增强LVRT能力的逆变器多电能质量优化预测控制  

MULTI POWER QUALITY OPTIMIZATION PREDICTIVE CONTROL OF INVERTER FOR ENHANCED LVRT CAPABILITY

作　　者：汪海宁[1] 冯博文 耿将 谢缔 汪亮亮 张鹏[1] Wang Haining;Feng Bowen;Geng Jiang;Xie Di;Wang Liangliang;Zhang Peng(Engineering Research Center of Ministry of Education for Photovoltaic System,Hefei University of Technology,Hefei 230009,China;Guangdong Hengyi Energy Technology Co.,Ltd.,Dongguan 523878,China)

机构地区：[1]合肥工业大学光伏系统教育部工程研究中心,合肥230009 [2]广东恒翼能科技股份有限公司,东莞523878

出　　处：《太阳能学报》2025年第4期91-102,共12页Acta Energiae Solaris Sinica

基　　金：高等学校学科创新引智计划(BP0719039)。

摘　　要：提出一种适应三电平逆变器低电压穿越(LVRT)的多目标模型预测电流控制策略,无需电流正负序分离和滤波电网电压前馈,在跌落过程中不会出现过电流;给出αβ轴下功率/电流质量优化的指令电流计算通式,通过调整修正系数矩阵,实现功率波动、负序电流和谐波电流之间的协调控制,提高逆变器在LVRT过程中的动态响应及多电能质量优化能力。仿真和实验验证所提方法动态响应的优越性。A multi-objective model predictive current control strategy tailored for enhancing low voltage ride through(LVRT)performance with three-level inverters is introduced.This strategy eliminates the necessity for current polarity discrimination and grid voltage feedforward filtering,thereby guaranteeing the absence of overcurrent during voltage drops.Furthermore,it provides a universal formulation for calculating commanded currents in theαβaxis,aimed at optimizing both power and current quality.By adjusting the correction coefficient matrix,coordinated control among power fluctuation,negative sequence current,and harmonic currents is possible.It enhances the dynamic response and multi-power quality optimization capability of inverters during LVRT processes.The superior dynamic performance of the proposed method is verified through both simulation studies and experiments.

关 键 词：三电平 逆变器 模型预测控制 电能质量 电压跌落 低电压穿越 

分 类 号：TM464[电气工程—电器]