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. 02, 2006
Filed:
Nov. 04, 2004
Steven J. Fredette, South Windsor, CT (US);
Rishi Grover, Vernon, CT (US);
Steven J. Fredette, South Windsor, CT (US);
Rishi Grover, Vernon, CT (US);
UTC Power, LLC, South Windsor, CT (US);
Abstract
A prime mover () in a heat recovery system drives an induction generator () which feeds power to a utility grid () through a breaker () but also powers a load including auxiliary induction motors (). To provide acceptable waveform and power factor, the auxiliary equipment is driven through IGBT switched bridge converters () by DC voltage () generated by an IGBT switched bridge converter (), instead of three-phase diode rectifiers (). The switched bridge converter controller () is responsive to a system process controller () which causes the switched bridge controller () to be driven in response to the voltage () and current () on the generator bus (). This eliminates the need for harmonic filters () and power factor capacitors () while improving the quality of the power generated. The controller () trips the breaker if the voltage, frequency or power factor is out of limits.