Fault Diagnosis of Capacitance Aging in DC Link Capacitors of Voltage Source Inverters Using Evidence Reasoning Rule

Table 1

Basic parameters of the marine power system.

Item	Device	Type	Main parameters
1	Diesel engine	Yuchai Group YC6K560L-C20	6-cylinder, in-line, four-stroke, turbo-charged, displacement 12.939 l
2	Generator	Leroy-Somer FLSMV355LB	Marine brushless three-phase AC asynchronous motor, rated power 380 kW, rated voltage 440 V, rated frequency 60 Hz
3	Rectifier	Vacon NXI_0730	Input voltage 440 V AC, output voltage 750 V DC
4	Inverter	Vacon NXI_0650	Input voltage 750 V DC, output voltage 400 V AC
5	Propulsion motor	CSIEM TYT350-8-AT	Rated voltage 400 V, rated power 350 kW, air-cooled, variable frequency motor