【作者】 刘春芳；

【导师】 张潮海；

【作者基本信息】 哈尔滨工业大学 ， 电气工程， 2010， 硕士

【摘要】 近年来,随着环境污染的日益严重,传统的环境治理方法已经难以满足目前形势的要求,脉冲功率作为一种新技术,已经成为环境治理方法的重要研究目标之一。高功率脉冲电源是产生高功率脉冲的能量源。本文根据环境治理对于高功率脉冲的需求,设计了一种满足环境净化要求的高功率脉冲电源方案,为脉冲电源装置在环境治理方面的应用提供了依据,同时也为脉冲功率技术在其他领域的应用提供了参考。首先介绍了脉冲电源的初级充电系统,说明了其设计思路,重点论述了全桥逆变器的设计方法,其中包括软开关与硬开关的对比分析,开关器件的选取,全桥移相零电压PWM逆变电路的工作模态及零电压的实现。最后讲述了变压器副边占空比丢失的原因,及开关管IGBT的并联电容与死区时间的设置方法。设计了中间储能系统与磁脉冲压缩系统。通过对中间储能系统主电路工作过程的分析,推导出了其工作参数的计算公式,并通过合理设计脉冲变压器对初级脉冲升压、整形。针对脉冲电源系统的输出指标,采用三级磁脉冲压缩网络,系统的阐述了其工作原理,并对磁开关的设计方法进行了详细的论述,为系统的PSPICE仿真设计提供了理论基础。通过对电源系统各个组成部分的分析,设计了脉冲电源系统的主电路,并基于此电路结构,利用PSPICE仿真软件对系统的各个部分进行全面的仿真,并将得到的仿真结果与预期目标进行对比分析,验证了此设计方案的可行性。搭建硬件电路并将其运用在水中放电处理蓝藻的实验中,进行相关的调试实验,对实验结果进行分析。本文根据环境治理对于高功率脉冲的要求,设计出一种脉冲电源系统,通过PSPCIE仿真与实验的方式验证了该电源输出的脉冲具有高功率、陡上升沿、窄脉宽的特性,能够满足环境治理的要求。同时,为该脉冲电源方案在其他领域的应用提供了参考依据。更多还原

【Abstract】 Recently,with the increasing environmental pollution, the traditional methods of environmental protection can not meet the requirements of current environmental surroundings. As a new technology, pulse power technology has been one important research method of the environmental protection. The high pulse power generator is the power source. So the pulse power generator is designed according to the need of environmental protection. Meanwhile this supply design also provides a reference for the pulse power technology used in other fields.Firstly, the initial pulse charging system is analyzed. The design idea is explained, and the full-bridge phase-shifted zero-voltage PWM inverter is emphasized, including the comparative analysis between soft-switches and hard-switches, the switch device selection, the inverter operation modes, and the zero-voltage realization. And relate why the duty-cycle losses in the secondary transformer side, the setting method of the IGBT parallel capacitors and the dead time.Then the intermediate energy storage and magnetic pulse compression (MPC) system are designed. Through the analysis of its main circuit, the parameter calculating formula of the intermediate energy storage system is derived. The primary pulse is stepped and shaped in the reasonable pulse transformer. The three-stage magnetic pulse compression is designed. Its work principal is described systematically. The design idea of the magnetic switch is discussed in detail, which provides theoretical evidence for the PSPICE simulation of the MPC system.When all its component parts are analyzed, the main circuit of the pulse power supply system is designed. Use PSPICE simulation software to simulate every composing part. The comparison and analysis between the simulation results and the expectation targets verify the feasibility of the supply design. Then the hardware circuit of this supply system is created, which is used in the water discharging experiment of disposing algae cells. The experimental results are analyzed.According to the high power pulse need in the environmental protection, a pulse supply generator is designed. The simulation and experiment results prove that this generator can export the high power pulse, sharp rising edge and short pulse duration, which also offers a reference to use this pulse supply in other applications.更多还原