Motor flying start using field weakening control
AssigneeRockwell Automation Technologies, Inc.
InventorBing Li
Life of this patent
Estimating the term…
Abstract
A method for flying start control of a motor, a computer readable medium, and a power conversion system having an inverter and a controller configured by computer executable instructions in a memory to perform flying start of a rotating motor by field weakening control to control the motor responsive to the motor speed exceeding the rated speed or other non-zero threshold at startup of the power conversion system. The method includes measuring a motor speed of a motor, responsive to startup of a power conversion system, and performing a flying start operation using field weakening control to control the motor responsive to the motor speed exceeding a non-zero threshold at startup of the power conversion system.
Claims20
A power conversion system, comprising:
- an inverter configured to convert DC power to AC power to drive a motor;
- and
- a controller, configured to operate the inverter to perform a flying start operation using field weakening control responsive to a motor speed of the motor exceeding a non-zero threshold at startup of the power conversion system.
A method, comprising:
- measuring a motor speed of a motor, responsive to startup of a power conversion system;
- and
- performing a flying start operation using field weakening control to control the motor responsive to the motor speed exceeding a non-zero threshold at startup of the power conversion system.
A non-transitory computer readable medium having computer executable instructions which, when executed by a processor, cause the processor to:
- measure a motor speed of a motor, responsive to startup of a power conversion system;
- and
- perform a flying start operation using field weakening control to control the motor responsive to the motor speed exceeding a non-zero threshold at startup of the power conversion system.
Dependencies are inferred from the claim text.