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Single-phase cascaded H-bridge multi-level active power filter based on direct current control in AC electric railway application

机译:基于直流控制的交流电铁路单相H桥多电平有源电力滤波器

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摘要

A single-phase cascaded H-bridge multi-level active power filter (APF) to deal with the power quality problems in the AC electric railway systems is presented. The APF can connect to the traction busbar directly without any transformer or resonance branch. The direct current control combining the current decoupling transformation is introduced in the control strategy. This strategy simplifies the control system, enabling the least amount of current measurement with the existing sensors and removing complex current reference extraction algorithms. The control system design process, especially for the parameter tuning, is mainly discussed. Finally, simulation and experimental results verify the effectiveness of the proposed APF system applied in the AC electric railway systems.
机译:提出了一种单相级联H桥多级有源电力滤波器(APF),用于解决交流电铁路系统的电能质量问题。 APF可以直接连接到牵引母线,而无需任何变压器或谐振支路。控制策略中引入了结合电流去耦变换的直流控制。这种策略简化了控制系统,使用现有的传感器可以进行最少的电流测量,并消除了复杂的电流基准提取算法。主要讨论控制系统的设计过程,尤其是参数调整。最后,仿真和实验结果验证了所提出的APF系统在交流电气铁路系统中的有效性。

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