发明名称 |
INTERLACED CONDUCTOR/BACK-IRON SECONDARY FOR INDUCTION MOTORS |
摘要 |
An induction motor is provided with a secondary portion 20 comprising an interlaced conductor/back-iron (or ferromagnetic) portion 60 and a purely ferromagnetic back-iron portion 62. The interlaced portion 60 comprises an electrically conductive lattice (or foam) material 61 having pores 63 filled with a ferromagnetic material which results in two interlaced lattices 61,63 which are continuous through a shared volume. The interlaced region 60 provides both good magnetic permeability for passing magnetic flux 30 and good electrical conductivity for flowing induced electrical currents necessary for induction motors. As a result, the effective magnetic gap G1 is minimized while also providing a low-cost induction motor. Alternatively, the lattice 61 may be a ferromagnetic material which is embedded with a conductor. |
申请公布号 |
EP0845170(A1) |
申请公布日期 |
1998.06.03 |
申请号 |
EP19960927406 |
申请日期 |
1996.08.14 |
申请人 |
UNITED TECHNOLOGIES CORPORATION |
发明人 |
PIECH, ZBIGNIEW;MILLER, ROBIN, M.;KETTLE, JOHN, L. |
分类号 |
H02K17/02;H02K41/025;H02K41/03;(IPC1-7):H02K41/03 |
主分类号 |
H02K17/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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