中国电机工程学报2018，Vol.38Issue(9)：2717-2727,11.DOI:10.13334/j.0258-8013.pcsee.162332
电压型控制SIDO CCM Buck变换器的统一离散迭代映射模型及稳定性研究
Unified Discrete Iterative Map Model and Stability Research of Voltage-mode Controlled Single-inductor Dual-output CCM Buck Converter
摘要
Abstract
The stability issue of voltage-mode controlled single-inductor dual-output (SIDO) Buck converter in continue conduction mode (CCM) was studied. Two switching paths were revealed with the analysis of the operating principle of voltage-mode P controlled and PI controlled SIDO CCM Buck converter, and the discrete iterative map model of the converter was established based on the state equations and switching functions. Then, with the bifurcation diagram and eigenvalues of the Jacobian matrix, the stability of the converter was analyzed with respect to the various proportional parameters and integral parameters of error amplifiers of the two voltage control loops respectively. The research results show that the Hopf bifurcation and low frequency oscillation would occur with respect to proportional parameters of error amplifiers of sub-switching control loop decreasing or that of main-switching control loop increasing which was different from the traditional voltage-mode controlled Buck converter. The increased integral parameters would decrease the stability region of the proportional parameters. Finally, the results of simulation and experiment of voltage-mode controlled SIDO CCM Buck converter verified the theoretical analysis.关键词
单电感双输出/统一离散迭代映射模型/特征值/分岔/稳定性Key words
single-inductor dual-output (SIDO)/unified discrete iterative map model/eigenvalues/bifurcation/stability分类
信息技术与安全科学引用本文复制引用
王瑶,许建平,周国华..电压型控制SIDO CCM Buck变换器的统一离散迭代映射模型及稳定性研究[J].中国电机工程学报,2018,38(9):2717-2727,11.基金项目
国家自然科学基金项目(61771405) （61771405）
电力电子节能技术与装备重点实验室开放课题(szjj2017-064).Project Supported by the National Natural Science Foundation of China (61771405), and Sichuan Province Key Laboratory of Power Electronics Energy-saving Technologies & Equipment under grant (szjj2017-064). （szjj2017-064）
