Synchronous motors
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United States of America Patent
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-
Feb 9, 1982
Grant Date -
N/A
app pub date -
Apr 8, 1980
filing date -
Apr 19, 1979
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A synchronization arrangement for delaying excitation of the field winding (5) of a brushless synchronous motor until the motor rotor has run up approximately to synchronous speed in which the appropriate moment for applying the field excitation is determined by monitoring two signals respectively representative of the currents in two rectifying devices (11, 15) separately connected, oppositely poled, across the motor field winding.
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