TY - GEN
T1 - Continuous Model Predictive Control of Current-fed Half-Bridge Isolated DC/DC Converter
AU - Liang, Zehua
AU - Zhao, Dongdong
AU - Ma, Rui
AU - Li, Haiyan
AU - Huangfu, Yigeng
N1 - Publisher Copyright:
© 2020 IEEE.
PY - 2020/10/10
Y1 - 2020/10/10
N2 - This paper focuses on the control of the snubberless naturally-clamped soft-switching current-fed halfbridge isolated DC/DC converter. The average state-space model for the converter is established and linearized. Adopting the discrete-time linear predictive model, a continuous control set model predictive controller (CCS-MPC) with fixed switching frequency is firstly proposed for this converter control to improve the converter dynamic performance. Meanwhile, in order to solve the model-mismatch to achieve offset-free tracking, the extended-Kalman observer is designed to obtain the voltage error and the integrated error for dynamically compensating the current reference calculation as a feedforward compensator. Finally, the proposed control strategy is validated by the simulation of MATLAB/Simulink, and the proposed approach can stabilize the output voltage with good steady-state performance and strong robustness against the input voltage and load variations.
AB - This paper focuses on the control of the snubberless naturally-clamped soft-switching current-fed halfbridge isolated DC/DC converter. The average state-space model for the converter is established and linearized. Adopting the discrete-time linear predictive model, a continuous control set model predictive controller (CCS-MPC) with fixed switching frequency is firstly proposed for this converter control to improve the converter dynamic performance. Meanwhile, in order to solve the model-mismatch to achieve offset-free tracking, the extended-Kalman observer is designed to obtain the voltage error and the integrated error for dynamically compensating the current reference calculation as a feedforward compensator. Finally, the proposed control strategy is validated by the simulation of MATLAB/Simulink, and the proposed approach can stabilize the output voltage with good steady-state performance and strong robustness against the input voltage and load variations.
KW - current compensation
KW - current-fed isolated converter
KW - Extended-Kalman observer
KW - model predictive control (MPC)
KW - state-space average model
UR - http://www.scopus.com/inward/record.url?scp=85100963442&partnerID=8YFLogxK
U2 - 10.1109/IAS44978.2020.9334796
DO - 10.1109/IAS44978.2020.9334796
M3 - 会议稿件
AN - SCOPUS:85100963442
T3 - 2020 IEEE Industry Applications Society Annual Meeting, IAS 2020
BT - 2020 IEEE Industry Applications Society Annual Meeting, IAS 2020
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2020 IEEE Industry Applications Society Annual Meeting, IAS 2020
Y2 - 10 October 2020 through 16 October 2020
ER -