Invention Application
- Patent Title: Brushless permanent magnet machine with reduced cogging and torque ripple and method of producing the same
- Patent Title (中): 具有减少齿槽和扭矩波动的无刷永磁机及其制造方法
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Application No.: US10625926Application Date: 2003-07-24
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Publication No.: US20050017589A1Publication Date: 2005-01-27
- Inventor: Dan Ionel , Stephen Dellinger
- Applicant: Dan Ionel , Stephen Dellinger
- Applicant Address: US WI Milwaukee
- Assignee: A.O. Smith Corporation
- Current Assignee: A.O. Smith Corporation
- Current Assignee Address: US WI Milwaukee
- Main IPC: H02K1/27
- IPC: H02K1/27 ; H02K3/28 ; H02K29/03 ; H02K21/12

Abstract:
An electrical machine comprises a stator and a rotor. The rotor includes a plurality of stator teeth and a winding with compact coils disposed on the teeth. The winding has (m) phases and (p) poles; where (m) is an integer and is greater than or equal to two; where (p) is an integer, is greater than or equal to two, and is an even number. The rotor has a magnetization pattern including a magnetization skew. In some constructions, each stator includes one or more channels along a surface adjacent to the rotor. The channels can be of various shapes including a trapezoidal shape or a curvilinear shape.
Public/Granted literature
- US06940198B2 Brushless permanent magnet machine with reduced cogging and torque ripple and method of producing the same Public/Granted day:2005-09-06
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