The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 20, 1980
Filed:
Oct. 16, 1978
Serge Mathieu, Ste-Foy, CA;
H.O.P. Consulab Inc., Quebec, CA;
Abstract
The specification discloses an apparatus and a method for regulating the power factor in an electrical distributing-network line; according to one embodiment of the invention, the active line power is measured by means of a transducer, the output from which is a continuous voltage proportional to the active power supplied by the line; the reactive power of the line is then measured by means of a second transducer, the output from which is also a continuous voltage proportional to the reactive power supplied by the line; the voltage supplied by the active-power transducer is then divided by voltage dividers in order to obtain two reference voltages L.sub.1, L.sub.2, the values of which indicate the fixed limits for the line power factor; the voltage supplied by the reactive-power transducer is then compared with reference voltages L.sub.1, L.sub.2 for the purpose of obtaining two logic levels indicating one of the three following operations: one or more capacitors are connected if the power factor is below the limit L.sub.1 and is inductive; one or more capacitors are disconnected if the power factor is above the limit L.sub.2 and is inductive; no action is taken if the power factor is above the limit L.sub.1 and below the limit L.sub.2 and is inductive.