| Boost-Flyback单级PFC变换器 |
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| 引用本文： | 姚凯,阮新波.Boost-Flyback单级PFC变换器[J].南京航空航天大学学报,2009,41(4). |
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| 作者姓名： | 姚凯 阮新波 |
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| 作者单位： | 南京航空航天大学自动化学院,南京,210016 |
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| 基金项目： | 全汉电能技术研发有限公司资助项目 |
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| 摘 要： | 设计Boost-Flyback单级功率因数校正(Power factor correction,PFC)变换器主要应着眼于两点:一是功率因数(Power factor,PF)值要求;二是直流母线电压.为了给设计提供依据,本文详细推导了其功率因数及储能电容电压表达式,分析了它们与电路参数的关系,定量地给出变换器达到所需PF值的条件,指出当后IFlyback工作在电流断续模式(Discontinuous current mode.DCM)时,储能电容电压不随负载变轻而上升,避免了功率器件电压应力过高的问题.最后设计了PF>0.9的原理样机,通过实验验证了分析的正确性.
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| 关 键 词： | 变换器 电流断续模式 储能电容电压 |
Boost-Flyback Single-Stage PFC Converter |
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| Yao Kai,Ruan Xinbo.Boost-Flyback Single-Stage PFC Converter[J].Journal of Nanjing University of Aeronautics & Astronautics,2009,41(4). |
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| Authors: | Yao Kai Ruan Xinbo |
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| Institution: | College of Automation Engineering;Nanjing University of Aeronautics & Astronautics;Nanjing;210016;China |
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| Abstract: | To design the Boost-Flyback single-stage power factor correction(PFC) converter,two issues can be considered:the first one is power factor(PF),the second one is the DC bus voltage.The PF and DC bus voltage of the Boost-Flyback single-stage PFC converter are calculated and their relationship with the circuit parameter is analyzed.When the Flyback works in discontinuous current mode(DCM),the bulk capacitor voltage is unchange with the load,thus the high voltage stress problem is avoided.The analysis is verifi... |
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| Keywords: | Boost-Flyback |
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