This paper presents a new direct active and reactive power control for DC–AC converters connected to three-phase network through a filter and lossless/lossy line. The control is based on adaptive input–output feedback linearization control (AIOFLC). The controller computes the reference voltages of the inverter to bring active and reactive power errors to zero without any inner current loop. With a suitable Lyapunov function, the control law and the estimation laws for inductance and resistance of filter and line are obtained in synchronous reference frame. The proposed controller has a simple structure which needs less computation and increases accuracy. Using space vector pulse width modulation (SVM), a fixed switching frequency is achieved which simplifies harmonic design of AC filter and more utilizes DC voltage source. The parameters of filter and line are uncertain or unknown; only their nominal values are available. Simulation results show the capability and effectiveness of the proposed AIOFLC in direct active and reactive power control in several case studies considering various unknown filter/line parameters.

中文翻译：

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使用自适应输入-输出反馈线性化对基于并网逆变器的 DG 进行解耦有功和无功功率控制

本文介绍了一种新的直接有功和无功功率控制，用于通过滤波器和无损/有损线路连接到三相网络的 DC-AC 转换器。该控制基于自适应输入-输出反馈线性化控制 (AIOFLC)。控制器计算逆变器的参考电压，在没有任何内部电流环路的情况下将有功和无功功率误差归零。利用合适的李雅普诺夫函数，在同步参考系中得到滤波器和线路的电感和电阻的控制律和估计律。所提出的控制器结构简单，需要较少的计算并提高精度。使用空间矢量脉宽调制 (SVM)，可实现固定开关频率，从而简化交流滤波器的谐波设计，并更多地利用直流电压源。滤波器和线路参数不确定或未知；只有它们的标称值可用。在考虑各种未知滤波器/线路参数的几个案例研究中，仿真结果显示了所提出的 AIOFLC 在直接有功和无功功率控制中的能力和有效性。