公开(公告)号：US11637516B2

公开(公告)日：2023-04-25

申请号：US17379450

申请日：2021-07-19

Applicant: Raytheon Company

Inventor： Andrew C. Walecka ,  Andrew Thompson

IPC: H02P21/10

Abstract: A system and method uses field-oriented control (FOC) of a multi-phase motor to prevent thermal runaway of the thermal battery that powers the motor. An offset is applied to the flux command signal to ensure that the power level drawn from the thermal battery exceeds a minimum power level to avoid thermal runaway. This is done without any additional hardware, hence the reduced cost, inefficiencies and packaging volume of such hardware. In different modes, the offset is applied to prevent thermal runaway regardless of torque production, when the system is in failure and torque production is zero, for variable and intermittent periods when torque production is zero, and during normal operation to augment power drawn to produce torque.

公开(公告)号：US20230013620A1

公开(公告)日：2023-01-19

申请号：US17379450

申请日：2021-07-19

Applicant: Raytheon Company

Inventor： Andrew C. Walecka ,  Andrew Thompson

IPC: H02P21/10

Abstract: A system and method uses field-oriented control (FOC) of a multi-phase motor to prevent thermal runaway of the thermal battery that powers the motor. An offset is applied to the flux command signal to ensure that the power level drawn from the thermal battery exceeds a minimum power level to avoid thermal runaway. This is done without any additional hardware, hence the reduced cost, inefficiencies and packaging volume of such hardware. In different modes, the offset is applied to prevent thermal runaway regardless of torque production, when the system is in failure and torque production is zero, for variable and intermittent periods when torque production is zero, and during normal operation to augment power drawn to produce torque.