T型三电平400 Hz三相APF预测无差拍重复控制  

Predictive deadbeat repetitive control based on T-type three-level 400 Hz three-phase active power filter

作　　者：李样 冯润波 尹涛[1] 王莉[1] 舒泽亮[1] LI Yang;FENG Runbo;YIN Tao;WANG Li;SHU Zeliang(School of Electric and Engineering,Southwest Jiaotong University,Chengdu 610000,China)

机构地区：[1]西南交通大学电气与工程学院,四川成都610000

出　　处：《电机与控制学报》2023年第4期34-42,共9页Electric Machines and Control

基　　金：国家重点研发计划(2021YFB2601500);国家自然科学基金(52077183)。

摘　　要：针对在400 Hz航空电源系统中,为了提高电能质量而采用有源电力滤波技术,但因系统基频高且存在延时而出现的补偿效果不佳的问题,结合延时对补偿效果的影响分析,提出一种预测无差拍重复控制策略。首先,为提高系统在动态情况下的反应速度引入预测电流控制,在加快动态响应的同时减小系统稳态误差。其次,为解决电流控制及采样的各一拍延时问题,对参考补偿电流进行“两拍预测”。此外,为消除补偿电流的周期性控制误差,在电流控制环内嵌入重复控制。稳态和动态仿真中,该综合控制策略表现出比传统控制更优的补偿效果和动态性能。为了进一步验证该策略的有效性,实验在T型三电平400 Hz三相APF平台上进行。实验结果表明,该控制策略可以将400 Hz系统中网侧电流THD从10.5%降低到3.13%。In order to improve the power quality of the 400 Hz aviation power supply system,active power filter(APF)is adopted,but the compensation effect is poor due to the high fundamental frequency and delay of the system.Based on the analysis of the impact of delay on the compensation effect,a predictive deadbeat repetitive control strategy is proposed.Firstly,predictive current control was introduced to improve the response speed of the system under dynamic conditions,which accelerated the dynamic response while reducing the steady-state error of the system.Secondly,to solve the problem of one beat delay in current control and sampling,a“two-beat prediction”was performed on the reference compensation current.In addition,to eliminate the periodic control error of compensating current,repetitive control was embedded in the current control loop.In both steady-state and dynamic simulations,this comprehensive control strategy exhibits superior compensation effects and dynamic performance compared to traditional control.To further validate the effectiveness of this strategy,experiments were conducted on a T-type three-level 400 Hz three-phase APF platform.The experimental results show that this control strategy can reduce the THD of the grid side current in the 400 Hz system from 10.5%to 3.13%.

关 键 词：谐波分析 T型三电平变换器 有源电力滤波器 预测电流控制 无差拍控制 重复控制 

分 类 号：TM713.8[电气工程—电力系统及自动化]