| 临界模式Boost功率因数校正电路中电感损耗的分析与比较 |
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| 引用本文： | 丁昂,吴新科,钱照明.临界模式Boost功率因数校正电路中电感损耗的分析与比较[J].电工电能新技术,2006,25(3):54-58. |
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| 作者姓名： | 丁昂 吴新科 钱照明 |
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| 作者单位： | 浙江大学,浙江,杭州,310027;浙江大学,浙江,杭州,310027;浙江大学,浙江,杭州,310027 |
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| 摘 要： | 介绍了临界模式功率因数校正电路的工作原理和特点.通过对电感损耗的分析发现,高频电流在磁芯气隙附近产生的邻近磁场会在电感绕组上产生较大涡流损耗.避免在气隙附近绕线可以减少这种涡流损耗.根据绕组分布方式不同设计了5个电感,应用于200W的PFC样机上,通过实验比较,验证了这种新的绕组布置方法的优越性.
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| 关 键 词： | 临界模式 功率因数校正 电感损耗 电感绕组 |
| 文章编号： | 1003-3076（2006）03-0054-05 |
| 收稿时间： | 2005-10-10 |
| 修稿时间： | 2005年10月10 |
Analysis and comparison for inductor loss of the critical conduction mode boost PFC circuit |
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| DING Ang,WU Xin-ke,QIAN Zhao-ming.Analysis and comparison for inductor loss of the critical conduction mode boost PFC circuit[J].Advanced Technology of Electrical Engineering and Energy,2006,25(3):54-58. |
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| Authors: | DING Ang WU Xin-ke QIAN Zhao-ming |
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| Affiliation: | Zhejiang University, Hangzhou 310027, China |
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| Abstract: | The working principle and characteristic of the Boost power factor correction(PFC) circuit operating in critical conduction mode are investigated.Also core and winding loss of Boost inductor in this circuit is analyzed.In this application,it is found that fringing fields associated with high frequency current pulses cause much eddy current losses in windings of the inductor.By avoiding winding around gaps,the eddy current losses can be minimized.A finite-element analysis(FEA's) is used to investigate the magnetic flux lines and density distribution around cores with traditional and improved winding structures.Finally,five inductors with different winding structures are built and compared.The proposed winding structure is verified with measurements on prototype operating in a 200W PFC converter. |
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| Keywords: | critical conduction mode power factor correction inductor loss inductor winding |
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