	US 12,015,314 B2
	Control and drive of a rotating machine with an inner and an outer stator
Minos Beniakar, Athens (GR); and Luca Peretti, Järfälla (SE)
Assigned to ABB Schweiz AG, Baden (CH)
Appl. No. 16/979,395
Filed by ABB Schweiz AG, Baden (CH)
PCT Filed Mar. 6, 2019, PCT No. PCT/EP2019/055497 § 371(c)(1), (2) Date Sep. 9, 2020, PCT Pub. No. WO2019/174981, PCT Pub. Date Sep. 19, 2019.
Claims priority of application No. 18161190 (EP), filed on Mar. 12, 2018.
Prior Publication US 2021/0075302 A1, Mar. 11, 2021
Int. Cl. H02P 1/00 (2006.01); H02K 11/33 (2016.01); H02K 16/04 (2006.01); H02P 3/00 (2006.01); H02P 7/00 (2016.01)

CPC H02K 16/04 (2013.01) [H02K 11/33 (2016.01)]

15 Claims

1. A method for continuous operation of a rotating machine, the method being performed in a rotating machine having an inner stator and an outer stator, comprising:

setting a rotating machine reference operational value for the whole rotating machine;

obtaining operational parameters for the inner stator and for the outer stator, wherein the operational parameters include magnetic cross-coupling between the inner and outer stators;

determining an inner stator reference operational value for the inner stator and an outer stator reference operational value for the outer stator based on the set rotating machine reference operational value for the whole rotating machine and the obtained operational parameters; and

driving the rotating machine based on the determined inner stator reference operational value for the inner stator and on the determined outer stator reference operational value for the outer stator, wherein the determined inner stator reference operational value for the inner stator differs from the determined outer stator reference operational value for the outer stator.