应用于交流充电桩EFT测试的高压脉冲源的研究

发布时间：2018-07-15 16:22

【摘要】：电动汽车近些年来越来越受到大众的青睐,它是以电能为动力的交通工具,因而作为给电池提供电能的充电桩是不可或缺的装置,在充电过程中起着举足轻重的作用。对充电桩进行电磁兼容性测试,让充电桩在复杂的电磁环境中能正常稳定的工作,也是充电桩研究的一方面。一般对充电桩的电磁兼容测试分为三种:浪涌测试、静电放电测试、电快速瞬变脉冲群测试,其中电快速瞬变脉冲测试(又称EFT测试)是较为严格的一种。本课题主要研制了一种用于交流充电桩EFT测试的高压脉冲源,它产生的EFT脉冲信号具有幅值高、前沿陡、脉冲窄等特点,符合充电桩EFT测试的标准。为了降低脉冲源的体积与质量,提高使用的效率,本文采用的方法是用高压开关电源代替传统的线性电源。其次,为了减小脉冲源的电磁辐射,采用滤波器来抑制干扰信号的传播,使用光耦隔离电路来提高脉冲源的电磁兼容性。全文分为以下几个部分进行分析:首先介绍了国内外脉冲功率技术的研究现状,并且搭建交流充电桩EFT测试模型;其次分析了充电桩电磁干扰模型与耦合路径,再重点分析了以氢闸流管作为主开关器件的脉冲源的软硬件设计,包括主体电路的建模与MATLAB仿真、脉冲源发生器的高压直流部分、全桥驱动电路与脉冲变压器的设计,基于TMS320F2812为控制器的软件设计、基于VB6.0软件的上位机的设计等;最后对设计的高压脉冲源进行了系统的试验分析。
[Abstract]:Electric vehicle (EV) is more and more popular in recent years. It is a vehicle powered by electric energy, so as an indispensable device to provide electric energy to the battery, it plays an important role in the charging process. It is also one of the aspects of the research of charging pile to test the EMC of charging pile so that the charging pile can work stably in complex electromagnetic environment. Generally, there are three kinds of EMC test for charging pile: surge test, electrostatic discharge test, electric fast transient pulse group test, among which the electric fast transient pulse test (EFT test) is a more strict one. In this paper, a high voltage pulse source for EFT test of AC charging pile is developed. The EFT pulse signal produced by the source has the characteristics of high amplitude, steep front edge and narrow pulse, which accords with the standard of EFT test of charging pile. In order to reduce the volume and quality of the pulse source and improve the efficiency of use, the method used in this paper is to replace the traditional linear power supply with the high-voltage switching power supply. Secondly, in order to reduce the electromagnetic radiation of the pulse source, the filter is used to suppress the propagation of the interference signal, and the optocoupler isolation circuit is used to improve the electromagnetic compatibility of the pulse source. The paper is divided into the following parts: firstly, the research status of pulse power technology at home and abroad is introduced, and the EFT test model of AC charging pile is built. Secondly, the electromagnetic interference model and coupling path of charging pile are analyzed. The hardware and software design of the pulse source with hydrogen thyratron as the main switch device is analyzed, including the modeling and MATLAB simulation of the main circuit, the high voltage DC part of the pulse source generator, the design of the full-bridge drive circuit and the pulse transformer. The software design based on TMS320F2812 controller and the host computer based on VB6.0 software are designed. Finally, the design of high voltage pulse source is systematically analyzed.
【学位授予单位】：安徽工业大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：U491.8;TM910.6

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