Semi-Flexible Power Control for Grid-Connected Converter

P. Šimek, Martin Bejvl, V. Valouch
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Abstract

The formulas for the calculation of reference grid current components for the grid-connected converter are presented. The selection of the contribution of a negative voltage sequence to the formation of the reference current vector is possible. The current control is based on the GPCC (Generalized Predictive Current Control). The power responses to changes in power references and to grid failures are shown and discussed. The results of simulation and experimental validation are presented. The strategy is able to ensure that limit values of grid current magnitudes are not exceeded.
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并网变流器半柔性功率控制
给出了并网变换器参考栅极电流分量的计算公式。选择负电压序列对形成参考电流矢量的贡献是可能的。电流控制是基于GPCC(广义预测电流控制)。给出并讨论了功率参考值变化和电网故障时的功率响应。给出了仿真和实验验证结果。该策略能够保证不超过电网电流大小的极限值。
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