舰船推进变频器过电压抑制技术研究

Over-voltage Suppressing of the Ship's Propulsion Converter

推进变频器是电力推进舰船的动力关键设备,其运行可靠性关系着船舶运行的安全性。过电压是导致推进变频器损坏的重要原因之一,本文根据推进变频器的拓扑结构分析了其过电压产生的机理,提出了基于压敏电阻的过电压抑制方法,分析了压敏电阻的接入位置,对其抑制效果进行仿真分析,仿真结果验证了抑制方法的有效性。

Propulsion coverter is an important power equipment in the ship with electrical propulsion, whose operation reliability determines the security of the ships. Over-voltage is an important reaseon causing the converter damage. The mechanism of over-voltage generation is analyzed according to the topology of propelling converter, and a method to suppress over-voltage based on varistor is proposed. The location of the varistor is analyzed, and the over voltage suppressing effection are simulated. The simulation results validate the proposed method.