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Model Predictive Direct Power Control for Active Power Decoupled Single-Phase Quasi-Z -Source Inverter

机译:有功功率解耦单相准Z源逆变器的模型预测直接功率控制

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The active power filter (APF) that consists of a half-bridge leg and an ac capacitor is integrated in the single-phase quasi-Z-source inverter (qZSI) in this paper to avoid the second harmonic power flowing into the dc side. The capacitor of APF buffers the second harmonic power of the load, and the ac capacitor allows highly pulsating ac voltage, so that the capacitances of both dc and ac sides can be small. A model predictive direct power control (DPC) is further proposed to achieve the purpose of this new topology through predicting the capacitor voltage of APF at each sampling period and ensuring the APF power to track the second harmonic power of single-phase qZSI. Simulation and experimental results verify the model predictive DPC for the APF-integrated single-phase qZSI.
机译:本文将由半桥臂和交流电容器组成的有源功率滤波器(APF)集成在单相准Z源逆变器(qZSI)中,以避免二次谐波功率流入dc侧。 APF的电容器缓冲负载的二次谐波功率,而交流电容器则允许高脉动的交流电压,因此直流侧和交流侧的电容都可以很小。进一步提出了一种模型预测直接功率控制(DPC),通过预测每个采样周期的APF电容器电压并确保APF功率跟踪单相qZSI的二次谐波功率来实现这种新拓扑的目的。仿真和实验结果验证了APF集成单相qZSI的模型预测DPC。

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