DocumentCode :
2247726
Title :
Inner current loop for large voltage low switching frequency
Author :
Lindberg, A. ; Lindberg, L.
Author_Institution :
R. Inst. of Technol., Stockholm, Sweden
fYear :
1994
fDate :
26-28 Oct 1994
Firstpage :
217
Lastpage :
222
Abstract :
In high power applications, i.e. HVDC and SVC, the coupling between rating, performance and utilization is of highest interest. Therefore, the performance of inner current loop control for large voltage source power converters is studied with respect to the ability to limit the power converter current during unsymmetrical conditions in the supplying AC network. A comparison is made between if the inner current loop is implemented in either the αβ-plane or the rotating dq-plane. The influence of an extra time delay using digital control and the pulse number (sample period) are also evaluated. Results are presented from dynamical studies, carried out with both computer simulations and real time analog simulations with a digital control system. The simulations verifies the implemented inner current loop ability to limit the power converter current during load changes and disturbances in the feeding AC network
Keywords :
control system analysis computing; digital control; digital simulation; electric current control; power convertors; power engineering computing; power system harmonics; real-time systems; AC power system; HVDC; SVC; computer simulation; current control; digital control; disturbances; inner current loop control; load changes; performance; rating; real time; switching frequency; time delay; utilization; voltage source power converters;
fLanguage :
English
Publisher :
iet
Conference_Titel :
Power Electronics and Variable-Speed Drives, 1994. Fifth International Conference on
Conference_Location :
London
Type :
conf
DOI :
10.1049/cp:19940967
Filename :
341602
Link To Document :
بازگشت