Electrical generator or motor structure – Dynamoelectric – Rotary
Reexamination Certificate
2005-11-30
2009-06-02
Nguyen, Tran N (Department: 2834)
Electrical generator or motor structure
Dynamoelectric
Rotary
C310S156450
Reexamination Certificate
active
07541710
ABSTRACT:
Provided is a rotating electric machine which can restrain vibration and noise induced by a radial electromagnetic force of the rotating electric machine, and in which a rotor is divided into first to fourth four rotating pieces having axial lengths of 0.29L, 0.71L, 0.71L and 0.29L where 2L is an axial length of a rotor or stator core, and secondary conductors defining effective magnetic pole opening angles, are arranged being shifted by a value which is equal to a phase difference of electric angle between axial sections of the rotor pieces in order to define skews so that phase differences of electric angles are continuous between axial sections of the first and second rotor pieces, the skews being continuous between the third and fourth rotor pieces but being not continuous between the second and third rotor pieces arranged being shifted by a value which is equal to a phase difference of electric angle between axial sections of the rotor.
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Nemoto Kanako
Nishihama Kazuo
Shima Kazuo
Takahashi Kazuhiko
Takano Yasushi
Crowell & Moring LLP
Hitachi , Ltd.
Nguyen Tran N
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