A Current Sharing State Estimation Method of Redundant Switched-Mode Power Supply Based on LSTM Neural Network

Peng He, Quan Zhou, Libing Bai, Songlin Xie, Weijing Zhang
2022 Applied Sciences  
Redundant Switched-mode Power supplies (SMPSs) are commonly used to improve electronic systems' reliability, and accurate estimation of the current sharing state is significant for evaluating the system's health. Currently, the current sharing state estimation is mainly realized by using current sensors to detect each branch's current, and the deployment and maintenance costs are high. In this paper, a method for power supply current sharing state estimation based on LSTM recurrent neural
more » ... k is proposed. By taking advantage of subtle differences in the inherent spectral characteristics of SMPSs, this method only needs to detect the voltage ripple at the switching frequency of the load terminal to estimate the output current of each power supply branch. The verification experiment on the three-power redundant experimental platform shows that the estimation error is less than 10%. The method has the characteristics of simple structure, non-invasion, convenient deployment and maintenance, so it has high application and promotion value.
doi:10.3390/app12073303 doaj:891b8a25e4e549b1adb7bd0c85cf9d50 fatcat:iqyft4kuf5fkphvj5ckrjyb2dy