Method of dissipating regenerative energy in cargo handling systems
AssigneeGoodrich Corporation
InventorScott Harms
Life of this patent
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Abstract
A cargo handling system is disclosed. In various embodiments, the cargo handling system includes a direct current power bus; a motor connected to the direct current power bus and having a flux reference input; a unit controller connected to the motor and configured to detect a level of regenerative energy on the direct current power bus and to alter the flux reference input in response to the level of regenerative energy.
Claims20
A cargo handling system, comprising:
- a direct current power bus;
- a motor connected to the direct current power bus and having a flux reference input;
- and
- a unit controller connected to the motor and configured to detect a level of regenerative energy on the direct current power bus and to alter the flux reference input in response to the level of regenerative energy.
A system for dissipating regenerative energy on a power bus, comprising:
- a first motor connected to the power bus and having a first flux reference input;
- a first unit controller connected to the first motor and configured to detect a level of regenerative energy on the power bus and to alter the first flux reference input in response to the level of regenerative energy;
- a second motor connected to the power bus and having a second flux reference input;
- and
- a second unit controller connected to the second motor and configured to detect the level of regenerative energy on the power bus and to alter the second flux reference input in response to the level of regenerative energy.
A method for dissipating regenerative energy on a power bus powering one or more of a plurality of motors, comprising:
- determining a voltage difference, the voltage difference representing a level of regenerative energy on the power bus;
- determining a voltage output proportional to the voltage difference;
- modifying a flux reference input based on the voltage output to produce a modified flux reference input;
- and
- adjusting a stator voltage across a stator winding of at least one of the plurality of motors.
Dependencies are inferred from the claim text.