Extended over modulation zone three-dimensional SVPWM for three-level neutral-point-clamped

Abstract

In the current era, pulse width modulation (PWM) techniques for multi-level inverters (MLIs) are widely for electrical drivers and renewable energy powering applications. Particularly, space vector PWM (SVPWM) takes a lot of interest as it has direct control in capacities with control variables, which deliver the straightforward MLIs switching vectors. Viewing the industrial induction drives, the three-phase neutral point MLIs families are the most preferred ones. These drives need wide speed-power characterizes. Hence to the overmodulation (OVM) boundary operation is recommended. However, the extended SVM overmodulation operation uses large mathematical calculations which need a higher-end digital platform to implement. The near state 3 dimensional (SD) SVPWM is an interesting switching method since it has a fast mathematical framework. The OVM based 3D SVPWM is innovative and not attempted. Hence, the paper proposes the new 3D SVPWM in the OVM region, which helps to increase the MLI fundamental voltage with minimal computations process for three-level MLI. The proposed method is not only independent with a number of inverter levels; it correspondingly does not need lookup-tables (LUTs) for the real α-β coordinate. The proposed 3D is verified through simulation and feasibility is demonstrated through experimentation.