Method and apparatus for overspeed prevention using open-loop re

Details Method and apparatus for overspeed prevention using open-loop re Method and apparatus for overspeed prevention using open-loop re

1995-09-25

1997-03-11

Larson, James

Rotary kinetic fluid motors or pumps

Method of operation

415 15, 415 36, F01D 1706

Patent

active

056094655

ABSTRACT:
A method and apparatus are disclosed for controlling the rotational speed of gas and steam turbines, and hot gas expanders, with each of these drivers driving a rotational load by way of a shaft. To accomplish this control technique, it is necessary to easily and accurately calculate the amount of power which must be shed by the driver(s) to maintain a constant speed, i.e., neither accelerating nor decelerating. Action must be taken to reduce the power applied to the shaft by this amount. The method incorporates an open-loop approach and uses a time derivative to moderate the open-loop action accordingly.

REFERENCES:
patent: 3698829 (1972-10-01), Kubo et al.
patent: 3874167 (1975-04-01), Katsume et al.
patent: 4045955 (1977-09-01), Brannstrom et al.
patent: 4117668 (1978-10-01), Elsaesser et al.
patent: 4354800 (1982-10-01), Kuwabara
patent: 4658590 (1987-04-01), Higashi et al.
patent: 5180923 (1993-01-01), Tyler
patent: 5252860 (1993-10-01), McCarty et al.
patent: 5272637 (1993-12-01), Urshidani et al.

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