高电压技术2024，Vol.50Issue(3)：1090-1099,10.DOI:10.13336/j.1003-6520.hve.20230793
基于无差拍预测算法的双向隔离型AC-DC矩阵变换器高动态电流控制策略
High Dynamic Current Control Strategy for Bidirectional Isolated AC-DC Matrix Converter Based on Deadbeat Predictive Algorithm
摘要
Abstract
In the conventional double-closed-loop control strategy for the bidirectional isolated AC-DC matrix converter,many control parameters are overmany and it is difficult to be tuned.In order to solve these problems,a high dynamic current control strategy based on deadbeat predictive algorithm is proposed in this paper.In the proposed strategy,a deadbeat predictive algorithm is introduced for the grid currents control,by which the controller parameters are reduced and digital control delay is eliminated.A large number of voltage and current detection in the algorithm are taken into ac-count,and the input voltage observer is used to reduce the detection cost and the impact of sampling errors.The transducer uses a single phase shift method to coordinate with the deadbeat predictive algorithm.The reference input cur-rent and the phase shift angle are bijective functions,and the method is simple and easy to implement.Simulation and experimental results show that the proposed control strategy can achieve the sinusoidal grid currents and a unity power factor.The DC voltage is stable with a current ripple rate of less than 1%.Fast-tracking is realized with no overshoot and no oscillation when the DC current changes abruptly at the reference value.Meanwhile,the proposed control strategy re-duces the current dynamic adjustment time by 69%,85%and 67%,respectively,compared with the conventional double-closed-loop control strategy during the forward and reverse power transfer and forward and reverse switching of the converter.It can be verified that the proposed control strategy can ensure good input and output performance of the converter and significantly improve the dynamic performance in the switching process compared with the conventional double-closed-loop control strategy.关键词
矩阵变换器/预测控制/控制器参数/无差拍预测算法/功率因数/动态性能Key words
matrix converter/predictive control/control parameters/deadbeat predictive algorithm/power factor/dy-namic performance引用本文复制引用
梅杨,张家奇..基于无差拍预测算法的双向隔离型AC-DC矩阵变换器高动态电流控制策略[J].高电压技术,2024,50(3):1090-1099,10.基金项目
北京市自然科学基金(3222051 （）
JL23001). Project supported by Beijing Natural Science Foundation(3222051,JL23001). （3222051,JL23001）
