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:
Oct. 03, 2017
Filed:
Aug. 01, 2014
Xinzhang Wu, Oviedo, FL (US);
Hanzhou Liu, Oviedo, FL (US);
Yang HU, Oviedo, FL (US);
Louis Chow, Orlando, FL (US);
Jon Harms, Seminole, FL (US);
Martin Epstein, Seminole, FL (US);
Wei Wu, Orlando, FL (US);
Xinzhang Wu, Oviedo, FL (US);
Hanzhou Liu, Oviedo, FL (US);
Yang Hu, Oviedo, FL (US);
Louis Chow, Orlando, FL (US);
Jon Harms, Seminole, FL (US);
Martin Epstein, Seminole, FL (US);
Wei Wu, Orlando, FL (US);
Other;
Abstract
The present invention is a high efficiency permanent magnet machine capable of maintaining high power density. The machine is operable over a wide range of power output. The improved efficiency is due in part to copper wires with a current density lower than traditional designs and larger permanent magnets coupled with a large air gap. In a certain embodiment wide stator teeth are used to provide additional improved efficiency through significantly reducing magnetic saturation resulting in lower current. The machine also has a much smaller torque angle than that in traditional design at rated load and thus has a higher overload handling capability and improved efficiency. In addition, when the machine is used as a motor, an adaptive phase lag compensation scheme helps the sensorless field oriented control (FOC) scheme to perform more accurately.