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首页> 外文期刊>IEEE Transactions on Industrial Electronics >Model Predictive Decoupled Active and Reactive Power Control for High-Power Grid-Connected Four-Level Diode-Clamped Inverters
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Model Predictive Decoupled Active and Reactive Power Control for High-Power Grid-Connected Four-Level Diode-Clamped Inverters

机译：大功率并网四电平二极管钳位逆变器的模型预测去耦有功和无功功率控制

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摘要

In this paper, a model predictive scheme is proposed to control the grid-connected high-power four-level diode-clamped inverter. To predict the future behavior of active and reactive grid power values and dc link capacitor voltages, a discrete-time model of the inverter is developed in synchronous reference frame. The controller uses all the possible switching states of the inverter for the prediction and evaluates them using a cost function. The switching state, which minimizes the cost function, is then chosen and applied at the next sampling interval. The switching frequency minimization is also achieved by including an extra constraint in the cost function. A simplified extrapolation method with reduced computational burden is proposed to safeguard the semiconductor devices during the dynamic changes in reference power values. The performance of the proposed method is investigated with the perturbations in the grid filter and dc link parameters. The feasibility of the proposed method is verified through simulation and experimental results, showing good dynamic and steady-state performance.
机译：本文提出了一种模型预测方案来控制并网的大功率四电平二极管钳位逆变器。为了预测有功和无功电网功率值以及直流链路电容器电压的未来行为，在同步参考系中建立了逆变器的离散时间模型。控制器将逆变器的所有可能开关状态用于预测，并使用成本函数对其进行评估。然后选择最小化成本函数的开关状态，并在下一个采样间隔应用。通过在成本函数中包含额外的约束，也可以实现开关频率的最小化。提出了一种简化的外推方法，减少了计算负担，以在参考功率值动态变化期间保护半导体器件。利用网格滤波器中的扰动和直流链路参数研究了该方法的性能。仿真和实验结果验证了该方法的可行性，具有良好的动态和稳态性能。

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