Simulation of a regular sampled pulsewidth modulation (PWM) technique for a multilevel inverter

Abstract

Abs(rQct--Slmulation of a multilevel Inverter for hip,h powrr appllcnllons employing a I'WM unll)olar symmetrical regular �amJlled technique based 011 n single cnrrler llIultllevel mod ulation strategy Is presented In this pnper. The eq uatiolls related to this technique nrc uscd to design the gate slgnnl generator blocks using Matlab's Simulink. These blocks generate the gate Signals for each of the multilevel inverter power devices and can later be com l lilcd and downloaded to a dSPACE DSP controller board for real time digital Imillemcntation. The gate signal generator blocks arc tested for various values of modulation index. The results of the simulation study nrc shown In the form of the PWM waveforms of the multilevel Inverter modules as well as the gate signals for its power devIces for comparison purposes.

Developing a novel sinusoidal pulse width modulation (SPWM) technique to eliminate side band harmonics

“…The performance of the simulation is checked with DSP implementation. The THD ratios of both voltage and current of the implemented VSI provided better results according to previous studies [15][16][17][18][19].…”

“…Although there are numerous studies performed in this subject, some of them are especially compared in this paper since existing the similarity between them [15][16][17][18][19][39][40][41]. It is intended to decrease the THD ratio by arranging dead-band times in switching orders in [15], as done in [16][17][18][19].…”

Power Quality Analysis for Modular Structured Multilevel Inverter with Bipolar Variable Amplitude Multicarrier Pulse Width Modulation Techniques

“…Multi Carrier PWM is an exclusive control strategy for multilevel inverters and has further classifications as discussed below. Several multicarrier techniques have been developed to reduce the distortion of outputs in multilevel inverters based on the classical SPWM [7,8,10,11,15,16,20,21] with triangular carriers. The constant switching frequency pulse width modulation technique is most popular and is a very simple switching scheme.…”

“…The most popular control technique for traditional inverters is the sinusoidal or "sub harmonic" natural pulse width modulation method. Its popularity is due to its simplicity and to the good results it guarantees in all the operating conditions [6][7][8]. Analysis and comparison of multicarrier PWM schemes applied in H-bridge cascaded multilevel inverter are presented in [9][10].…”

Topological Analysis of Multilevel Inverter for Photovoltaic System

“…This is due to two-level limitation when handling high voltage and power. In additions, the two level inverter also produces a quite numbers of higherorder harmonics which is considered as a main drawback [10] …”