Torque shudder protection device and method
- Schenectady, NY
- Ballston Lake, NY
A torque shudder protection device for an induction machine includes a flux command generator for supplying a steady state flux command and a torque shudder detector for supplying a status including a negative status to indicate a lack of torque shudder and a positive status to indicate a presence of torque shudder. A flux adapter uses the steady state flux command and the status to supply a present flux command identical to the steady state flux command for a negative status and different from the steady state flux command for a positive status. A limiter can receive the present flux command, prevent the present flux command from exceeding a predetermined maximum flux command magnitude, and supply the present flux command to a field oriented controller. After determining a critical electrical excitation frequency at which a torque shudder occurs for the induction machine, a flux adjuster can monitor the electrical excitation frequency of the induction machine and adjust a flux command to prevent the monitored electrical excitation frequency from reaching the critical electrical excitation frequency.
- Research Organization:
- Ford Motor Company, Detroit, MI (United States)
- DOE Contract Number:
- AC07-90ID13019
- Assignee:
- General Electric Company (Schenectady, NY)
- Patent Number(s):
- US 5610490
- OSTI ID:
- 870861
- Country of Publication:
- United States
- Language:
- English
Similar Records
Motor torque compensation of an induction electric motor by adjusting a slip command during periods of supposed change in motor temperature
Motor torque compensation of an induction electric motor by adjusting a slip command during periods of supposed change in motor temperature
Related Subjects
shudder
protection
device
method
induction
machine
flux
command
generator
supplying
steady
detector
status
including
negative
indicate
lack
positive
presence
adapter
supply
identical
limiter
receive
prevent
exceeding
predetermined
maximum
magnitude
field
oriented
controller
determining
critical
electrical
excitation
frequency
occurs
adjuster
monitor
adjust
monitored
reaching
torque shudder
electrical excitation
excitation frequency
flux command
induction machine
protection device
shudder protection
oriented controller
field oriented
/318/