In this article, a nonlinear controller for a grid-tied voltage-source converter (VSC) supplying a constant power load is introduced. The control law combines a feedback loop and a feedforward compensator. The feedback loop strategy uses a feedback linearizing method for compensating nonlinearities appearing in the VSC model. The performance in the presence of changes between two different values of constant power is improved by including a fast feedforward compensation. This compensator uses estimates of power load and its time derivative obtained from a nonlinear observer. The resultant strategy is validated via simulation and experimental tests. These experiments show that the proposed scheme performs in a very good way.

中文翻译：

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提供恒定功率负载的并网 VSC 的瞬时复杂功率控制


在本文中，介绍了一种用于提供恒定功率负载的并网电压源转换器（VSC）的非线性控制器。控制律结合了反馈环路和前馈补偿器。反馈环路策略使用反馈线性化方法来补偿 VSC 模型中出现的非线性。通过包含快速前馈补偿，可以提高两个不同恒定功率值之间存在变化时的性能。该补偿器使用从非线性观测器获得的电力负载及其时间导数的估计。通过模拟和实验测试验证了所得策略。这些实验表明所提出的方案表现得非常好。