Disturbance Rejection Control Method for Isolated Three-Port Converter with Virtual Damping

Energies

Mengyan Liao¹  Jiang You¹  Hailong Chen²  Mahinda Vilathgamuwa³  Negareh Ghasemi⁴ 

[1] College of Automation, Harbin Engineering University, Harbin 150001, China;College of Shipbuilding Engineering, Harbin Engineering University, Harbin 150001, China;School of Electrical Engineering and Computer Science, Queensland University of Technology, Brisbane 4000, Australia;School of Information Technology and Electrical Engineering, The University of Queensland, Brisbane 4072, Australia;

关键词: three-port converter;    linear active disturbance rejection control;    virtual damping;    linear extended state observer;   

DOI  :  10.3390/en11113204

来源: DOAJ

【 摘 要 】

The high-power density and capability of three-port converters (TPCs) in generating demanded power synchronously using flexible control strategy make them potential candidates for renewable energy applications to enhance efficiency and power density. The control performance of isolated TPCs can be degraded due to the coupling and interaction of power transmission among different ports, variations of model parameters caused by the changes of the operation point and resonant peak of LC circuit. To address these issues, a linear active disturbance rejection control (LADRC) system is developed in this paper for controlling the utilized TPC. A virtual damping based method is proposed to increase damping ratio of current control subsystem of TPC which is beneficial in further improving dynamic control performance. The simulation and experimental results show that compared to the traditional frequency control strategy, the control performance of isolated TPC can be improved by using the proposed method.

【 授权许可】

Unknown