ELECTRICAL MACHINE ASSEMBLY Russian patent published in 1998 - IPC

FIELD: electric power production. SUBSTANCE: device has electrical machine, non-brush field exciter with diode rectifier, two dynamic double-winding transformers, which primary windings are located on rotor and secondary windings on stator. One end of primary winding of second transformer is connected to rotor housing; another end is connected to common point of conductor which is connected between capacitor and cathode of semiconductor diode, which other terminals are connected to direct current terminals of diode rectifier. Semiconductor diode is connected to cathode group of rectifier; capacitor is connected to anode group. Secondary windings of transformers are connected to actuating member through generator of signal which is proportional to resistance of insulation in excitation winding circuit. EFFECT: increased sensitivity of monitoring of rotor insulation, increased reliability of electrical machine. 1 dwg