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:
Jan. 11, 2005
Filed:
Mar. 08, 2001
Lars Henrik Hansen, Roskilde, DK;
Lars Henrik Hansen, Roskilde, DK;
Forskningscenter Riso, Roskilde, DK;
Abstract
A method of controlling the speed of rotation of a turbine, the turbine comprising a rotor, the method comprising the steps of measuring or estimating power or torque related to the energy production of the turbine, processing the measured or estimated power or torque so as to obtain a corresponding rotational speed, comparing the obtained rotational speed to a first predefined threshold value and to a second predefined threshold value, the second predefined threshold value being larger than the first predefined threshold value, and controlling the speed of rotation of the rotor according to the obtained rotational speed, so as to obtain a predetermined energy production from the turbine, and in such a way that in case the obtained rotational speed does not exceed the first predefined threshold value, the predetermined energy production from the turbine is optimal, in case the obtained rotational speed exceeds the first predefined threshold value, but does not exceed the second predefined threshold value, the predetermined energy production from the turbine is optimal, in case the obtained rotational speed exceeds the second predefined threshold value, the speed of rotation of the rotor of the turbine is reduced in a predefined manner to a value corresponding to the first predefined threshold value.