1、 I 摘 要 本文分析了三相有源逆变电路(三相半波和全控桥式有源逆变电路)的工作原 理以及控制方法。 分析了相控角的大小以及直流侧负载情况和变换器的工作状态 的关系。采用开环相控触发方式,在Matlab/Simulink下建立了三相全控桥式变 换电路的仿真模型,通过调整其触发角(90) ,并且直流侧接绝对值大于变换 器直流测输出平均电压绝对值的反电动势,使之工作在有源逆变的状态。通过仿真 得到了较为理想的波形结果,仿真结果证明了理论分析的正确性。 关键词:Matlab/Simulink;有源逆变电路;相控 II Abstract The paper focuses on the three-p
2、hase active inversion the circuit by the introduction to the electric circuit of active inversion(Three-phase half-wave and full control of active inverter bridge) and analysis concretely the relation of active inverter output voltage,controlled angle and load characteristics. By using open-loop pha
3、se control mode,it establish simulation Model of Three-phase fully-controlled bridge rectifier and active inverter in the environment of Matlab / Simulink and gain more satisfactory simulation waveforms. Being consistent with the result by conventional method of analysis,the paper confirms the corre
4、ctness of the theoretical analysis and shows high using value of Matlab software in teaching and research of power electronics technology. Keywords: Matlab / Simulink; Active Inverter Circuit; Phase Control 目 录 摘要.I AbstractII 1 绪论1 1.1 Matlab 语言简介1 1.2 有源逆变电路工作原理1 1.3 控制方法2 1.4 三种有源逆变模式单元电路的比较7 2 有源逆变与相控变流器特性9 2.1 有源逆变电路的工作原理.9 2.2 三相桥式整流电路12 2.3 三相有源逆变电路19 2.4 有源逆变的应用28 2.5 小结33 3 三相有源逆变电路的仿真.34 3.1 三相全控桥式有源逆变电路建模34 3.2 仿真结果分析37 4 结论.39 参考文献.40 致谢.41 1 1 绪论 在电力电子技术中,把交流电能变成直流电源的过程称为整流,而把直流电