Optimized Phase-Shift Control Method Based on Load Current Feedforward for Bidirectional Full Bridge DC-DC Converters

Author(s):  
Jiawei Zhang
2021 ◽  
Vol 248 ◽  
pp. 02064
Author(s):  
Chang Li ◽  
Xujing Tang ◽  
Zhongze Zhang ◽  
Yupeng Yuan

This paper takes the application of bidirectional DC-DC converter in Marine hybrid power system as the background, the problems of high reflow power and current stress in dual active bridge converter under traditional phase shift control are studied in this paper. Based on the dual phase shift control strategy, the power transmission optimization algorithm model is analyzed and derived, and a control method for optimizing mode switching is proposed. The optimized control algorithm is validated by Matlab/Simulink simulation experiment. The results show that the reflow power and current stress optimization control algorithm can effectively reduce the reflow power and the current stress of the converter, so as to improve the operation performance of DAB converter in high-power ship hybrid power system.


2017 ◽  
Vol 201 (3) ◽  
pp. 43-52
Author(s):  
SHOHEI KOMEDA ◽  
HIDEAKI FUJITA

Author(s):  
Syed Simran.K, Md.Anwar, Dr.Sharan Reddy and Santosh.B.M

A high frequency DC-DC converter operating in the MHz range is proposed, which can achieve unbiased load current even while maintaining high performance over a wide range of load voltages. Due to these functions, the provided transformer is suitable for LED driver applications, which require different types of LEDs to operate with controlled current. The proposed transformer satisfies the uncontrolled load current using the LCL-T resonance community and achieves high efficiency using a predetermined switching frequency. The LCL-T resonance transformer also works effectively in controlling its output to the required rating using phase shift control. The overall performance of the LCL-T Echo transducer was evaluated and compared with the LC3L controlled echo transducer. Simulation work is done using the MATLAB / Simulink program.


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