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首页> 外文期刊>Electric power systems research >Comprehensive synchronous reference frame discrete-time modelling of a grid-connected PV for fast DC-side voltage control
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Comprehensive synchronous reference frame discrete-time modelling of a grid-connected PV for fast DC-side voltage control

机译：用于快速直流侧电压控制的并网光伏发电的综合同步参考系离散时间建模

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This paper presents a novel comprehensive discrete-time model of a three-phase single stage grid-connected photovoltaic generation system. The detailed model is carried out on synchronous reference frame. It is shown that both converter's AC and DC-side discrete time model differs from the continuous time one. The main differences are the AC-side current and voltage cross coupling, and the DC-side voltage non-minimum phase behaviour for small active power injected into the grid. Based on the new model, digital internal current and external DC-link voltage controllers are designed. Experimental results show that the proposed controllers provide fast transient response and disturbance rejection. Small errors obtained comparing experimental and simulation waveforms for both DC-side voltage and AC-side current corroborate to validate the model and the designed controllers. (C) 2017 Elsevier B.V. All rights reserved.
机译：本文提出了三相单阶段并网光伏发电系统的新型综合离散时间模型。详细模型在同步参考系上进行。结果表明，转换器的交流和直流侧离散时间模型都不同于连续时间模型。主要区别是交流侧电流和电压交叉耦合，以及向电网注入的有功功率很小的直流侧电压的最小相位行为。基于新模型，设计了数字内部电流和外部直流母线电压控制器。实验结果表明，所提出的控制器具有快速的瞬态响应和干扰抑制能力。比较直流侧电压和交流侧电流的实验和仿真波形时获得的小误差证实了模型和设计的控制器的有效性。 （C）2017 Elsevier B.V.保留所有权利。

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