Railway Air Conditioning Bus Isolation Transformer Loss Causes Of Inverter Failure Analysis And Structure Improvement

Along with our country railway passenger cars and continuous increase of design and manufacturing level,inverter is increasingly widely used.Inverter output directly influence on the performance of the whole car with electrical work,to guarantee the safe operation of the train,for passengers to provide a safe and comfortable driving environment plays an important role.Isolation transformer in inverter of occupy the important position,if isolation transformer failure will cause the malfunction of the inverter for the work of the whole car with electrical performance also has a great influence.In order to guarantee high reliability and good condition of vehicle inverter,this paper studied the reliability of inverter system,through the inverter system is introduced,the analysis of the fault state that inverter,analyzed the damage causes of the inverter fault isolation transformer.External inspections burning loss of isolation transformer and insulation resistance test,then disassemble analysis to check whether there is foreign body,and then determine the specific cause of the burning of the inverter.And as a way to expand isolation transformer faults of various types and research methods.Through this topic research,analysis of the isolation transformer loss causes of inverter failure,improve the structure of the isolation transformer,increase the safety of isolation transformer using,thus increasing the reliability of the inverter using.