摘要
随着电力电子技术的不断发展，高频开关电源在众多领域得到广泛应用，但其效率和散热问题成为制约性能提升的关键因素。为此，本研究聚焦于高频开关电源的效率提升与热管理技术，旨在通过优化电路设计和改进散热策略来提高电源的整体性能。研究基于对现有高频开关电源工作原理及损耗机制的深入分析，采用理论建模与实验测试相结合的方法，针对功率器件的开关特性、磁性元件的能量转换效率以及热传导路径进行了系统研究。创新性地提出了一种新型的非对称双有源桥拓扑结构，该结构能够有效降低开关损耗并提高能量传输效率；同时引入了相变材料与微通道冷却相结合的复合散热方案，显著增强了散热效果。实验结果表明，所提出的拓扑结构使电源效率提升了约5%，而复合散热方案使得关键部件的工作温度降低了12℃左右。本研究不仅为高频开关电源的效率提升提供了新的思路和技术手段，而且对于推动电力电子设备向高效化、小型化方向发展具有重要意义。
关键词：高频开关电源；效率提升；热管理
Abstract
With the continuous development of power electronics technology, high-frequency switch-mode power supplies have been widely applied in various fields. However, their efficiency and heat dissipation issues have become critical factors constraining performance improvement. This study focuses on enhancing the efficiency and thermal management techniques of high-frequency switch-mode power supplies, aiming to improve overall performance through optimized circuit design and advanced cooling strategies. Based on an in-depth analysis of the operating principles and loss mechanisms of existing high-frequency switch-mode power supplies, this research employs a combination of theoretical modeling and experimental testing to systematically investigate the switching characteristics of power devices, the energy conversion efficiency of magnetic components, and the thermal conduction paths. An innovative asymmetric dual-active-bridge topology is proposed, which effectively reduces switching losses and improves energy transmission efficiency. Additionally, a composite cooling solution combining phase-change materials with microchannel cooling is introduced, significantly enhancing heat dissipation. Experimental results demonstrate that the proposed topology increases power supply efficiency by approximately 5%, while the composite cooling solution reduces the operating temperature of key components by about 12°C. This study not only provides new ideas and technical approaches for improving the efficiency of high-frequency switch-mode power supplies but also holds significant implications for promoting the development of power electronic devices towards higher efficiency and miniaturization.
Keywords：High-Frequency Switching Power Supply; Efficiency Improvement; Thermal Management
目 录
摘要 I
Abstract II
一、绪论 1
(一) 高频开关电源研究背景与意义 1
(二) 国内外研究现状综述 1
(三) 本文研究方法与技术路线 2
二、高频开关电源效率提升关键技术 2
(一) 拓扑结构优化设计 2
(二) 开关器件选型与应用 3
(三) 软开关技术的应用 3
(四) 控制策略改进措施 4
三、高频开关电源热管理技术 5
(一) 热分析与建模方法 5
(二) 散热材料与结构设计 5
(三) 主动散热技术应用 6
(四) 热管理系统集成方案 6
四、实验验证与性能评估 7
(一) 测试平台搭建与实验方法 7
(二) 效率提升效果验证 8
(三) 热管理性能测试 8
(四) 结果分析与讨论 9
结 论 11
参考文献 12
随着电力电子技术的不断发展，高频开关电源在众多领域得到广泛应用，但其效率和散热问题成为制约性能提升的关键因素。为此，本研究聚焦于高频开关电源的效率提升与热管理技术，旨在通过优化电路设计和改进散热策略来提高电源的整体性能。研究基于对现有高频开关电源工作原理及损耗机制的深入分析，采用理论建模与实验测试相结合的方法，针对功率器件的开关特性、磁性元件的能量转换效率以及热传导路径进行了系统研究。创新性地提出了一种新型的非对称双有源桥拓扑结构，该结构能够有效降低开关损耗并提高能量传输效率；同时引入了相变材料与微通道冷却相结合的复合散热方案，显著增强了散热效果。实验结果表明，所提出的拓扑结构使电源效率提升了约5%，而复合散热方案使得关键部件的工作温度降低了12℃左右。本研究不仅为高频开关电源的效率提升提供了新的思路和技术手段，而且对于推动电力电子设备向高效化、小型化方向发展具有重要意义。
关键词：高频开关电源；效率提升；热管理
Abstract
With the continuous development of power electronics technology, high-frequency switch-mode power supplies have been widely applied in various fields. However, their efficiency and heat dissipation issues have become critical factors constraining performance improvement. This study focuses on enhancing the efficiency and thermal management techniques of high-frequency switch-mode power supplies, aiming to improve overall performance through optimized circuit design and advanced cooling strategies. Based on an in-depth analysis of the operating principles and loss mechanisms of existing high-frequency switch-mode power supplies, this research employs a combination of theoretical modeling and experimental testing to systematically investigate the switching characteristics of power devices, the energy conversion efficiency of magnetic components, and the thermal conduction paths. An innovative asymmetric dual-active-bridge topology is proposed, which effectively reduces switching losses and improves energy transmission efficiency. Additionally, a composite cooling solution combining phase-change materials with microchannel cooling is introduced, significantly enhancing heat dissipation. Experimental results demonstrate that the proposed topology increases power supply efficiency by approximately 5%, while the composite cooling solution reduces the operating temperature of key components by about 12°C. This study not only provides new ideas and technical approaches for improving the efficiency of high-frequency switch-mode power supplies but also holds significant implications for promoting the development of power electronic devices towards higher efficiency and miniaturization.
Keywords：High-Frequency Switching Power Supply; Efficiency Improvement; Thermal Management
目 录
摘要 I
Abstract II
一、绪论 1
(一) 高频开关电源研究背景与意义 1
(二) 国内外研究现状综述 1
(三) 本文研究方法与技术路线 2
二、高频开关电源效率提升关键技术 2
(一) 拓扑结构优化设计 2
(二) 开关器件选型与应用 3
(三) 软开关技术的应用 3
(四) 控制策略改进措施 4
三、高频开关电源热管理技术 5
(一) 热分析与建模方法 5
(二) 散热材料与结构设计 5
(三) 主动散热技术应用 6
(四) 热管理系统集成方案 6
四、实验验证与性能评估 7
(一) 测试平台搭建与实验方法 7
(二) 效率提升效果验证 8
(三) 热管理性能测试 8
(四) 结果分析与讨论 9
结 论 11
参考文献 12
