Robust $H_\infty$ Output Feedback Control of a Rotary Capacitive Power Transfer System

IEEE Access

Sing Kiong Nguang¹  Kai Lu¹  Shaoge Zang¹  Wei Sun² 

[1] Department of Electrical, Computer and Software Engineering, The University of Auckland, Auckland, New Zealand;School of Electrical Engineering and Automation, Hefei University of Technology, Hefei, China;

关键词: Robust H∞control;    dynamic system modelling;    capacitive power transfer;    class-E inverter;   

DOI  :  10.1109/ACCESS.2019.2935209

来源: DOAJ

【 摘 要 】

This paper investigates the design of a robust H_∞ output feedback controller for a capacitive power transfer (CPT) system. Firstly, a first harmonic model of the CPT system is derived based on first harmonic approximation (FHA). Secondly, by linearizing the first harmonic model at its operation point, a linearized state space model is obtained. Thirdly, variations of coupling capacitances and load in the CPT system are described as polytopic uncertainties in the linearized state space model. Then, we propose a novel robust H_∞ output feedback controller design technique for the linearized state space model with polytopic uncertainties. Finally, both simulation and experiment are carried out to verify the effectiveness of the proposed controller design.

【 授权许可】

Unknown