Invention Grant
- Patent Title: Aspects of winding symmetry in HPO motor design
- Patent Title (中): HPO电机设计中卷绕对称的方面
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Application No.: US12008227Application Date: 2008-01-09
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Publication No.: US08299673B2Publication Date: 2012-10-30
- Inventor: Jonathan Sidney Edelson
- Applicant: Jonathan Sidney Edelson
- Applicant Address: GI
- Assignee: Borealis Technical Limited
- Current Assignee: Borealis Technical Limited
- Current Assignee Address: GI
- Main IPC: H02K17/00
- IPC: H02K17/00

Abstract:
A high phase order induction machine wound and permitted by coil symmetry to operate at fewer than the magnetically optimal number of poles is constrained by symmetry to be a two pole machine and be capable of operating on odd harmonics only, but with back-iron, end rings, and rotor core optimized for 10 pole operation, might be used normally in ‘5th harmonic’ mode, with ‘7th harmonic’ utilized to engage the ‘mesh effect’. Such a machine thus appears to be operating in the ‘1.4 harmonic’. A high phase order induction machine driven by a second harmonic drive, in which a symmetry imposed by full span windings is broken. This may be most simply accomplished through the use of short pitch windings. Other possible approaches include using non-wound slot drive, and using toroidal windings which localize coils to individual slots.
Public/Granted literature
- US20080179981A1 Aspects of winding symmetry in HPO motor design Public/Granted day:2008-07-31
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