Skewing of pole laminations of a switched reluctance machine to reduce acoustic noise
Patent 5266859 Issued on November 30, 1993. Estimated Expiration Date: 
April 8, 2013. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
April 8, 2013. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 1835505 Variable reluctance electric motor with progressively saturable poles Regenerative unipolar converter for switched reluctance motors using one main switching device per phase Patent #: 4684867 InventorApplicationNo. 043700 filed on 04/08/1993US Classes:310/216, Core features310/51, Vibration or noise suppression310/217, Securing laminae310/258, Frame and core type310/261Rotor structureExaminersPrimary: Stephan, Steven L.Assistant: Jones, Judson H. Attorney, Agent or FirmForeign Patent References
International ClassH02K 001/06AbstractThe laminations respectively comprising the rotor and stator poles of a switched reluctance machine (SRM) are skewed as they are stacked during machine assembly in order to reduce the tendency of the SRM to flatten and thereby assume an oval shape during machine operation. As a result, the acoustic noise generated by the SRM during machine operation is substantially reduced. | |
