DocumentCode :
2584215
Title :
Space vector modulation extended to voltage source converters with multiple legs in parallel
Author :
Jaskulski, Igor W. ; Gabe, Ivan J. ; da Costa, Jean P. ; Stefanello, Márcio ; Pinheiro, Humberto
Author_Institution :
Univ. Fed. de Santa Maria, Santa Maria
fYear :
2007
fDate :
2-5 Sept. 2007
Firstpage :
1
Lastpage :
10
Abstract :
This paper extends the space vector (SV) modulation to Voltage Source Converters (VSC) with multiple legs in parallel. Multiple legs voltage source converters are strong candidates for low voltage high power applications, such as wind power systems where the converter has to handle high currents. The main advantages of the proposed modulation are: (i) minimization of the total harmonic distortion (THD) of the output current or reduction the filter size; (ii) decoupling the output current control loops from the current sharing control loops. In addition the well-known features of the SV modulation such as the full utilization of the DC bus voltage and the possibility of minimization of switching losses can also be achieved. Finally, experimental results from a three phase multiple legs converter are presented to support the analysis carried out as well as to demonstrate the performance of the proposed SV modulation. Furthermore, experimental results are also presented to compare the proposed SV modulation with a conventional PWM with triangular phase-shift.
Keywords :
electric current control; harmonic distortion; harmonics suppression; switching convertors; DC bus voltage utilization; current sharing control loops; filter size reduction; low voltage high power applications; multiple legs voltage source converters; output current control loops; space vector modulation; switching losses minimization; three phase multiple legs converter; total harmonic distortion minimization; wind power systems; Converters; Current control; Leg; Low voltage; Phase modulation; Power conversion; Power harmonic filters; Pulse width modulation; Total harmonic distortion; Wind energy; Converters with Parallel Legs; Modulation; Parallel Converters; Space Vector; Wind Turbines Systems;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Power Electronics and Applications, 2007 European Conference on
Conference_Location :
Aalborg
Print_ISBN :
978-92-75815-10-8
Electronic_ISBN :
978-92-75815-10-8
Type :
conf
DOI :
10.1109/EPE.2007.4417577
Filename :
4417577
Link To Document :
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