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US 12,304,318 B2Granted
Motor speed measurement systems
AssigneeHamilton Sundstrand Corporation
InventorsNageswara Rao Kalluri, Pravinsharma Kaliyannan Eswaran, Sridhar Katakam, Surendra Somasekhar Valleru, Ashish Vijay
Life of this patent
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Abstract
A motor speed monitoring system can include a monitor channel having an input configured to connect to an inverter output of an inverter to receive motor command signals from the inverter, and an intelligence module configured to determine a motor speed based on the motor power signals from the inverter.
Claims20
A motor speed monitoring system, comprising:
- a monitor channel comprising:
- an input configured to connect to an inverter output of an inverter to receive motor power signals from the inverter;
- and
- an intelligence module configured to determine a motor speed based on the motor power signals from the inverter;
- wherein the inverter is configured to be controlled by inputs provided over a control channel;
- and
- wherein the monitor channel is independent of the control channel such that the monitor channel does not receive the inputs from the control channel.
4 more elements
A line replaceable unit (LRU), comprising:
- an inverter configured to output motor power signals to a motor;
- a control channel configured to control the inverter to output the motor power signals, the control channel configured to receive resolver output from a resolver associated with the motor to control the inverter;
- and
- a monitor channel comprising:
- an input configured to connect to an inverter output of the inverter to receive the motor power signals from the inverter;
- and
- an intelligence module configured to determine a motor speed based on the motor power signals from the inverter.
4 more elements
A motor system, comprising:
- an electric motor;
- a line replaceable unit (LRU) operatively connected to the electric motor, the LRU comprising:
- an inverter configured to output motor power signals to the electric motor;
- a control channel configured to control the inverter to output the motor power signals, the control channel configured to receive resolver output from a resolver associated with the electric motor to control the inverter;
- and
- a monitor channel comprising:
- an input configured to connect to an inverter output of the inverter to receive the motor power signals from the inverter;
- and
- an intelligence module configured to determine a motor speed based on the motor power signals from the inverter;
- and
- a system control module operatively connected to the monitor channel to receive the motor speed from the intelligence module for at least one of:
- safety monitoring, determining a health of the LRU, or determining a health of the electric motor.
9 more elements
Dependencies are inferred from the claim text.