中国电机工程学报2017，Vol.37Issue(20)：6068-6076,9.DOI:10.13334/j.0258-8013.pcsee.161895
双发射线圈感应电能传输系统的小信号建模及控制研究
Study on Small Signal Modeling and Controlling for Dual Transmitters Based Inductive Power Transfer System
麦瑞坤 1林天仁 1李勇 1何正友1
作者信息
- 1. 西南交通大学电气工程学院,四川省成都市610031
- 折叠
摘要
Abstract
The inductive power transfer (IPT) system with dual transmitters is a good approach to achieve effective output power allocation of two inverters and enhance power supply capacity.This paper analyzed the dynamics of a dual transmitters based IPT system in the condition of output power ratio 1:1,and aimed to improve its tracking performance using a digital PI controller designed by the small signal model.An adequate phase angle stability margin of closed-loop small signal model then could be achieved.Firstly,the large signal model of the IPT system,the steady-state operating point were derived using generalized state-space averaging (GSSA) technique.Based on the previous work,the small signal model was established to describe how the load voltage reacts to a perturbation in its input.Then,the Matlab's PIDtool design toolbox was adopted to generate suitable theoretical PI controller gains for a fast response time in the load voltage.Meanwhile,the phase angle stability margin of closed-loop small signal model was verified accordingly.Finally,comparing the step response of the small signal model with the Simulink model and the experimental one respectively,the small signal model was proved to be closely matched to the experimental system's dynamics.The closed-loop digital PI controller ensured a fast response time of approximately 13ms in the load voltage,which was consistent with the theoretical design and validated the accuracy of the modeling.关键词
双发射线圈/感应电能传输/广义状态空间平均/小信号模型/数字PI控制器Key words
dual transmitters/inductive power transfer (IPT)/generalized state-space averaging/small signal model/digital PI controller分类
信息技术与安全科学引用本文复制引用
麦瑞坤,林天仁,李勇,何正友..双发射线圈感应电能传输系统的小信号建模及控制研究[J].中国电机工程学报,2017,37(20):6068-6076,9.
