逆变器离散谐振主导极点消除控制器设计  

Design of Discrete Resonance Dominant Pole Elimination Controller for Inverters

作　　者：李大乐 全相军[1] 王建华[1] 高丙团[1] LI Da-le;QUAN Xiang-jun;WANG Jian-hua;GAO Bing-tuan(School of Electrical Engineering,Southeast University,Nanjing 210096,China)

机构地区：[1]东南大学,电气工程学院,江苏南京210096

出　　处：《电力电子技术》2025年第3期24-26,30,共4页Power Electronics

基　　金：国家重点研发计划(2021YFB2400502);国家自然科学基金(52007034)。

摘　　要：状态空间控制可以为LC型电压源变流器提供较高的动态性能和稳定裕度,然而,由数字控制系统引起的固有数字延迟会降低系统的性能,甚至引起不稳定。为此,本文提出了一种基于离散状态空间模型的谐振控制器,同时,考虑数字时延,在离散域解析地设计了状态反馈和前馈控制,通过零极点对消原理消除系统的主导动态,实现系统的近似零动态特性。实验结果验证了所提控制器与设计方法的正确性与有效性。State-space control could provide both high dynamicperformance and sufficient stability margin to voltage source converters with LCfilter.However,an inherent digital delay induced by a digital control system degrades the system performance and even induces instability.Therefore,a resonant controller based on a discrete-time state space model is proposed.At the same time,considering the digital delay,state feedback and feedforward control are analyti-cally designed in the discrete domain,and the dominant dynamics of the system are eliminated through the zero-pole cancellation principle to approximately achieve zero dynamic characteristics of the system.The experimental results have verified the correctness and effectiveness of the proposed controller and design method.

关 键 词：逆变器 谐振控制器 极点消除 

分 类 号：TM464[电气工程—电器]