Miscellaneous active electrical nonlinear devices – circuits – and – Gating – Compensation for variations in external physical values
Patent
1992-12-29
1994-12-13
Wysocki, Jonathan
Miscellaneous active electrical nonlinear devices, circuits, and
Gating
Compensation for variations in external physical values
318434, 318254, 323907, 363 58, 374163, 307116, 361 23, 327322, H03K 513, H02K 1732
Patent
active
053732057
ABSTRACT:
A method and apparatus for limiting current through a switching device supplying current to a load. A control evaluates a model representing the switching device temperature as a nonlinear function of current and time. The model compares the temperature of the switching device to a maximum allowable temperature. The current limit is defaulted to peak current; and in response to the model detecting a temperature in excess of the maximum allowable temperature, a nominal current limit is set. The current limit reset to peak current after the model detects a switching device temperature a predetermined magnitude below the maximum allowable temperature.
REFERENCES:
patent: 3617807 (1971-11-01), Kessetring
patent: 3643142 (1972-02-01), McBride, Jr.
patent: 3805184 (1974-04-01), Visioli et al.
patent: 3832612 (1974-08-01), Woods
patent: 3868554 (1975-02-01), Konrad
patent: 3906797 (1975-09-01), Turner
patent: 3959713 (1976-05-01), Davis et al.
patent: 3972237 (1976-08-01), Turner
patent: 4257092 (1981-03-01), Prines et al.
patent: 4300079 (1981-11-01), Kawada et al.
patent: 4302711 (1981-11-01), Morser et al.
patent: 4473783 (1984-09-01), Vermesse
patent: 4494064 (1985-01-01), Harkness
patent: 4514665 (1985-04-01), Melocik et al.
patent: 4700130 (1987-10-01), Bloemen
patent: 4972136 (1990-11-01), Banura
patent: 5079455 (1992-01-01), McCafferty et al.
Siemen's Manual 36SC61, Transistor PWM Converters, Chapter 3.3.2, Closed-loop control, pp. 3-26 and 3-27.
Busick Rickey L.
Taylor Mark S.
Walsh Stephen T.
Cabeca John W.
Cincinnati Milacron Inc.
Wysocki Jonathan
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