Hamilton Sundstrand Corporation

Anil Prasad Josyula

Ashish Vijay

Harish Venkatesha

Somasekhar Valleru

David Frederick Brookes

Sangameswaran Kamanathan

Vipul Kohli

A hoist application system is provided. The hoist application system includes a motor drive unit, which is receptive of a final duty command and which drives a motor in accordance with the final duty command, a closed-loop control unit configured to generate a closed-loop duty command, an open-loop control unit configured to generate an open-loop duty command and a switch logic unit. The switch logic unit is receptive of direct current (DC) system information, the closed-loop duty command and the open-loop duty command, and is configured to generate the final duty command from one of the closed-loop duty command and the open-loop duty command based on the DC system information.

Current limit strategy for hoist application

A motor temperature control system for an electric aircraft is provided. The motor temperature control system includes an electric motor, circuitry and a thermoelectric generator (TEG). The TEG is disposed in thermal communication with the electric motor. The TEG is electrically coupled to the circuitry such that heat generated by the electric motor is converted by the TEG to electrical energy that generates a voltage drop across the circuitry.

Sensor-less temperature monitoring

System and methods for motor drive electronics are provided. Aspects include receiving, by a controller on a motor driver electronics (MDE) component, voltage data associated with a thermoelectric generator, wherein the MDE component is configured to operate an electric motor, and wherein the MDE component comprises a power card including one or more components, determining a temperature reading based on the voltage data, enacting an action associated with the MDE component based at least in part on the temperature reading.

Motor drive electronics using thermoelectric material

Provided are embodiments for a system including an adaptive controller, wherein the system includes a hydraulic actuator including a fluid medium, and a sensor that is disposed on the hydraulic actuator, wherein the sensor is configured to obtain sensor data of the actuator. The system also includes a processor configured to calculate an ultrasonic velocity in the fluid medium using the sensor data, wherein the processor is further configured to determine a temperature of the fluid medium based at least in part on the calculated velocity, and a controller coupled to the actuator, wherein the controller is configured to control the actuator based at least in part on the calculated velocity and determined temperature. Also provided are embodiments for a method for operating the adaptive controller.

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Andra Pradesh, India

Anil Prasad Josyula