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:
Dec. 30, 1980
Filed:
May. 30, 1978
Applicant:
Inventors:
Narendra Mohan, Minneapolis, MN (US);
Mahmoud Riaz, Minneapolis, MN (US);
Assignee:
The Regents of the University of Minnesota, Minneapolis, MN (US);
Primary Examiner:
Int. Cl.
CPC ...
F03D / ; H02P / ;
U.S. Cl.
CPC ...
322 35 ; 322 47 ; 322 95 ; 290 44 ; 290 55 ;
Abstract
A wind turbine drives the squirrel-cage rotor of a capacitively excited induction generator. The amount of excitation is controlled in accordance with the output voltage of the stator and hence the speed of the wind turbine. The generating system is capable of operating at high efficiency over a wide speed range, since the electrical output frequency is allowed to vary with the rotor speed. The electrical power supplied by the induction generator is used for heating purposes within a nearby building.