论文标题
基于MU合成的广义稳健框架，用于网格构成和网格形成逆变器
mu-synthesis-based Generalized Robust Framework for Grid-following and Grid-forming Inverters
论文作者
论文摘要
网格跟随和网格形成的逆变器是微电网的积分成分，用于将可再生能源与网格的整合。对于需要模拟可控电流来源的逆变器的网格追随者，一个重大挑战是解决网格阻抗的巨大不确定性。对于需要模拟可控电压源的网格形成逆变器，必须解决由于负载不同而引起的较大不确定性。在本文中，基于MU合成的鲁棒控制设计方法，即保证了在量化的不确定性下的性能，它是在统一的方法下开发的，用于统一方法，用于网格遵循和格式形成逆变器。在设计拟议的最佳控制器的同时，控制目标是：i）参考跟踪，干扰拒绝，谐波补偿能力，具有足够的LCL共振阻尼，在较大的网格阻抗不确定性变化下，网格稳定逆变器； ii）参考跟踪，干扰排斥，谐波补偿能力，在对电网形成逆变器的等效载荷不确定性变化下具有增强的动态响应。为了评估所提出的控制器的合并系统中的系统中的系统（SIL），基于两个物理逆变器系统的10 kVa微电网系统的基于10 kVa微电网系统的基于循环的强制硬件（PHIL）的实验验证，以评估所提出的控制器的功效和可行性。
Grid-following and grid-forming inverters are integral components of microgrids and for integration of renewable energy sources with the grid. For grid following inverters, which need to emulate controllable current sources, a significant challenge is to address the large uncertainty of the grid impedance. For grid forming inverters, which need to emulate a controllable voltage source, large uncertainty due to varying loads has to be addressed. In this article, a mu-synthesis-based robust control design methodology, where performance under quantified uncertainty is guaranteed, is developed under a unified approach for both grid-following and grid-forming inverters. The control objectives, while designing the proposed optimal controllers, are: i) reference tracking, disturbance rejection, harmonic compensation capability with sufficient LCL resonance damping under large variations of grid impedance uncertainty for grid-following inverters; ii) reference tracking, disturbance rejection, harmonic compensation capability with enhanced dynamic response under large variations of equivalent loading uncertainty for grid-forming inverters. A combined system-in-the-loop (SIL), controller hardware-in-the-loop (CHIL) and power hardware-in-the-loop (PHIL) based experimental validation on 10 kVA microgrid system with two physical inverter systems is conducted in order to evaluate the efficacy and viability of the proposed controllers.
