Invention Grant
- Patent Title: Interior permanent magnet electric machine with flux distributing voids
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Application No.: US16242515Application Date: 2019-01-08
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Publication No.: US10797546B2Publication Date: 2020-10-06
- Inventor: Seong Taek Lee
- Applicant: BorgWarner Inc.
- Applicant Address: US MI Auburn Hills
- Assignee: BorgWarner Inc.
- Current Assignee: BorgWarner Inc.
- Current Assignee Address: US MI Auburn Hills
- Agency: Bose McKinney & Evans LLP
- Main IPC: H02K1/16
- IPC: H02K1/16 ; H02K1/27

Abstract:
An electric machine having a rotor with a rotor core formed out of magnetically permeable material and defines a plurality of poles. Each pole includes a plurality of discrete axially extending magnet slots with at least one permanent magnet in each magnet slot. Each pole has a radial centerline and includes a plurality of voids defined by the rotor core. For each pole the magnet slots include at least one central magnet slot and two outer magnet slots, the outer magnet slot are positioned on opposite circumferential sides of the radial centerline of the pole and are at least partially positioned radially outwardly of a radially outermost edge of the at least one central magnet slot. Each of the plurality of voids is spaced from each of the magnet slots and positioned circumferentially between the outer magnet slots and radially outwardly of the at least one central magnet slot.
Public/Granted literature
- US20200220401A1 INTERIOR PERMANENT MAGNET ELECTRIC MACHINE WITH FLUX DISTRIBUTING VOIDS Public/Granted day:2020-07-09
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