重庆理工大学学报2025，Vol.39Issue(5)：206-215,10.DOI:10.3969/j.issn.1674-8425(z).2025.03.026
含负载前馈补偿的四开关Buck-Boost多模式广义预测控制策略
Four-switch Buck-Boost multi-mode generalized predictive control strategy with load feedforward compensation
摘要
Abstract
The four-switch Buck-Boost converter with multi-mode operation is suitable for a wide input voltage range.To address the uneven switching between modes of the four-switch Buck-Boost converter and excessive output voltage fluctuations when the load abruptly changes,we propose a generalized predictive control strategy with load feedforward compensation.First,based on the switching network average model method,a unified mathematical model of multi-mode converter is built.Then,the generalized predictive control is employed to obtain a multi-mode unified prediction model of transformer.Next,the load feedforward compensation based on the prediction model is introduced to reduce the impact of load mutation on the output voltage.Meanwhile,by analyzing the influence of the duty cycle of the intermediate mode on the proportion of direct power transmission and the current ripple of the inductor,the interval of the converter in different working modes is defined.Finally,an experimental prototype based on gallium nitride is set up in the laboratory for experimental verification.Our results show the output voltage of the system does not fluctuate significantly when the load bursts.The output voltage fluctuation is effectively suppressed within 0.5 V and the adjustment time within 2.3 ms when the system mode is switched.关键词
四开关Buck-Boost/多模式控制/广义预测控制/负载前馈补偿Key words
four-switch Buck-Boost/multi-mode control/generalized predictive control/load feedforward compensation分类
信息技术与安全科学引用本文复制引用
郭强,张帆云,贾勇,唐博..含负载前馈补偿的四开关Buck-Boost多模式广义预测控制策略[J].重庆理工大学学报,2025,39(5):206-215,10.基金项目
重庆市教委科学技术研究项目(KJQN202101118) （KJQN202101118）
重庆理工大学研究生教育高质量发展项目(gzlkc202301) （gzlkc202301）
