High voltage direct current system with improved generator excitation
First Claim
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1. A variable frequency generator, comprising:
- a main stator comprising of multi-phase armature windings;
an exciter field winding,a rotating portion comprising exciter multi-phase windings, a main field winding, and an amplification component between the exciter multi-phase windings and the main field winding,wherein the amplification component operates at a variable duty cycle to maintain a phase voltage of the armature windings near independent of a shaft speed of the variable frequency generator; and
a rotating controller,wherein the rotating controller interfaces with and manages operations of the amplification component.
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Abstract
According to one embodiment of the present invention, a variable frequency generator is provided. The variable frequency generator can comprise a main stator comprising multi-phase armature windings and an exciter field winding; and a rotating portion comprising an exciter multi-phase windings, a main field winding, and an amplification component between the exciter windings and the main field winding, wherein the amplification component operates at a variable duty cycle to maintain a phase voltage of the main stator armature windings near independent of a shaft speed of the variable frequency generator.
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Citations
14 Claims
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1. A variable frequency generator, comprising:
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a main stator comprising of multi-phase armature windings; an exciter field winding, a rotating portion comprising exciter multi-phase windings, a main field winding, and an amplification component between the exciter multi-phase windings and the main field winding, wherein the amplification component operates at a variable duty cycle to maintain a phase voltage of the armature windings near independent of a shaft speed of the variable frequency generator; and a rotating controller, wherein the rotating controller interfaces with and manages operations of the amplification component. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A high voltage direct current system, comprising a variable frequency generator that comprises:
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a main stator comprising armature windings; an exciter field winding; and a rotating portion comprising exciter multi-phase windings, a main field winding, and an amplification component between the exciter multi-phase windings and the main field winding, wherein the amplification component operates at a variable duty cycle to maintain a phase voltage of the main stator armature windings near independent of a shaft speed of the variable frequency generator; and a rotating controller configured to interface with and manage operations of the amplification component by detecting at least one input signal from the exciter multi-phase windings, retrieving a value based on the at least one input signal, and providing an input for at least one gate of the amplification component. - View Dependent Claims (13, 14)
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Specification