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Simplified model predictive control with variable weighting factor for current ripple reduction

机译:具有可变加权因子的简化模型预测控制,可降低电流纹波

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摘要

Finite control set model predictive control evaluates a predefined cost function for each switching state of power converter. In addition to reference tracking term, cost function can include a term for switching frequency reduction. Small value for the weighting factor of switching reduction term cannot reduce switching frequency effectively and the great value results in reference tracking failure and increase current ripple. In this study a variable weighting factor based on current ripple is obtained and applied to the cost function. The value of weighting factor changes with the position and magnitude of reference voltage. Simulation and experimental results verify the effectiveness of proposed method.
机译:有限控制集模型预测控制为功率转换器的每个开关状态评估预定义的成本函数。除参考跟踪项外,成本函数还可以包括用于降低开关频率的项。开关减小项的加权因子的较小值不能有效地降低开关频率,而较大的值会导致参考跟踪失败并增加电流纹波。在这项研究中,获得了基于电流纹波的可变加权因子,并将其应用于成本函数。加权因子的值随参考电压的位置和大小而变化。仿真和实验结果验证了该方法的有效性。

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