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US 2025/0167653 A1Published application
Flux-mnemonic permanent magnet synchronous machine and magnetizing a flux-mnemonic permanent magnet synchronous machine
AssigneeJacobi Motors, LLC
InventorsNicolaus Radford, Mohammadreza Barzegaranbaboli, Ahmed Morsy
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Abstract
A method of changing a magnetic flux density in an air gap between a stator and a rotor in a real-time flux-mnemonic permanent magnet synchronous machine comprising permanent magnets, the method comprising applying at least one current pulse to adjust a magnetic operating point of the magnets, wherein the at least one current pulse has a duration of less than 3 ms. For applying the at least one current pulses, the method comprises consecutively applying a plurality of primitive pulses.
Claims16
A flux-mnemonic permanent magnet synchronous machine (FMPMSM), comprising:
- an annular stator having a winding;
- a rotor disposed concentric with the stator, the rotor comprising:
- at least two circumferentially magnetized adjustable permanent magnets, each of the permanent magnets having two poles normal to an air gap between the stator and rotor;
- and
- one or more flux adjusters adjacent to one or more magnet poles of the permanent magnets, wherein the one or more flux adjusters are configured to direct magnetic flux density from the stator toward the permanent magnets;
- and
- a power inverter for dispensing at least one current pulse,
- wherein a polarization ratio of magnetization of at least one of the permanent magnets is adjustable during operation of the FMPMSM by application of the at least one current pulse, and
- wherein the at least one permanent magnet possesses a non-linear magnetic hysteresis loop along a portion of which the magnetization of the at least one permanent magnet is adjusted.
6 more elements
Dependencies are inferred from the claim text.