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首页> 外文学位 >Contribution a la modelisation et au reglage des redresseurs triphases non polluants unidirectionnels de type elevateur et a frequence de commutation fixe (French text).
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Contribution a la modelisation et au reglage des redresseurs triphases non polluants unidirectionnels de type elevateur et a frequence de commutation fixe (French text).

机译：有助于对电梯类型且开关频率固定的无污染单向三相整流器进行建模和调整（法文）。

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摘要

Three-phase AC-to-DC converters are increasingly designed to ensure a high power quality and a good DC voltage regulation performance. Nevertheless, problems related to their control process still exist. Although the hysteresis-based control is widely used in power electronics applications, it suffers from major drawbacks due to the dependency of the switching frequency on the system parameters, the operating conditions and time. Another control approach known as the Pulse-Width-Modulation (PWM) technique offers a fixed-switching-frequency operation and appears, therefore, more suitable for these applications. Nevertheless, its implementation requires basically the knowledge of a mathematical model that represents accurately the converter. The availability of such models is yet limited to DC-DC and AC-DC bidirectional converters. This thesis extends well-known modeling techniques, using averaging approach, to unidirectional three-phase rectifiers. For this purpose, two topologies are considered: the current injection rectifier and the three-switch three-level rectifier. These topologies are characterized both by a low number of active switches, simple control, low cost, high robustness and high efficiency.; Systematically designed control laws, given by the well-developed control theory, are then applied to the proposed models. The validity of the models and the performance of the control system are verified either numerically, using computer simulation tools, or experimentally through real-world measurements.; This report is divided into five chapters. In chapter 1, a review of the most popular high power quality boost-type rectifiers is presented, and the advantages of the unidirectional three-phase topologies are emphasized. In chapter 2, a comparative study of control techniques, control laws and modeling approaches is elaborated. In chapter 3, a linear control scheme is developed for a two-stage single-phase boost rectifier. The performance of the converter in the steady state and transient regimes is analyzed. The input impedance and audio-susceptibility of the converter are also computed and analyzed. In chapter 4, the modeling of a current-injection three-phase rectifier is proposed. A small-signal representation is developed and the corresponding transfer functions are computed and validated, firstly, by numerical simulations using the Power System Blockset of Matlab/Simulink and, secondly, through experimental results obtained from a 2 kW-laboratory prototype. The proposed model is then used in the design of several control schemes, which are implemented separately. A comparative evaluation of the applied control laws shows the superiority of the nonlinear multiple loops approach over the other ones. Finally, in chapter 5, a new modeling approach and a nonlinear control scheme are proposed for the three-switch three-level three-phase rectifier. The performance of the controlled converter is analyzed numerically.
机译：三相AC-DC转换器的设计日益完善，以确保高电能质量和良好的DC电压调节性能。但是，仍然存在与其控制过程有关的问题。尽管基于滞后的控制已广泛用于电力电子应用，但由于开关频率对系统参数，工作条件和时间的依赖性，它具有主要缺点。另一种称为脉冲宽度调制（PWM）技术的控制方法提供了固定的开关频率操作，因此似乎更适合这些应用。然而，其实现基本上需要掌握准确表示转换器的数学模型的知识。此类模型的可用性仍仅限于DC-DC和AC-DC双向转换器。本文采用平均法将众所周知的建模技术扩展到单向三相整流器。为此，考虑两种拓扑：电流注入整流器和三开关三电平整流器。这些拓扑的特点是有源开关数量少，控制简单，成本低，鲁棒性高和效率高。然后，将由发达的控制理论给出的系统设计的控制律应用于所提出的模型。使用计算机仿真工具以数值方式验证模型的有效性和控制系统的性能，或者通过实际测量以实验方式进行验证。该报告分为五章。在第一章中，对最流行的高功率质量升压型整流器进行了回顾，并强调了单向三相拓扑的优势。在第二章中，对控制技术，控制律和建模方法进行了比较研究。在第三章中，针对两级单相升压整流器开发了线性控制方案。分析了转换器在稳态和瞬态状态下的性能。还计算并分析了转换器的输入阻抗和音频敏感性。在第四章中，提出了电流注入三相整流器的建模。首先，通过使用Matlab / Simulink的Power System Blockset进行数值模拟，然后通过从2 kW实验室原型获得的实验结果，开发出小信号表示并计算和验证相应的传递函数。然后，将所提出的模型用于几种控制方案的设计中，这些方案分别实现。对所应用控制律的比较评估表明，非线性多回路方法优于其他方法。最后，在第五章中，为三开关三电平三相整流器提出了一种新的建模方法和一种非线性控制方案。对受控变换器的性能进行了数值分析。

著录项

  • 作者

    Kanaan, Hadi Youssef.;

  • 作者单位

    Ecole de Technologie Superieure (Canada).;

  • 授予单位 Ecole de Technologie Superieure (Canada).;
  • 学科 Engineering Electronics and Electrical.
  • 学位 Ph.D.
  • 年度 2002
  • 页码 343 p.
  • 总页数 343
  • 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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