System and method for starting a wound rotor motor
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United States of America Patent
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Nov 25, 2008
Grant Date -
Jan 31, 2008
app pub date -
Oct 8, 2007
filing date -
May 13, 2005
priority date (Note) -
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status (Latency Note)
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Abstract
A system and method for starting and regulating a wound rotor motor especially during the period between inactivity and a speed determined by the voltage ratings of the drive system. In a first embodiment, a starting resistor and a starting bypass contactor are connected between the rotor of the motor and a low voltage source inverter. In an alternative embodiment, the arrangement of the first embodiment is altered by connecting a shorting contactor on one side to the junction of the voltage source inverter, the starting resistor and the starting bypass contactor so as to be short circuited on the opposite side of the shorting contactor.
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