摘要
单电感双输出(SIDO)Buck变换器两条支路输出端存在交叉影响,这降低了变换器的暂态性能。针对这一问题,将共模电压-差模电压(CMV-DMV)控制应用于变换器,并将CMV-DMV控制与独立模式电压(INDMV)控制进行对比分析。从时域角度分析了两种控制策略抑制交叉影响的特点,同时利用灵敏度理论对两种控制策略的稳定性进行了分析。研究发现,相比于INDMV控制,CMV-DMV控制在受到系统扰动时具有更快的暂态响应速度,有利于抑制交叉影响;通过分析电路参数变化对系统特征根的影响,发现储能元件的选取影响到系统的交叉影响及稳定性。实验结果验证了理论分析的正确性。
The output terminals of the two branches of the single-inductance dual-output(SIDO) Buck converter have cross-regulation which reduces the transient performance of the converter.In response to this problem,the commonmode voltage differential-mode voltage(CMV-DMV) control is applied to the converter and the CMV-DMV control is compared with the independent mode voltage(INDMV) control.From the perspective of time domain,the characteristics of the two controlled strategies to suppress the cross-regulation are analyzed and the stability of the two controlled strategies is analyzed by using the sensitivity theory.Through the comparison,it is found that,compared with INDMV control,CMV-DMV control has a faster transient response speed when subjected to system disturbances which is beneficial to suppress cross-regulation.By analyzing the influence of circuit parameter changes on the characteristic root of the system,it is found that the selection of energy storage components can affect the cross-regulation and stability of the system.The correctness of the theoretical analysis is verified by the experimental results.
作者
李慧慧
皇金锋
谢锋
李文杰
LI Hui-hui;HUANG Jin-feng;XIE Feng;LI Wen-jie(ShaanxiUniversityof Technology,Hanzhong723001,China)
出处
《电力电子技术》
CSCD
北大核心
2022年第6期107-110,共4页
Power Electronics
基金
陕西省教育厅项目(21JK0567)。
关键词
变换器
电压控制
交叉影响
converter
voltage control
cross-regulation
