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Title:
POLYPHASE MOTOR
Document Type and Number:
Japanese Patent JP2004180419
Kind Code:
A
Abstract:

To enhance the efficiency of a motor and reduce the surge voltage, in a wide range of drive frequency, in a case where two phases of winding is wound on each magnetic pole of a stator and the winding is wound on each magnetic pole so that the adjacent magnetic poles of the stator may have reverse polarity.

Two phases of winding 4 to be wound on each magnetic pole of the stator 1 is wound, being positioned so that the lead wires 4a of each phase constituting the winding 4 of those phases may adjoin each other. Hereby, the two phases of winding 4 wound on each magnetic pole becomes roughly the same in the number of turns, the length of winding, and the positional relation of the winding 4 to the stator core, and the electric and magnetic properties of the two phases of winding 4 wound on each magnetic pole are uniformed, and the impedance values of the two phases of winding 4 concerned become roughly the same. Hereby, the efficiency of the motor is enhanced, and the surge voltage working on a switching element is reduced.


Inventors:
TAKURA TOSHIYASU
INAMOTO JUNYA
Application Number:
JP2002000343563
Publication Date:
June 24, 2004
Filing Date:
November 27, 2002
Export Citation:
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Assignee:
TOSHIBA TEC KK
International Classes:
H02K1/22; H02K3/18; H02K3/28; H02K21/12; H02M1/00; H02M7/48; H02P6/10; (IPC1-7): H02K21/12; H02K1/22; H02K3/18; H02K3/28; H02M7/48; H02P6/10
Attorney, Agent or Firm:
柏木 慎史
小山 尚人
柏木 明