基于Park变换的单相逆变器静态前馈补偿控制策略  

Park Transform-Based Static Feed-Forward Compensation Control Strategy for Single-Phase Inverter

作　　者：赵月 崔远慧[1] 王延平[1] ZHAO Yue;CUI Yuan-hui;WANG Yan-ping(School of Information Science and Engineering,Dalian Polytechnic University,Dalian 11 6000,China)

机构地区：[1]大连工业大学信息科学与工程学院,辽宁大连116000

出　　处：《电工电气》2018年第9期12-15,29,共5页Electrotechnics Electric

基　　金：大连市科技局重点项目(2015A11GX009)

摘　　要：针对单相光伏逆变器在双闭环控制系统中电流环采用典型Ⅰ型系统时存在抗干扰性能差的缺点,提出了一种新的电流内环静态前馈补偿控制策略。通过改进的Park变换,获得单相逆变器的等效模型,在等效逆变器模型中利用前馈解耦控制的方法得到电流的控制方程,在典型Ⅰ型电流内环控制系统中加入具有静态前馈补偿控制环节的方法抑制电流内环的干扰信号。通过SIMULINK仿真可以得出,具有静态前馈控制的电流内环控制器对比采用典型Ⅰ型系统控制器的静态性能和动态性能均良好,有效提高了电流环的抗干扰性能。Aiming at the existing disadvantages of inferior anti-interference ability when the current loop of single-phase photovoltaic inverter adopts the typical I-type system in double closed-loop control system,this paper proposed a kind of new static feed-forward compensation control strategy for current loop.Through the improved Park transformation,the equivalent model of the single-phase inverter was obtained.In the equivalent inverter model the feed-forward decoupling control method was used to get the control equation of the currents.For the interference signal in the current control equation,the static feed-forward compensation control method was used to eliminate the interference signal present in the inner loop of the current.The SIMULINK simulation shows that for the current loop with the static feedforward control,the static property of typical I-type system controller was the same as that of dynamic property,which effectively improves the anti-interference ability of the current loop.

关 键 词：太阳能光伏逆变器 PARK变换 静态前馈补偿 逆变器前馈解耦控制 

分 类 号：TM464[电气工程—电器]