公开(公告)号：US12244211B2

公开(公告)日：2025-03-04

申请号：US17931012

申请日：2022-09-09

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Jared Lee ,  Robert Seungmo Lee ,  Jeffrey R Kelly ,  Addison T Solak

IPC: H02K9/19 ,  H02K1/32 ,  H02K9/193 ,  B60K1/00 ,  B60K11/02

Abstract: Systems and methods provide active control of rotor cooling. In a number of embodiments, a system includes a controller coupled with an electric machine having a rotor. The controller evaluates parameters related to the electric machine for flow rate requirements of the rotor, where the flow rate requirements relate to cooling of the rotor. A flow rate of a fluid for cooling the rotor is computed, where the flow rate is based on a composite of the flow rate requirements. A control valve signal is delivered to set a control valve to supply the flow rate to the rotor based on the parameters.