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.

公开(公告)号：US20240339847A1

公开(公告)日：2024-10-10

申请号：US18131171

申请日：2023-04-05

Applicant: Raytheon Company

Inventor： Stephen John Fedigan ,  Mahitha Velagapudi ,  Grant Allen Sweer ,  Derek L. Budisalich ,  Eric C. Maugans ,  Andrew Thompson

IPC: H02J7/00 ,  H01M6/36 ,  H01M6/50

CPC classification number: H02J7/0025 ,  H01M6/36 ,  H01M6/5011 ,  H01M6/5033 ,  H01M6/5038 ,  H01M6/5044 ,  H02J7/0047

Abstract: A power management unit architecture including a set of batteries connected to a load via a bus; a controller in operative communication with the batteries; a telemetry unit in operative communication with the controller and the batteries; at least one power switch in operative communication with the controller, the batteries and the bus; a squib unit operatively connected to the batteries; wherein the controller is configured to pull a battery current from a first battery and drive the first battery current into a second battery responsive to a predetermined current.