Excitation control of dual-wound machines for coupling mitigation
| DWPI Title: Dual-wound machine for electric ship power system has dual-wound generator that mitigates dynamic coupling between two sets of phase windings when supplying power to separate powered zones |
| Abstract: A dual-wound machine comprises a dual-wound generator supplying power to two separate powered zones. The generator comprises a wound rotor with a field winding and a stator with two sets of phase windings and a field control loop that controls the excitation voltage applied to the field winding and therefore the magnetic field produced by the rotor, in order to maintain a constant field flux in the generator and mitigate dynamic coupling between the two sets of phase windings when supplying power to unbalanced loads. |
| Use: Dual-wound machine for electric ship power system. |
| Advantage: Offers dual-wound machine that provides better power quality by tighter regulation of stator magnetomotive force (MMF). Allows simplification of power electronics and enables connected battery to charge or discharge to one set of windings while another set of windings is always used to provide power to electrical devices on system. Reduces effects of stator phase windings on each other when supplying unbalanced loads. |
| Novelty: The dual-wound machine has a wound-rotor dual-wound generator that supplies power to two separate powered zones having unbalanced loads. The dual-wound generator comprises a wound rotor having a field winding that produces a magnetic field, a stator having two sets of phase windings that supply power to a separate powered zone, and a field control having a feedback loop that controls the excitation voltage applied to the field winding and the magnetic field produced by the rotor. The dual-wound generator mitigates dynamic coupling between the two sets of phase windings when supplying power to the separate powered zones. |
| Filed: 3/26/2020 |
| Application Number: US16831117A |
| Tech ID: SD 14963.1 |
| This invention was made with Government support under Contract No. DE-NA0003525 awarded by the United States Department of Energy/National Nuclear Security Administration. The Government has certain rights in the invention. |
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