双管正激变换器多种导磁材料电磁集成  

Dual-tube Forward Converter with Electromagnetic Integration of Various Magnetic Materials

作　　者：李洪珠[1] 范茏茏 LI Hongzhu;FAN Longlong(School of Electrical and Control Engineering,Liaoning Technical University,Huludao 125105)

机构地区：[1]辽宁工程技术大学电气与控制工程学院,葫芦岛125105

出　　处：《电气工程学报》2022年第1期148-155,共8页Journal of Electrical Engineering

基　　金：辽宁省自然科学基金资助项目(2019-M5-159(19-1062))。

摘　　要：传统的软开关双管正激变换器,由于其无源元件数量较多,存在样机体积较大、磁件损耗较高的缺点。为解决这一问题,首先,采用柔性多层带材(Flexible multi-layer foil, FMLF)集成技术实现将体积较大的电容器和电路中的磁元件进行电磁集成,相比于传统磁集成技术,可以进一步缩小无源元件体积,提高磁心的利用率;其次,利用坡莫合金带材分段填充中柱气隙,将其分割为多个等距小气隙,既限制了中柱绕组的漏磁,又缩小了气隙处扩散磁通,有效减少了涡流损耗和扩散磁通产生的绕组损耗,从而有效提高电源的功率密度,满足新能源发展轻量化、小型化、高效化的需求。最后搭建一台60W的样机,验证了该磁件应用的合理性。Due to the large number of passive components, the traditional double switch forward soft switching converter has the disadvantages of larger prototype size and higher magnetic component loss. In order to solve this problem, firstly, the flexible multi-layer foil(FMLF) integration technology is used to realize the electromagnetic integration of large capacitors and magnetic components in circuits. Compared with the traditional magnetic integration technology, the volume of passive components can be further reduced and the utilization ratio of magnetic cores can be improved. Secondly, the use of permalloy strips section fill in column of air gap, it divided into multiple isometric stingy gap, both limits the magnetic leakage of the middle column winding, and narrowed the air-gap diffusion flux, effectively reduce the eddy current loss and winding losses caused by diffused flux, so as to effectively improve the power density of power supply and meet the demand of lightweight, miniaturization and high efficiency of new energy development. Finally, a 60 W prototype is built to verify the rationality of the application of the magnetic component.

关 键 词：双管正激变换器 电磁集成 多种导磁材料 软开关 

分 类 号：TM46[电气工程—电器]