Two-mode overmodulation in two-level voltage source inverter using principle control between limit trajectories

A Neural Network Based Space Vector PWM for Permanent Magnet Synchronous Motor Drive

“…The SVM theory has been well-discussed in the many literatures [3,7,8], a number of authors have described its operation in the overmodulation region. The principles are briefly reviewed here adding analysis in overmodulation region with the goal of its ANN implementation.…”

Advanced Static Over-modulation Scheme using Offset Voltages Injection for Simple Implementation and Less Harmonics

“…This paper proposes a new static OVM that retains the linearity of the output voltage, as well as reduces harmonics. Especially in the proposed scheme, the static OVM is realized by offset voltage adding method instead of through calculation of switching times done in conventional methods [4][5][6][7][8][9][10][11][12].…”

“…In [11], switching times were calculated based on the valid voltage vector moving the path that exists inside and outside of the hexagon. This technique did not need a lookup table, but required a complex procedure for calculating switching times.…”

“…This technique did not need a lookup table, but required a complex procedure for calculating switching times. It should be emphasized that most conventional methods [4][5][6][7][8][9][10][11] have realized the SVPWM by calculation of switching time for each power switch except [12].…”

“…In conventional methods, the phase-angle reference is commended in a manner that jumping into predetermined location after staying a vertex vector in the OVM region II [4][5][6][7][8][9][10][11][12]. Unlike conventional methods, to reduce THD the voltage vector moves not just in one-step but with several steps toward predetermined location in this proposed scheme.…”