Field current control for generator during build-up
First Claim
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1. Method for controlling connection of a generator to an energized bus independent of the use of a direct generator speed sense function, comprising the steps of:
- a. detecting a voltage differential between the generator voltage and the bus voltage;
b. connecting the generator to the bus when the detected voltage differential reduces to a selected threshold; and
c. limiting generator field current during generator build-up prior to connecting the generator to the bus to delay the voltage differential reducing to said threshold so that the generator attains a desired speed before being connected to the bus.
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Abstract
Apparatus and method for connecting a generator to an energized bus includes a circuit for determining voltage differential between the generator voltage and the bus voltage; a circuit for connecting the generator to the bus when the voltage differential reaches a predetermined threshold; a circuit for limiting the generator field current during build-up so that the generator reaches a predetermined speed before the generator is connected to the bus.
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Citations
17 Claims
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1. Method for controlling connection of a generator to an energized bus independent of the use of a direct generator speed sense function, comprising the steps of:
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a. detecting a voltage differential between the generator voltage and the bus voltage; b. connecting the generator to the bus when the detected voltage differential reduces to a selected threshold; and c. limiting generator field current during generator build-up prior to connecting the generator to the bus to delay the voltage differential reducing to said threshold so that the generator attains a desired speed before being connected to the bus. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. Apparatus for controlling connection of a generator to an energized bus, comprising:
- means for determining voltage differential between the generator voltage and the bus voltage;
means for connecting the generator to the bus when said voltage differential reaches a predetermined threshold; and
means for limiting the generator field current during build-up prior to connecting the generator to the bus so that the generator reaches a predetermined speed before the generator is connected to the bus. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17)
- means for determining voltage differential between the generator voltage and the bus voltage;
Specification