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:
Aug. 19, 2014
Filed:
Sep. 10, 2008
Paul H. Kelley, Boca Raton, FL (US);
Paul H. Kelley, Boca Raton, FL (US);
The PowerWise Group, Inc., Boca Raton, FL (US);
Abstract
A motor controller () and method for maximizing the energy savings in an AC induction motor () at every load wherein the motor is calibrated at two or more load points to establish a control line (), which is then programmed into a non-volatile memory () of the motor controller. A DSP-based closed-loop motor controller observes the motor parameters of the motor such as firing angle/duty cycles (), voltage (), current () and phase angles to arrive at a minimum voltage necessary to operate the motor at any load along the control line. The motor controller performs closed-loop control to keep the motor running at a computed target control point, such that maximum energy savings are realized by reducing voltage through pulse width modulation.