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机构地区:[1]华南理工大学广州学院,广东广州510800 [2]华南理工大学自动化科学与工程学院,广东广州510640
出 处:《大功率变流技术》2013年第4期9-17,共9页HIGH POWER CONVERTER TECHNOLOGY
摘 要:针对晶闸管变流器存在的谐波电流及无功功率问题,文章提出了具有功率减少的晶闸管24脉波变流器的一种电路方案。介绍了变流器的结构组成及工作原理,分析了常规触发模式和功率最优触发模式的换流过程,导出了其数学模型及逆变区安全换流的最小逆变角。此外,对触发角调节器的功能及动作过程进行了论述,并给出了实测的负载电压波形及实验数据。实验结果表明,理论分析与实际测量结果相一致。In view of these problems on the harmonic current and the reactive power loss in thyristor converter, a new main circuit scheme for 24-pulse thyristor converter with saving of power is presented in this paper. The configuration and operating principle of the converter are introduced. Commutating processes on both the conventional mode and the optimal power mode are analyzed. The mathematics model and the minimum inverting angle of safety commutation on the inverting region are derived too. Moreover, the function and operating process of firing angle regulator are discussed. Finally, the tested load voltage waveforms and experimental data are given. Experimental results agreement with the theoretical analysis.
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