Analysis of Voltage Oscillation in Hybrid Energy Storage System

This paper introduces a new energy storage method consists of "battery + pulse capacitor", which makes the instantaneous power amplified and reduces the power requirements for shipped launching device to power grid. When batteries charge the pulse capacitor, the voltage of the major circuit oscillates, the oscillation will impact the thyristor, analysis shows that the oscillation is caused by the improper parameters of the thyristor absorption branch. This paper puts forward a new designation method of parameters of the thyristor absorption branch based on hybrid energy storage. Optimization parameters are given out in this paper, which can simultaneously protect the thyristor and reduce the oscillation. At last, simulation is carried out to test the method.