DEVICE FOR NON-CONTACT CONTROL OF ISOLATION OF EXCITATION CIRCUIT OF SYNCHRONOUS MACHINE Russian patent published in 2007 - IPC G01R31/34 

FIELD: power engineering, possible use in electric machines, operating in power systems.

SUBSTANCE: the device for non-contact control of isolation of excitation circuit of synchronous machine comprises brushless exciter with multi-phase armature winding and rotating diode rectifier, connected to excitation winding of synchronous machine, two-winding dynamic transformer, where between phase outputs of armature winding circuits are enabled composed of serially connected capacitor and stabilitron, and their points of connection through separating diodes are connected to contact of rotating primary winding of dynamic transformer, another contact of which is connected to array of rotor of synchronous machine, and immoveable secondary winding of dynamic transformer is connected to executive organ through a signal generator, which additionally receives voltage proportional to excitation current of exciter.

EFFECT: simplified structural realization of isolation control device, increased operational reliability and improved maintenance.

1 dwg