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首页> 外文会议>Annual Conference of the IEEE Industrial Electronics Society >Current output control strategy based on current reference feed-forward for H-bridge cascaded inverter
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Current output control strategy based on current reference feed-forward for H-bridge cascaded inverter

机译：基于电流参考前馈的电流输出控制策略，用于H桥级联逆变器

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摘要

H-bridge cascaded inverter can be used for harmonic compensation in medium and high voltage systems. As the equivalent switching frequency is high, L-type filter is commonly used for H-bridge cascaded inverter. Meanwhile, considering device safety and filtering effect, inductance value of L filter is large. When the command current contains harmonics, especially high harmonics, large connecting inductance L increases the pressure of inner current control ring, and further results in larger current output error and slower response speed. To solve this problem, a harmonic current output control strategy based on current reference feed-forward, is proposed. By predicting the voltage drop on the connecting inductance, the pressure of inner current control ring can be reduced. As a consequence, the harmonic output performance of H-bridge cascaded inverter can be improved. Via theoretical analyses and simulation results, the feasibility and superiority of proposed strategy are verified.
机译：H-Bridge Cascaded逆变器可用于中高压系统中的谐波补偿。随着等效开关频率高，L型滤波器通常用于H桥式逆变器。同时，考虑到设备安全和滤波效果，L滤波器的电感值大。当命令电流包含谐波，尤其是高谐波时，大连接电感L增加内流控制环的压力，并进一步导致电流输出误差和较慢的响应速度。为了解决这个问题，提出了一种基于当前参考前馈的谐波电流输出控制策略。通过预测连接电感上的电压降，可以减小内部电流控制环的压力。结果，可以提高H桥式逆变器的谐波输出性能。通过理论分析和仿真结果，验证了所提出的策略的可行性和优越性。

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