双管正激变换器多种导磁材料电磁集成*

doi:10.11985/2022.01.019

电气工程学报 ›› 2022, Vol. 17 ›› Issue (1): 148-155.doi: 10.11985/2022.01.019

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双管正激变换器多种导磁材料电磁集成^*

李洪珠(), 范茏茏()

辽宁工程技术大学电气与控制工程学院葫芦岛 125105

收稿日期:2021-10-04 修回日期:2022-01-10 出版日期:2022-03-25 发布日期:2022-05-06
通讯作者: 范茏茏 E-mail:lhz_98@163.com;fll_97@163.com
作者简介:李洪珠,男,1974年生,博士,教授。主要研究方向为电力电子及磁集成技术。E-mail： lhz_98@163.com
基金资助:
*辽宁省自然科学基金资助项目(2019-M5-159(19-1062))

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

LI Hongzhu(), FAN Longlong()

School of Electrical and Control Engineering, Liaoning Technical University, Huludao 125105

Received:2021-10-04 Revised:2022-01-10 Online:2022-03-25 Published:2022-05-06
Contact: FAN Longlong E-mail:lhz_98@163.com;fll_97@163.com

摘要/Abstract

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60 W的样机,验证了该磁件应用的合理性。

关键词: 双管正激变换器, 电磁集成, 多种导磁材料, 软开关

Abstract:

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.

Key words: Double switch forward converter, electromagnetic integration, a variety of magnetic materials, soft switch

中图分类号:

TM46

李洪珠, 范茏茏. 双管正激变换器多种导磁材料电磁集成^*[J]. 电气工程学报, 2022, 17(1): 148-155.

LI Hongzhu, FAN Longlong. Dual-tube Forward Converter with Electromagnetic Integration of Various Magnetic Materials[J]. Journal of Electrical Engineering, 2022, 17(1): 148-155.

图/表 17

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参考文献 15

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参数	数值
中柱有效截面积A_ez/cm²	0.597
边柱有效截面积A_ec/cm²	0.35
磁心体积V_e/cm³	3.92
磁心常数C₁/mm^-1	1.089
无气隙等效电感因数A_L/(nH/N²)	2 400

参数	数值
参数	原边绕组	副边绕组	电感绕组
匝数	28	14	7
励磁线线径	0.1×130	0.1×400	0.1×400
最大耐流值/A	5.105	15.705	15.705

参数	计算值	仿真值
变压器原边电感L_p/μH	227.26	229.97
变压器副边电感L_s/μH	56.815	56.947
滤波电感L_o/μH	14.400	15.434
谐振电感L_r/μH	19.900	19.765
谐振电容C_r/nF	3.000	2.991
铁心损耗P_core-loss/W	1.435	1.465
绕组损耗P_ohmic-loss/W	2.063	2.301

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

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