Electricity: motive power systems – Battery-fed motor systems
Patent
1995-05-01
1996-11-12
Ip, Paul
Electricity: motive power systems
Battery-fed motor systems
388803, 318786, H02P 504
Patent
active
055743412
ABSTRACT:
A control circuit for controlling the excitation current in a compound motor includes a limiting switch connected in series with the shunt field winding of the compound motor. The limiting switch is closed whenever either the speed of the motor is excessive, the armature current is excessive, or there is insufficient back EMF due to a light load.
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