Calculation Method and Experimental Study of the Oil Film Capacitance of Motor Insulated Bearings
At present,most AC drive motors use outer ring insulated bearings,whose capacitance is divided into coated capacitance and oil film capacitance.The coating ca-pacitance mainly depends on the insulation material and the thickness of the insulation layer,however,the oil film capac-itance is related to the operating conditions of the motor and the thickness of the oil film.The calculation method of oil film capacitance is proposed based on the numerical calculation,and verification tests are performed on the bearing galvanic corrosion test device.The results show that the theoretical val-ue of oil film capacitance is basically consistent with the test value,and the calculation method is reasonable and feasible.
motorinsulated bearingcoating capaci-tanceoil film capacitance
NETL
NSTL
万方数据
维普
