Methods and apparatus for controlling a motor/generator

Details Methods and apparatus for controlling a motor/generator Methods and apparatus for controlling a motor/generator

2006-10-03

2006-10-03

Ro, Bentsu (Department: 2837)

Electricity: motive power systems

Field or secondary circuit control

Plural, diverse or diversely connected or controlled sources...

C318S162000, C318S431000

Reexamination Certificate

active

07116073

ABSTRACT:
Methods and apparatus provide for: commutating windings of a polyphase machine such that electromagnetic fields of stator and rotor phases of the polyphase machine produce at least one of motoring and generating torque; providing a first rotor excitation voltage having substantially no DC component when a rotational speed of the polyphase machine is below a predetermined value; and providing a second rotor excitation voltage having a DC component when the rotational speed of the polyphase machine is above the predetermined value.

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