Brushless exciters using a high temperature superconducting...

Electricity: single generator systems – Generator control – With excitation winding and/or circuit control

Reexamination Certificate

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C322S037000, C322S099000, C322S060000

Reexamination Certificate

active

07345457

ABSTRACT:
A brushless exciter for a synchronous generator or motor generally includes a stator and a rotor rotatably disposed within the stator. The rotor has a field winding and a voltage rectifying bridge circuit connected in parallel to the field winding. A plurality of firing circuits are connected the voltage rectifying bridge circuit. The firing circuit is configured to fire a signal at an angle of less than 90° or at an angle greater than 90°. The voltage rectifying bridge circuit rectifies the AC voltage to excite or de-excite the field winding.

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Elizabeth A. Bretz, “Super Conductors on the High Seas: New ship motors propel a quiet revolution”, IEEE Spectrum, Jan. 2004, pp. 52-59.

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