Electrical generator or motor structure – Dynamoelectric – Rotary
Reexamination Certificate
2007-03-16
2011-12-06
Leung, Quyen (Department: 2834)
Electrical generator or motor structure
Dynamoelectric
Rotary
C264S427000
Reexamination Certificate
active
08072109
ABSTRACT:
To improve tranquility and controllability of an iron core-equipped permanent magnet motor with an improved maximum energy product (BH)maxby improving shape compatibility of a radial anisotropic magnet, there is provided a radial anisotropic magnet manufacturing method of fixing magnet powder in a net shape so as to maintain a magnetic anisotropic (C-axis) angle of a magnet with respect to a tangential line and for performing a deformation with a flow so as to have a predetermined circular arc shape or a predetermined annular shape. Particularly, by performing a deformation with a viscous flow or an extension flow, a deformability of the magnet is improved, and thus shape compatibility with respect to a thickness is improved. A C-axis angle θ with respect to a tangential direction is controlled at an arbitrary position and an arbitrary angle so as to reduce cogging torque without separating a magnetic pole into segments.
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Kawamura Kiyomi
Murakami Hiroshi
Yamashita Fumitoshi
Desai Naishadh
Leung Quyen
Panasonic Corporation
Wenderoth , Lind & Ponack, L.L.P.
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