非接触气隙隔离DC/DC变换器设计
毕业论文关键词 非接触电能传输 反激式 可旋转变压器 DC/DC变换器 松耦合Title Contactless Air gap isolation DC/DC Converter Abstract As a new electricity transfer method, contactless energy transfer (CET) has been focused on lately. Compare with traditional transfer ways, CET doesn't need wires and plugs, which avoids direct touch between electrical equipments and the power source, hence it has advantages in safety, reliability, service life, maintenance costs and so on. In many applications electricity has to be transferred to rotating parts. Usually a detachable transformer with air gap isolation is used. This paper discusses a rotating power transfer system by means of contactless energy transfer and the DC/DC converter. A rotating transformer is made as a replacement for wires and slip rings. A flyback topology with an output DC/DC converter has been chosen. A pot core geometry is used for the rotating transformer. And a rotating contactless power transfer system achieving several Watts is presented. Both transformer and electronics designs are presented. A proof-of-concept prototype has been build and tested to verify the feasibility of contactless power transmission. Keywords Contactless Energy Transfer Flyback Rotating Transformer DC/DC Converter Loosely Couple
目次
摘要 I
Abstract . II
目次.. III
插图和表格清单 VII
1 绪论.. 1
1.1 旋转体间的电能传输... 1
1.2 导电滑环存在的问题... 1
1.3 非接触电能传输系统... 1
1.3.1 电感耦合 CET原理 .. 2
1.3.2 旋转运动中变压器线圈结构 3
1.3.3 CET 在中小功率中的应用 ... 3
1.3.4 变换器拓扑结构 4
1.3.5 非接触供电的优势 5
1.4 本文主要的工作... 6
2 变换器原理.. 7
2.1 非接触气隙隔离 DC/DC 变换器设计技术要求 7
2.2 开关稳压电源... 7
2.2.1 开关电源的应用与发展 7
2.2.2 开关电源的主要特点 7
2.2.3 开关电源的电路结构 8
2.3 单端反激式变换器... 9
2.3.1 单端反激变换器工作原理 9
2.3.2 单端反激变换器工作模式.. 11
2.3.3 控制电路类型.. 11
2.4 本章小结. 12
3 变换器变压器 13
3.1 开关电源高频变压器. 13
3.1.1 高频变压器概述.. 13
3.1.2 单极性高频变压器.. 13
3.1.3 高频变压器电磁参数、结构设计.. 16