电流控制交错Boost变换器精确建模与设计  

Precise Modeling and Design of Current Controlled Interleaved Boost Converter

作　　者：阎昌国 龚仁喜[2] 安玉 李青 刘小雍 YAN Changguo;GONG Renxi;AN Yu;LI Qing;LIU Xiaoyong(School of Engineering,Zunyi Normal College,Zunyi 563006,Guizhou,China;College of Electrical Engineering,Guangxi University,Nanning 530004,Guangxi,China)

机构地区：[1]遵义师范学院工学院,贵州遵义563006 [2]广西大学电气工程学院,广西南宁530004

出　　处：《电气传动》2021年第24期22-26,共5页Electric Drive

基　　金：国家自然科学基金资助项目(61561007);遵义市科技局基金资助项目(遵市科合HZ字[2020]22号);贵州省教育厅基金资助项目(黔教合KY字[2016]254号)。

摘　　要：交错Boost变换器是中大功率开关电源前级功率因数校正装置的核心电路,其建模的准确度对开关电源的设计至关重要。为了缩小模型与实际电路间的偏差,更好地服务工程设计与应用,提出了一种峰值电流控制的非理想交错Boost变换器设计方案。在连续导电模式工况下,建立了系统功率级与控制级精确的小信号模型,获得了系统完整的交流小信号模型。基于该模型,分析了非理想因素对系统特性的影响,设计了电压控制器补偿网络,理论分析表明该模型较之传统理想模型更为精确,实验结果证实该方案能准确实现交错控制,具有动态响应快、输出电压波动小等优点。The interleaved Boost converter is the core circuit of the pre-stage power factor correction device for medium and high power switching power supplies.The accuracy of its modeling is crucial to the design of switching power supplies.In order to reduce the deviation between the model and the actual circuit,and to better serve the engineering design and application,a non-ideal interleaved Boost converter design scheme for peak current control was proposed.Under the condition of continuous conduction mode,an accurate small signal model of the system power level and control level was established,and a complete alternating current small signal model of the system was obtained.Based on the model,the influence of non-ideal factors on the system characteristics was analyzed,and the voltage controller compensation network was designed.Theoretical analysis shows that the model is more accurate than the traditional ideal model.The experimental results confirm that the scheme can accurately achieve interleaved control.The proposed model has the advantages of fast dynamic response and small output voltage fluctuation.

关 键 词：交错Boost变换器 峰值电流控制 非理想 连续导电模式 小信号模型 

分 类 号：TM461[电气工程—电器]