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:
Apr. 12, 2005
Filed:
Oct. 22, 2003
Richard Shaun Welches, Amherst, NH (US);
Daniel P. Hohm, Nashua, NH (US);
Jian Wen, North Andover, MA (US);
Kevin E Lerow, Lowell, MA (US);
Richard Griessel, Derry, NH (US);
Thomas O'reilly, Hollis, NH (US);
Richard Shaun Welches, Amherst, NH (US);
Daniel P. Hohm, Nashua, NH (US);
Jian Wen, North Andover, MA (US);
Kevin E LeRow, Lowell, MA (US);
Richard Griessel, Derry, NH (US);
Thomas O'Reilly, Hollis, NH (US);
Youtility, Inc., Hudson, NH (US);
Abstract
The invention in the simplest form is an improved variable speed engine/generator set with an integrated power conditioning system and control method, used to generate high quality AC power with optimum fuel efficiency and reduced emissions. The variable speed generator control scheme allows for load adaptive speed control of engine and generator field. The transformerless power inverter topology and control method provides the necessary output frequency, voltage and/or current waveform regulation, harmonic distortion rejection, and provides for single phase, or unbalanced loading.