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Title:
SHIFTING MAGNETIC FIELD GENERATOR
Document Type and Number:
Japanese Patent JP3452709
Kind Code:
B2
Abstract:

PROBLEM TO BE SOLVED: To simplify the constitution of a power source circuit for generating the shifting magnetic fields of high frequency and low frequency at the same time, by classifying a plurality of electric coils into the first and second groups, and equipping this generator with the first energization means which applies multiphase AC voltage of high frequency and the second energization means which applies multiphase AC voltage of low frequency.
SOLUTION: Twenty four slots going toward the periphery in radial direction are made at equal pitches at the inside periphery of a magnetic core 5, and with these slots as guides, electric coils C1-C24 are wound around the barrel of the core 5. And, the electric coils C1-C24 are classified into two groups, and the first group is connected to a power circuit 20A which generates high frequency of three-phase AC voltage and the second group is done to a power circuit 20B which generates low frequency of three-phase AC voltage. Hereby, a power circuit for generating the shifting magnetic filed of high frequency and low frequency at the same time can be constituted simply without using a wide frequency band of AC power circuit.


Inventors:
Fujisaki, Keisuke
Application Number:
JP1995000286241
Publication Date:
September 29, 2003
Filing Date:
November 02, 1995
Export Citation:
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Assignee:
NIPPON STEEL CORP
International Classes:
B22D11/04; B22D11/10; B22D11/115; H02K44/00; (IPC1-7): H02K44/00; B22D11/04
Attorney, Agent or Firm:
杉信 興