李姝玉;于弘洋;葛菁;赵国亮;邓占锋;徐永海;

• 1:先进输电技术国家重点实验室(全球能源互联网研究院有限公司)
• 2:新能源电力系统国家重点实验室(华北电力大学)

摘要(Abstract)：

研究工/低频电网互联下双端口模块化多电平矩阵变换器的特性是实现变换系统轻型化设计的基础,同时也为变换器参数选定提供理论依据。首先分析了工/低频系统和变换器电压电流之间的关系,揭示了电容电压波动产生的机理;其次根据工/低频功率耦合下模块电容电压波动量提出电容值计算公式,指出电容的选定与工/低频系统电压幅值比、频率以及功率因数有着密不可分的联系;最后从经济性角度分析了工/低频系统电压幅值比以及频率对模块电容电压的影响,再从变换器稳定运行角度,探索两端系统功率因数与模块电容之间的关系。仿真计算验证了上述理论分析的正确性,分析结果可为实际工程中电容值的选取以及换流系统的设计提供理论基础。

关键词(KeyWords)： 模块化多电平矩阵变换器;模块电容值;电压幅值比;系统频率

Abstract:

Keywords:

基金项目(Foundation): 国家电网有限公司科技项目“典型场景下低频输电基础技术研究”(5200-201919266A-0-0-00)~~

作者(Author): 李姝玉;于弘洋;葛菁;赵国亮;邓占锋;徐永海;

Email:

DOI: 10.13335/j.1000-3673.pst.2019.1575

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