When the equipment in new energy vehicles converts electrical energy,due to the rapid switching of switching devices,high-frequency voltage and current fluctuations will be generated,which will be transformed into transient overvoltage,which has a high peak,which makes it difficult to respond quickly and suppress overvoltage energy.To this end,the transient overvoltage suppression technology of the electrical system of new energy vehicles is proposed.This paper analyzes the phenomenon of transient overvoltage caused by the electrical system of new energy vehicles,introduces thyristors,calculates the DC voltage of the DC side of the thyristor rectifier,considers the power transfer between the automobile battery and the electrical system,substitutes the DC voltage into the absolute value function,and introduces the particle swarm optimization algorithm to suppress the transient overvoltage of the electrical system of new energy vehicles.The simulation results show that the maximum value of the transient overvoltage drops to below 38kV after the method is suppressed,and the electrical system also reaches a stable equilibrium state.
关键词
新能源汽车/电气系统/瞬变电压/电压抑制
Key words
New Energy Vehicles/Electrical Systems/Transient Voltages/Voltage Suppression
维普
万方数据