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首页> 外文学位 >Control and topologies for power converters: I . One-cycle control of three-phase power converters. II . New resonant dc-dc converters.
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Control and topologies for power converters: I . One-cycle control of three-phase power converters. II . New resonant dc-dc converters.

机译：电源转换器的控制和拓扑：I。三相功率转换器的单周期控制。二。新型谐振DC-DC转换器。

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摘要

Part I. Research and applications of PFC rectifiers, APF, STATCOM, and GCI using Voltage-Source Inverters (VSI) have attracted a great attention due to the increased energy awareness and power-quality concern in the global. Previous theory and experiments have demonstrated that One-Cycle control is capable of controlling all above converters, featuring excellent performance, simple circuitry, and low cost. In light of the great advantages of OCC based controller, in this thesis it has been further studied and extended to control four-quadrant power flow, to work at unbalance conditions, and to control multi-level VSIs.; The study on the four-quadrant power flow results a universal vector-control method, which can be realized with a simple universal circuit. Moreover, the unified One-Cycle Controller can realize the modular design of PFC, APF, STATCOM, zero-load operation of PFC rectifier, natural bidirectional rectifier/inverter, and three-phase converters with combination of P and Q output.; The study on the converter's unbalance operation is implemented by an three-phase APF, and the results indicate that (1) when the line voltage is unbalanced, the line currents will be sinusoidal and follow the non-zero sequence components of the line voltage; and (2) when the load is unbalanced, e.g. one phase is disconnected, the APF with OCC control can automatically generate harmonic and unbalanced reactive currents to cancel those from nonlinear unbalanced load to keep the line currents balanced and with unit-power-factor.; The study on three-phase three-level power converters results several circuit level decoupling methods, and each decoupling strategy has its eminent characteristics that can be tailored to a variety of needs. Study also proves that in the proposed APFs, the voltage on the two output capacitors can be automatically balanced.; Part II. The development of modern semiconductor manufacturing technology brings forward stringent demands to the new generation Voltage Regulation Module (VRM) for microprocessors. To satisfy the requirements, the most suitable converter topology's features are sketched in this thesis, then based on the sketched features a multiphase LLC series resonant converter is proposed. A systematic theoretical study indicate that the proposed multiphase LLC resonant converter features: (1) Zero voltage switching for both inverter and rectifier switches; (2) Wide load range; (3) Limited frequency range; (4) Fast dynamic response; (5) High efficiency; and (6) Automatic current sharing ability. All of these features ensure that the proposed multiphase LLC resonant converter is a good VRM candidate for next generation microprocessors. (Abstract shortened by UMI.)
机译：第一部分，由于全球对能源意识和电能质量的关注日益增加，使用电压源逆变器（VSI）的PFC整流器，APF，STATCOM和GCI的研究和应用引起了极大的关注。先前的理论和实验表明，单周期控制能够控制所有上述转换器，并具有出色的性能，简单的电路和低成本。鉴于基于OCC的控制器的巨大优势，本文对其进行了进一步的研究和扩展，以控制四象限潮流，在不平衡条件下工作以及控制多级VSI。对四象限功率流的研究得出了通用矢量控制方法，该方法可以通过简单的通用电路来实现。而且，统一的单周期控制器可以实现PFC，APF，STATCOM的模块化设计，PFC整流器的零负载运行，自然双向整流器/逆变器以及具有P和Q输出组合的三相转换器。对变频器不平衡运行的研究是通过三相APF进行的，结果表明：（1）当线路电压不平衡时，线路电流将为正弦波并遵循线路电压的非零序分量； （2）当负载不平衡时，例如一相断开后，带有OCC控制的APF可以自动生成谐波和不平衡无功电流，以抵消非线性不平衡负载中的电流，从而保持线路电流平衡并具有单位功率因数。对三相三电平功率转换器的研究得出了几种电路级去耦方法，每种去耦策略都有其突出的特点，可以针对各种需求进行定制。研究还证明，在提出的APF中，两个输出电容器上的电压可以自动平衡。第二部分现代半导体制造技术的发展对用于微处理器的新一代电压调节模块（VRM）提出了严格的要求。为了满足这些要求，本文概述了最合适的转换器拓扑结构的特征，然后基于该草图特征，提出了一种多相LLC串联谐振转换器。一项系统的理论研究表明，提出的多相LLC谐振转换器具有以下特点：（1）逆变器和整流器开关均为零电压开关； （2）负载范围广； （3）有限的频率范围； （4）动态响应快； （5）效率高； （6）自动均流能力。所有这些功能确保所提出的多相LLC谐振转换器是下一代微处理器的良好VRM候选产品。 （摘要由UMI缩短。）

著录项

  • 作者

    Jin, Taotao.;

  • 作者单位

    University of California, Irvine.;

  • 授予单位 University of California, Irvine.;
  • 学科 Engineering Electronics and Electrical.
  • 学位 Ph.D.
  • 年度 2005
  • 页码 236 p.
  • 总页数 236
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 无线电电子学、电信技术;
  • 关键词

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