设计  

Design of a Dual-phase DC-DC Converter With High Gain

作　　者：胡雪峰[1,2] 龚春英[2] 

机构地区：[1]安徽工业大学安徽省高校电力电子与运动控制重点实验室,马鞍山243002 [2]南京航空航天大学江苏省新能源发电与电能变换重点实验室,南京210016

出　　处：《高电压技术》2012年第3期737-742,共6页High Voltage Engineering

基　　金：国家重点基础研究发展计划(973计划)(2007CB210303)~~

摘　　要：为了获得较高的电压增益,减小开关管的电压、电流应力,将2个中间储能电容与传统双相BOOST升压电路相结合,研究了一种具有高电压增益的新型双相BOOST电路拓扑。该电路具有以下明显的特点:在相同占空比的情况下能有效提高变换器升压增益,可实现更大的功率变换;主开关管和所增加二极管的电压应力只有输出电压的一半,因此对相同功率级的升压电路,不仅可以选择低耐压、高性能的开关器件,而且可以降低电路的损耗。详细分析了新型双相BOOST变换器的工作原理,制作了1台额定功率为1kW原理样机,通过实验验证了理论分析的正确性和可行性。结果表明,所提出的新型双相BOOST变换器性能优良,结构简单,具有实用价值。In order to obtain high step-up static gain,reduce maximum voltage and current stress of switches,a novel dual-phase DC-DC BOOST converter was proposed by combining two diodes and two storage capacitors with traditional dual-phase BOOST converter.Compared with traditional BOOST converter,the proposed converter has lots of advantages： the converter increases the voltage gain at the same duty and improves the power efficiency,the voltage stress of the switches and added diode-capacitor set are only half of the output voltage,so it is very useful to select switches with low voltage and high performance to reduce loss of the circuit for the same power converters.The operation principle of proposed converter was analyzed in the paper,and a prototype of BOOST converter rated at 1 kW had been built to confirm the effectiveness of the converter.The experimental results proved that the proposed dual-phase BOOST converter has a simple and feasible structure with good performance.

关 键 词：双相BOOST变换器 拓扑 储能电容 电压增益 电压应力 高性能 

分 类 号：TM46[电气工程—电器]