patent · US6879075
Trapezoidal shaped magnet flux intensifier motor pole arrangement for improved motor torque density
12 April 2005
Indexed reference — no copy held
This patent is cited by material in the archive, so it is indexed here by number, title and inventor. The archive holds no copy of its text.
Abstract
A permanent magnet synchronous machine with improved torque and power characteristics. A circumferential-oriented rotor assembly is provided with alternating permanent magnets and magnetic pole pieces. In order to reduce the amount of leakage flux in the rotor and increase the effective length of the permanent magnet, a trapezoidal or otherwise tapered permanent magnet structure is used. By alternating trapezoidal permanent magnet, and magnetic pole pieces, a higher intensity...
Provenance
- Collection
- Cited prior art
- Original PDF
- patentimages.storage.googleapis.com →
- Filed
- 2003-01-31
- Source
- Google Patents bibliographic record
- Granted
- 2005-04-12
- Inventors
- Raymond Mark Calfo; Mark Peter Krefta; Curtiss Wright Electro Mechanical Corp