METHOD OF CHANGING REVOLUTION OF AC MOTOR AND VARIABLE SPEED AC MOTOR DEVICE FOR THE METHOD

Title:

METHOD OF CHANGING REVOLUTION OF AC MOTOR AND VARIABLE SPEED AC MOTOR DEVICE FOR THE METHOD

Document Type and Number:

Japanese Patent JPS63154096

Kind Code:

A

Abstract:

A method for infinite speed variation of A.C. motor by means of slip-converter with combination of at least two asynchronous motors, a slip motor, a converter motor comprising two rotors, etc., and an infinitely variable speed A.C. motor according to this method are disclosed. The combination is called the motor Type I in which the rotary magnetic field is used to perform frequency-converting and speed variation of the motor, or an A.C. potential having required frequency induced by the other rotor of the converter motor is used for turning an auxiliary motor. The combination is called the motor Type II in which an A.C. potential having required frequency induced by the other rotor of the converter motor is used for feedback to an electric network. The motor type I without an electric brush an a commutator, cabable of reversing rotation, has a wide variable speed range from zero. It is easy to start with no overcurrent and can be started frequently. It has high reliability and overload capacity. The performance of the motor is better at lower speed. In high power operation these said advantages are still better. The motor Type II is suitable for use in the fields where the motors with infinite speed variation are used. It can also be used for explosion-proof equipment with infinite speed variation. The motor Type II with constant outpunt torque is small simple and sturdy in construction, capable of reversing rotation. It is inexpensive and suitable for speed variation of blower, fan and pump.

Inventors:

CHIYAN YONNIN
TAO FUENBAI

Application Number:

JP7261486A

Publication Date:

June 27, 1988

Filing Date:

April 01, 1986

Export Citation:

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Assignee:

CHIYAN YONNIN
TAO FUENBAI
SHIYAN E DAO IND DEV CO LTD

International Classes:

H02K17/36; H02P5/74; H02P21/04; H02K16/00; H02P23/00; H02P23/03; H02P23/07; H02P23/24; H02P25/02; (IPC1-7): H02K16/00; H02K17/30; H02P7/36

Attorney, Agent or Firm:

Masaaki Yonehara (1 person outside)

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