论文标题
基于h-敌金的单相网格馈电压源逆变器的稳健控制器的设计
Design of H-infinity-based Robust Controller for Single-phase Grid-feeding Voltage Source Inverters
论文作者
论文摘要
本文提出了使用LCL滤波器的单相网格馈电压源逆变器的基于H-屈服的鲁棒电流控制器的设计。所提出的控制器的主要目的是具有良好的参考跟踪，干扰排斥和足够的LCL共振阻尼，在网格阻抗的范围范围很大。根据上述性能要求，设计了频率依赖的加权功能。随后，制定并解决了亚最佳控制问题，以确定稳定控制器。解决了控制器的计算足迹，以便在低成本控制器板上易于实现。最后，在验证阶段进行了OPAL-RT上的控制器硬件模拟，以获得控制器的性能保证。与基于比例和共振的电流控制器相比，所提出的控制器在瞬变过程中表现出快速的响应和较高的参考跟踪，稳态的干扰排斥。
This article proposes the design of H-infinity-based robust current controller for single-phase grid-feeding voltage source inverter with an LCL filter. The main objective of the proposed controller is to have good reference tracking, disturbance rejection and sufficient LCL resonance damping under a large range of variations of grid impedance. Based on the aforementioned performance requirements, frequency dependent weighting functions are designed. Subsequently, the sub-optimal control problem is formulated and solved to determine the stabilizing controller. Computational footprint of the controller is addressed for ease-of-implementability on low-cost controller boards. Finally controller hardware-in-the-loop simulations on OPAL-RT are performed in the validation stage to obtain performance guarantees of the controller. The proposed controller exhibits fast response during transients and superior reference tracking, disturbance rejection at steady-state when compared with proportional- and resonant-based current controllers.
