No bypass contactor's straight oil flow pump soft start device

The utility model relates to a no bypass contactor's straight oil flow pump soft start device guarantees that straight oil flow pump startup process is steady, does not have the impact to direct current system and motor. This starting drive of its characterized in that will straighten the oil flow pump and not have the start -up of impact and stop through high -power electric power power semiconductor device IGBT and the high -frequency chopper technique of stepping down, after starting, through IGBT's direct completion start -up course, cancel traditional direct contactor of using, reduce thehigh contactor of fault rate, reduce maintenance volume and fault rate, increase the stability and the reliability of system. 本实用新型涉及了种无旁路接触器的直流油泵软启动装置，保证直流油泵启动过程平稳，对直流系统和电机无冲击。其特征在于该启动装置通过大功率电力电力半导体器件IGBT和高频斩波降压技术，将直流油泵无冲击启动和停止，在启动结束后，通过IGBT的直通完成启动过程，取消了传统的直通用接触器，减少了故障率高的接触器，降低了维护量和故障率，增加了系统的稳定性和可靠性。