Multiple speed single phase motor

Details Multiple speed single phase motor Multiple speed single phase motor

1990-12-28

1993-07-13

Shoop, Jr., William M.

Electricity: motive power systems

Induction motor systems

Primary circuit control

318785, 318794, H02P 144

Patent

active

052277100

ABSTRACT:
A multiple speed alternating current motor is disclosed for operation from a source of single phase alternating current power. For high speed operation, first and second windings are supplied with operating power through a multiple position switch. These windings are electrically angularly displaced from one another by 90.degree. on the stator core and are inductively coupled to the rotor of the motor. Maximum starting torque and maximum speed operation of the motor is provided in this condition of operation. When the switch is operated to a low speed position, the impedence of the second winding is increased.

REFERENCES:
patent: 1780881 (1930-11-01), Kennedy
patent: 1886895 (1932-11-01), Myers
patent: 1961793 (1934-06-01), Schaefer
patent: 2023237 (1935-12-01), Morrill
patent: 2068559 (1937-01-01), Michelsen
patent: 4794288 (1988-12-01), Lewus

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