Torque shudder protection device and method
Abstract
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. 5 figs.
- Inventors:
- Issue Date:
- Research Org.:
- Ford Motor Company, Detroit, MI (United States)
- OSTI Identifier:
- 445699
- Patent Number(s):
- 5610490
- Application Number:
- PAN: 8-548,064
- Assignee:
- General Electric Co., Schenectady, NY (United States)
- DOE Contract Number:
- AC07-90ID13019
- Resource Type:
- Patent
- Resource Relation:
- Other Information: PBD: 11 Mar 1997
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 42 ENGINEERING NOT INCLUDED IN OTHER CATEGORIES; EQUIPMENT PROTECTION DEVICES; INDUCTION GENERATORS; DESIGN; OPERATION; TORQUE; LIMITING VALUES; CONTROL EQUIPMENT
Citation Formats
King, R D, Doncker, R.W.A.A. De., and Szczesny, P M. Torque shudder protection device and method. United States: N. p., 1997.
Web.
King, R D, Doncker, R.W.A.A. De., & Szczesny, P M. Torque shudder protection device and method. United States.
King, R D, Doncker, R.W.A.A. De., and Szczesny, P M. Tue .
"Torque shudder protection device and method". United States.
@article{osti_445699,
title = {Torque shudder protection device and method},
author = {King, R D and Doncker, R.W.A.A. De. and Szczesny, P M},
abstractNote = {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. 5 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1997},
month = {3}
}