Title:
STARTER FOR PERMANENT MAGNET SYNCHRONOUS MOTOR
Document Type and Number:
Japanese Patent JPS5851784
Kind Code:
A
Abstract:
PURPOSE:To increase the starting torque of a motor by connecting an anti- parallel connecting circuit of thyristors to an armature coil and triggering a thyristor with a signal synchronized with the rotating speed at the starting time. CONSTITUTION:The armature coil 1 of a 3-phase permanent magnet synchronous motor 3 is connected through 3 sets of anti-parallel connection thyristors 3 to a 3-phase power source 6. A thyristor 5 is triggered with a signal synchronized with the rotating speed from a rotary position detector 4 coupled directly with a rotor at the starting time. When the motor 3 is accelerated to the prescribed speed, the thyristor 5 is triggered with a signal synchronized with a power source voltage or a DC signal. In this manner, large starting torque can be obtained, and the starting current can be reduced.
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Inventors:
OOGUCHI KUNIOMI
Application Number:
JP14828081A
Publication Date:
March 26, 1983
Filing Date:
September 19, 1981
Export Citation:
Assignee:
OGUCHI KUNIOMI
International Classes:
H02P1/46; H02P1/52; H02P27/16; (IPC1-7): H02P1/46