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首页> 外文会议>2013 48th International Universities' Power Engineering Conference >Reduction of circulating current flow in parallel operation of APF based on hysteresis current control
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Reduction of circulating current flow in parallel operation of APF based on hysteresis current control

机译：基于磁滞电流控制减少APF并联运行中的循环电流

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Capacity enhancement and operation flexibility are two of the important limitations of the centralized Shunt Active Power Filter (APFsh) unit. This can be overcome by multiple and parallel APFsh units (in distributed mode) with a common DC link. In that case, a circulating current (CC) can flow. In the case of a hysteresis current controller based multiple APFsh units in load sharing mode, this CC control is not yet achieved. One of the difficulties of this CC flow control or reduction is the variable switching frequency of the APFsh units. In this paper, the model for CC flow is derived by the switching dynamics study of the APFsh units. Detailed simulation and real time study show that the reduction of CC flow can be achieved at an acceptable level by proper selection of design parameters.
机译：容量增强和操作灵活性是集中式并联有源功率滤波器（APFsh）单元的两个重要限制。可以通过具有公共DC链路的多个并行APFsh单元（处于分布式模式）来克服这一问题。在这种情况下，循环电流（CC）可以流动。在基于负载共享模式的多个APFsh单元的磁滞电流控制器的情况下，此CC控制尚未实现。这种CC流量控制或降低的困难之一是APFsh单元的可变开关频率。本文通过APFsh单元的切换动力学研究推导了CC流模型。详细的仿真和实时研究表明，通过适当选择设计参数，可以将CC流减少到可接受的水平。

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