Power converter for doubly-fed power generator system

Details Power converter for doubly-fed power generator system Power converter for doubly-fed power generator system

2007-01-18

2009-02-03

Ponomarenko, Nicholas (Department: 2834)

Prime-mover dynamo plants

Electric control

Fluid-current motors

C290S055000

Reexamination Certificate

active

07485980

ABSTRACT:
An excitation power converter of a doubly-fed generator is protected from excess current to be caused by ground fault or system disturbance and operation continuity of the power converter is ensured. In a power converter system, in order not to flow excess current generated in secondary windings of the doubly-fed generator into the power converter, a rectifier is connected in parallel to the power converter via a reactor, a DC link of the rectifier is connected to a DC link of the power converter, excess current flowing from the secondary windings is separately flowed at a reactor impedance ratio to reduce an amount of current flowing into the power converter, and a semiconductor switching element of an excess current generation arm of the power converter is set to an on-state.

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