Electricity: single generator systems – Automatic control of generator or driving means – Voltage of generator or circuit supplied
Patent
1990-07-13
1991-01-29
Wong, Peter S.
Electricity: single generator systems
Automatic control of generator or driving means
Voltage of generator or circuit supplied
322 25, H02J 714
Patent
active
049889419
ABSTRACT:
A method of regulating the output voltage of an electric generator combines a signal representative of the actual output of the generator with a reference signal to obtain a control signal proportional to the difference between the desired output and the actual output. The control signal is modified by a non-linear transfer function which is representative of the gain of the generator over an expected operating speed and load range. The exciter field current of the generator is controlled in response to the modified control signal, thereby causing the actual output to approach the desired output. Compensation for variation in generator gain is provided by a non-linear element, inserted in the voltage control loop such that the total loop gain is substantially constant over the operating speed and load range of the generator.
REFERENCES:
patent: 3775666 (1973-11-01), Smith
patent: 3916291 (1975-10-01), Raczkowski
patent: 4044296 (1977-08-01), Dhyanchand et al.
patent: 4446417 (1984-05-01), Fox et al.
patent: 4486702 (1984-12-01), Edwards
Lenart R. P.
Peckman Kristine
Westinghouse Electric Corp.
Wong Peter S.
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