Patent ID: 11936256
Assignee: JACOBI MOTORS LLC
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 15:
16. A method of operating a flux-mnemonic permanent magnet synchronous machine (FMPMSM), the 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 a flux barrier between the poles of each of the permanent magnets; and
a power source controllable by an inverter for dispensing an excitation current and at least one current pulse, the inverter having a microcontroller;
the method comprising:
selecting a desired operational parameter having a first value,
specifying a permissible range for the operational parameter,
controlling a magnetic flux density in the air gap, during operation of the FMPMSM, by adjusting a polarization ratio of magnetization of at least one of the permanent magnets;
applying at least one first current pulse from the inverter to adjust the polarization ratio of magnetization of the at least one permanent magnet during operation of the FMPMSM and to set a magnetic flux linkage between the rotor and stator to achieve the first value of the desired operational parameter,
selecting a second value of the desired operational parameter,
applying at least one second current pulse from the inverter to adjust the magnetic flux linkage to a magnetization state corresponding to the second value,
wherein a difference between the first value and second value is within the specified permissible range for the operational parameter.