System and Method For Generator Main Field Energy Extraction

摘要

A system and method for controlling the main field current in an electrical generator is disclosed. The system can include a controller to sense the voltages and currents in the system to identify load faults. The system can also comprise one or more switches and an energy dissipator to absorb, store, or dissipate the main field current in the event of a load fault, such as a short circuit. In the event of a load fault, the controller can change the position of the one or more switches to redirect the main field current from the main field windings of the rotor to the energy dissipator. The energy dissipator can absorb or store the main field current significantly reducing the time required to stop the output current of the generator.

主权项

1. A system for regulating a main field current in an electrical generator comprising:
a controller, connected to the main field circuit of the electrical generator, to monitor a voltage in the system and to switch one or more switches; an energy dissipator, with a first end and a second end, to dissipate energy from the system; a first switch connected to a first leg of the main field circuit and the first end of the energy dissipator; and a second switch connected to a second leg of the main field circuit and the second end of the energy dissipator; wherein the first switch is on and the second switch is off to provide the main field current to a main field winding of the electrical generator in a normal operating condition; and wherein the first switch is off and the second switch is on to direct the main field current to the energy dissipator in a load fault condition.