双向功率变换电路仿真与实验研究
本文首先介绍了双向DC-DC变换器的发展现状，指出了其研究热点问题。
其次从双向DC-DC变换器基本变换单元着手，对双向DC-DC变换器基本的工作原理逐一作了阐述，然后通过比较，针对电动汽车车载电源的各种需求从中选取了一种典型的符合要求的拓扑结构作为仿真对象。接着介绍了以双向DC-DC变换器为核心的开关电源的各个模块的电路工作原理以及分析其电路特性，并运用ORCAD电路仿真软件对其中几个典型的电路进行仿真，验证其工作原理。
最后对几种DC-DC变换器进行仿真，验证其工作原理及性能特点，根据仿真结果可知该种DC-DC变换器的拓扑结构适用于电动汽车。
关键词 电动汽车 双向DC-DC变换器 拓扑结构 仿真
毕业论文设计说明书外文摘要
Title Research and simulation of bidirectional power converter circuit
Abstract
With the serious pollution of the city, people begin to realize the importance of environmental protection.We realize that we should save energy.So the car which is the major atmospheric pollution has become the most important part of the air pollution control.The development of electric vehicles is carried out along with it.
First the development of the bidirectional DC-DC converter is introduce, and its hot issues is pointed out.
Secondly, from the basic transformation unit of the bidirectional DC-DC converter, the basic working principle of the bidirectional DC-DC converter is described.
Then a typical topological structure which the typical requirements are accorded is selected.The circuit structure and working principle of each module of the switching power supply are also introduced and the ORCAD circuit simulation software is used to simulate several typical circuits and its working principle is verified.
Finally,the DC-DC converter is simulated, and its working principle and performance is verified.According to the simulation results, the topology of the DC-DC converter is suitable for electric vehicles.
Keywords Electric car Bidirectional DC-DC converter Topology Simulation
目 次
1 绪论 1
1.1 双向DC-DC变换器研究背景及意义 1
1.2双向DC-DC变换器的研究现状 1
1.2.1航空电源系统 1
1.2.2电动汽车 2
1.2.3直流不停电电源系统 3
1.2.4直流功率放大器 4
1.3课题的主要任务 5
2双向DC-DC变换器电路拓扑研究 6
2.1双向DC-DC变换器的概念 6
2.2双向DC-DC变换器的拓扑结构及工作原理 6
2.2.1双向Buck/Boost变换器 6
2.2.2双向Cuk变换器 8
2.2.3双向半桥变换器 8
2.2.4双向SEPIC变换器 9
2.3双向DC-DC变换器的控制策略 10
2.3.1PWM控制技术 10
2.3.2谐振控制技术 11
2.3.3移相控制技术 11
2.4双向DC-DC变换器的比较 12
3充电电源的结构与仿真 13
3.1低通滤波电路 13
3.2桥式整流电路 13
3.3功率因数校正电路 14