电源学报2024，Vol.22Issue(2)：90-97,8.DOI:10.13234/j.issn.2095-2805.2024.2.90
基于模型预测控制的Buck型双向DC-DC变换器动态补偿控制
Dynamic Compensation Control of Buck-type Bidirectional DC-DC Converter Based on Model Predictive Control
孟良 1胡雪凯1
作者信息
- 1. 国网河北省电力有限公司电力科学研究院,石家庄 050021
- 折叠
摘要
Abstract
Aimed at the problem of DC voltage fluctuations caused by load switching,power fluctuations and dou-ble-frequency injection in DC microgrids,a dynamic compensation control strategy for a Buck-type bidirectional DC-DC converter based on model predictive control(MPC)is proposed.First,the corresponding discrete state space matrix is es-tablished,and the input current is used as the disturbance.Second,the model-based inner-loop current predictive control and outer-loop voltage control of the Buck-type bidirectional DC-DC converter is designed.Third,a dynamic compensa-tion control structure based on a residual generator is designed for the current disturbance,and the dynamic compensa-tion controller Q(z)is solved.At the same time,the recursive least squares algorithm is used for parameter identification to reduce the influence of model uncertainty on the dynamic compensation control strategy.Finally,a comparative ex-periment was designed on the PSCAD/EMTDC simulation platform to verify the effectiveness of the proposed control strategy.Experimental results show that the compensation control structure can effectively solve the problem of DC bus voltage fluctuations and enhance the robustness of the entire system without changing the original predictive control.关键词
直流微电网/预测控制/残差生成器/动态补偿Key words
DC microgrid/predictive control/residual generator/dynamic compensation分类
信息技术与安全科学引用本文复制引用
孟良,胡雪凯..基于模型预测控制的Buck型双向DC-DC变换器动态补偿控制[J].电源学报,2024,22(2):90-97,8.
