Z源逆变器研究
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摘要
本文绪论部分首先介绍了逆变器技术及其在电力传动中的应用,阐述了它在国内外的发展现状。主要论述了逆变器的功率流方向,分类,特点,应用场合,以及现在流行的逆变器拓扑的缺陷等。通过分析现存逆变器的缺陷,引出研究新型的逆变器拓扑,改进原有逆变器性能的必要性。接着概要地介绍了新型的Z源变流器的思想,介绍了其拓扑结构、应用场合,进而揭示了本文的研究意义和研究内容。
     本文第二章详细介绍、分析了电压型Z源逆变器的拓扑、工作原理、控制方法和应用等。首先详细介绍了Z源逆变器的电路拓扑、工作原理,然后根据不同的研究角度,详细讨论了电路的控制方法;为了更好的进行系统设计,对电路的开关应力进行了详细地分析。最后,介绍了它在电力传动中的应用,分析了其优点、升/降压机理、工作模式、一个开关周期内的能量流转过程、频谱特性等。
     本文第三章详细介绍了电压型Z源逆变器的设计方法,并给出了仿真和实验结果。Z源逆变器作为新型的逆变器,不但电路结构独特,而且具有良好的特性。本文详细讨论了电压型Z源逆变器的设计方法,包括主电路和控制电路的设计。从多个角度对电路进行了仿真和实验,对电路的性能进行验证。
     本文第四章提出了电流型Z源逆变器电路拓扑,详细分析了其工作原理、控制方法和应用等。根据电路的对偶性原理,本文提出了新型的电流型Z源逆变器。和电压型电路一样,本文也对电流型Z源逆变器进行了相应的分析和讨论。首先详细介绍了其电路拓扑、工作原理,然后根据不同的研究角度,详细讨论了电路的控制方法;为了更好的进行系统设计,对电路的开关应力进行了详细地分析。最后,介绍了它在电力传动中的应用,分析了其优点、升/降压机理、工作模式、一个开关周期内的能量流转过程等。
     本文第五章详细介绍了电流型Z源逆变器的设计方法,并给出了仿真和实验结果。本文详细讨论了电流型Z源逆变器的设计方法,包括主电路和控制电路的设计。从多个角度对电路进行了仿真和实验,对电路的性能进行验证。
     本文第六章提出了Z源交流一交流变流器电路拓扑,介绍了其工作原理、控制方法、器件应力,设计方法等。本文在分析、研究Z源逆变器电路拓扑的基础上,提出了Z源交流-交流变流器电路拓扑,包括电压型、电流型的单相/三相电路拓扑,分别分析了其工作原理,控制方法,优缺点,输入/输出关系,相位偏移,开关器件应力,设计方法,应用场合等,通过仿真和实验对电路的可行性和正确性进行了验证。
     最后,本文对新型的Z源变流器的研究和应用进行了总结和展望,提出了自己对于本方向研究的一些思路,作为今后继续工作和学习的指南。
In the exordium, the thesis introduces inverter and its application in the power transmission system, expounds its state-of-the-art in domestic and overseas. The thesis mainly discusses the power flow direction, classification, characteristic, application of the inverter, and the drawbacks of the popular inverter topology. Afterwards, this paper proposes the demand of studying the novel inverter topology and modifying the performance of the intrinsic inverter. And then introduces the concept of the novel Z-source converter, includes its topology and application. In the end, the significance and contents of the study is introduced.The second chapter of the thesis introduces and analyzes the topology, operating principle, control method and application of the voltage-fed Z-source inverter. In the chapter, the thesis detailed introduces the topology and operating principle of the novel inverter firstly, and then it detailed discusses the control method of the circuit from different point of view;To design the circuit better, this chapter detailed analyzes the switch stress. In the end, an adjustable speed drive system based on voltage-fed Z-source inverter is introduced, its virtue, buck-boost mechanism, operating mode, power flow process over a switching cycle and spectrum characteristic is analyzed.The third chapter of the thesis introduces the design method of the voltage-fed Z-source inverter, and gives many simulation and experimental results. As a novel inverter, the Z-source inverter not only has unique circuit structure, but also has excellent characteristics. This chapter detailed discusses the design method of the voltage-fed Z-source inverter, includes the design method of main circuit and control circuit. In the end, it gives many simulation and experimental results to verify the performance and characteristics of the circuit.The fourth chapter proposes the topology of the current-fed Z-source inverter, detailed introduces and analyzes its operating principle, control method and application, etc. Based on the duality principle, the thesis proposes the novel current-fed Z-source inverter. Alike the case of the voltage-fed Z-source inverter, the thesis also detailed introduces its operating principle firstly, and then it detailed discusses the control method of the circuit from different point of view. To design the circuit better, this chapter detailed analyzes the switch stress. In the end, an adjustable speed drive system based on current-fed Z-source inverter is introduced, its virtue, buck-boost mechanism, operating mode, power flow process over a switching cycle and spectrum characteristic is analyzed.The fifth chapter detailed introduces the design method of the current-fed Z-source inverter, and gives many simulation and experimental results. This chapter detailed discusses the design method of the current-fed Z-source inverter, includes the design method of main circuit and control circuit. In the end, it gives many simulation and experimental results to verify
    the performance and characteristics of the circuit.The sixth chapter of the thesis proposes the Z-source ac-ac converter topology, introduces its operating principle, control method, device stress, design method, etc. Based on the analysis and study of the Z-source inverter topology, the thesis proposes the Z-source ac-ac converter topology, includes voltage-fed and current-fed single phase and three phase circuit, analyzes their operating principle, control method, merits and demerits, the relationship between the input and output voltage, phase shift, device stress, design method, applications, and so on. The validity of the analysis and the feasibility of the circuit are verified by the simulation and experimental results.In the end, the sum-up and expectation of the study and the application of the novel Z-source converter is made, and some idea about the Z-source converter is proposed, and this will be my future directory in research and study.
引文
[1]. 钱照明,张军明,吕征宇,彭方正,汪槱生;“我国电力电子与电力传动面临的挑战与机遇”,电工技术学报,2004年第8期,10~22页。
    [2]. 姜建国等译,“电力电子学与变频传动—技术和应用”,中国矿业大学出版社,1999年9月第1版。
    [3]. Robert W. Erickson, Dragan Maksimovic;"Fundamentals of power electronics (second edition)", 1999.
    [4].(美)博斯(Bose,B.K.)著,“现代电力电子学与交流传动”,机械工业出版社,2003.1。
    [5]. Timothyl. Skvarenina, "The power electronics handbook", CRC Press, 2002.
    [6]. Fang Zheng Peng;"Z-source inverter", Industry Applications, IEEE Transactions on, Volume: 39 Issue: 2, Mar/Apr 2003, Page(s): 504-510.
    [7]. Peng, F.Z.;"Z-source inverter", Industry Applications Conference, 2002. 37th IAS Annual Meeting. Conference Record of the, Volume: 2, 2002, Page(s): 775-781.

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