System and method for starting a wound rotor motor

Details System and method for starting a wound rotor motor System and method for starting a wound rotor motor

2007-10-08

2008-11-25

Ip, Paul (Department: 2837)

Electricity: motive power systems

Induction motor systems

Primary circuit control

C318S466000, C700S286000, C307S115000, C361S036000

Reexamination Certificate

active

07456601

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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Morel, L., et al., Double-fed induction machine: converter optimisation and field oriented control w/o pos'n sensor; IEE- Proc-Electr. Power Appl., vol. 145, No. 4, Jul. 1998.

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