In this paper, we present the study, modelling and simulation of the duty
cycle modulation (DCM) based on SVPWM control technique using Matlab/Simulink software. It is one of the
most advanced control techniques of space vector modulation (SVM), which can be
used for controlling static converters or for controlling electrical machines
to achieve better dynamic performance. DCSVM is a control technique that
generates control signals for the two-level voltage converter as well as for
the intermediate times. The main advantage of this control technique is the
reduction of the number of calculations, especially for the trigonometric
functions and the generation of the reference voltage. In order to reduce the
computational effort, we have designed a DCSVM controller that is able to
faithfully reproduce the same vectors and
output quantities as a classical SVM. In order to test the functionality and
validity of the DCSVM control, we have developed different simulations that
result in a total harmonic distortion (THD) of the voltage and current of
41.19% and 15.19% respectively with fundamental values of 61.51 V for the
voltage and 2.80 A for the current; in contrast to the SVM which gives 47.27 V
for the voltage and 2.01 A for the current with THDs of 77.16% for the voltage
and 16.00% for the current. This results in an improvement in the distortion
rate of around 25.5%. The results obtained are very satisfactory. The DCSVM is
a real competitor to the SVM and its various variants.
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