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. 17, 2011
Filed:
May. 22, 2007
Lei Zhou, Orlando, FL (US);
Liping Zheng, Cerritos, CA (US);
Louis Chow, Orlando, FL (US);
Jayanta S. Kapat, Oviedo, FL (US);
Thomas X. Wu, Oviedo, FL (US);
Krishna M. Kota, Orlando, FL (US);
Xiaoyi LI, Orlando, FL (US);
Dipjyoti Acharya, Orlando, FL (US);
Lei Zhou, Orlando, FL (US);
Liping Zheng, Cerritos, CA (US);
Louis Chow, Orlando, FL (US);
Jayanta S. Kapat, Oviedo, FL (US);
Thomas X. Wu, Oviedo, FL (US);
Krishna M. Kota, Orlando, FL (US);
Xiaoyi Li, Orlando, FL (US);
Dipjyoti Acharya, Orlando, FL (US);
University of Central Florida Foundation, Inc, Orlando, FL (US);
Abstract
A high speed centrifugal compressor for compressing fluids includes a permanent magnet synchronous motor (PMSM) having a hollow shaft, the being supported on its ends by ball bearing supports. A permanent magnet core is embedded inside the shaft. A stator with a winding is located radially outward of the shaft. The PMSM includes a rotor including at least one impeller secured to the shaft or integrated with the shaft as a single piece. The rotor is a high rigidity rotor providing a bending mode speed of at least 100,000 RPM which advantageously permits implementation of relatively low-cost ball bearing supports.