Patent ID: 11926221
Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Field: Transport (Mechanical engineering)
Classification: CPC B  H  Y | IPC B  H

Claim 0:
1. A method for controlling transient operation of a variable flux machine (VFM), the method comprising:
during a shunt angle transition of the VFM, receiving a commanded shunt angle of the VFM and a measured shunt angle of the VFM during operation of the VFM in a predetermined control region, the shunt angle transition occurring while shunting hardware elements embedded within the VFM to impart a change in direction of magnetic flux transition from a first position to a second position;
calculating, via a controller, a d-axis delta current (ΔId) term and a q-axis delta current (ΔIq) term required to maintain an output torque level of the VFM through a duration of the shunt angle transition; and
applying the required ΔId term and the required ΔId term as feed-forward terms to respectively adjust a d-axis current (Id) term and a q-axis current (Iq) term from a respective lookup table, and to thereby maintain the output torque level of the VFM during the shunt angle transition.