H - Electricity – 02 – K
Patent
H - Electricity
02
K
H02K 19/36 (2006.01) H02J 9/06 (2006.01) H02K 1/18 (2006.01) H02K 5/26 (2006.01) H02K 7/02 (2006.01) H02K 7/12 (2006.01) H02K 19/02 (2006.01)
Patent
CA 2122019
2122019 9400905 PCTABS00030 Proximity switches and circumferentially movable stator windings allow a motor-generator (2) to simultaneously sense and switch from a synchronous motor position to a synchronous generator position. The mechanism replaces the conventional separate sensing and switching of motor-generator functions. Automatic rotational repositioning of the stator (21) maintains constant voltage and prevents the generation of transient voltages or harmonics. The stator flux leads the rotor magnetic flux slightly in a motor position. As the stator field weakens due to a failure of the normal power supply, the counter torque also weakens and the stator windings are biased to begin to turn with the rotor (27) until the rotor and stator fields are in step, i.e., when virtually no current is generated or consumed or until a generator position is reached. The dynamic stator may also be used in electric motors or generators to filter or cushion variations in the power supply or in the load.
Farkas Otto
Oyen Wiggs Green & Mutala Llp
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