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Model-Predictive Direct Power Control With Vector Preselection Technique for Highly Efficient Active Rectifiers

机译：具有矢量预选技术的高效有源整流器的模型预测直接功率控制

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摘要

This paper proposes a novel method to reduce switching losses on the basis of a model-predictive direct power control (MPDPC) method for ac-dc active rectifiers. The main idea is to preselect voltage vectors to decrease switching losses at the next sampling period, and then select one optimum voltage vector among only the preselected voltage vectors to perform direct power control (DPC). The proposed vector preselection scheme enables a predefined cost function to consider only four vectors to control the real and the reactive power at every sampling period. The proposed MPDPC method using only the four preselected vectors stops switching operation of one leg exposed to the largest input current at every sampling period. On the basis of the preselected vectors at each sampling period, the proposed method can effectively reduce the switching losses, as well as accurately perform power control of the active rectifier.
机译：本文基于模型预测直接功率控制（ACD-DC有源整流器），提出了一种减少开关损耗的新方法。主要思想是预选电压矢量以减少下一个采样周期的开关损耗，然后仅在预选的电压矢量中选择一个最佳电压矢量以执行直接功率控制（DPC）。提出的矢量预选方案使预定义的成本函数能够仅考虑四个矢量，以控制每个采样周期的有功功率和无功功率。所提出的仅使用四个预选矢量的MPDPC方法在每个采样周期都停止了暴露于最大输入电流的一只脚的开关操作。基于每个采样周期的预选矢量，该方法可以有效降低开关损耗，并可以对有源整流器进行精确的功率控制。

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