Comparative Analysis of Different Modulation Techniques for Three Level Three Phase T-type NPC Inverter

Constrained Modulated Model Predictive Control for a Three-Phase Three-Level Voltage Source Inverter

“…. Therefore, if one of the voltages, on its own, makes the inductor current surpass the maximum value, I fmax , the whole region should be discarded even if the resulting current meets the constraint after applying the linear combination of these three switching vectors (11).…”

“…Get d by ( 21), (22), and (23) Determine viαβ, k+1 (11). addition, the inductor constraint, I fmax , divides the optimal region into two areas, green and red.…”

“…On the one hand, there are several modulation techniques, most of them based on the conventional ones, such as Pulse Width Modulation (PWM), Space Vector Modulation (SVM), and Selective Harmonic Elimination (SHE) [1], [10]. Note that SVM brings about a superior performance for T-NPC inverters due to its better use of the DC voltage [11]. For instance, the PWM technique presents a maximum voltage equal to half of the DC-link voltage, (V DC ), whereas the SVM technique gives a maximum of 0.577V DC [12].…”

Two-level inverter and three-level neutral point diode clamped inverter for traction applications: a comparative analysis study

“…The most popular pulse width modulation (PWM) techniques are multi-carrier sine pulse width modulation (SPWM) [9]- [11], Space Vector Pulse width Modulation (SVPWM) [12]- [16], and selective harmonic elimination PWM (SHE) [17]- [19]. The comparison between different techniques is made based on the output line voltage THD, the common-mode voltage, and the utilization of DC-link voltage [20], [21].…”