Abetmct A concept of optimal surplus harmonies distribution in selective harmonic elimination PWM teehnique for multilevel inverters is introduced in this paper. There m e several performance indexes that fan he optimized in PWM inverters, e.g., distortion factor, current or voltage total harmonic distortion, or efficiency. Minimisation of magnetic noise is selected as an example here. Several ...

In this paper, we present an implementation of selective harmonic elimination modulation technique in a 27-Level asymmetric multilevel converter. The main issue kind converters is the generation gating patterns to obtain optimized AC voltage waveform. State-of-the art solutions use deep mathematical analysis frequency domain by means Fourier series, but they are mainly applied for two-level or ...

This paper proposed a red deer algorithm (RDA)-based selective harmonic elimination (SHE) method for multilevel inverters (MLIs). To eliminate the desired orders, optimum switching angles of MLI have been calculated using RDA. The applied to 3-phase cascaded H-bridged 11-level inverter. In addition, performance RDA was compared with results methods such as Newton-Raphson (NR) method, LSHADE/EpS...

In this study, it is aimed to eliminate the harmonics selected by selective harmonic elimination (SHE) method in a 7-level cascade multilevel inverter using artificial neural networks (ANNs). A control algorithm has been developed which 3rd and 5th or 7th can be eliminated according selection while adjusting output voltage amplitude of inverter. The required switching angles for SHE are calcula...

The total number of switching pulses permitted in one-quarter the fundamental-cycle an inverter is restricted due to restrictions losses high-power devices. elimination major low-order dominating harmonics using SHEPWM (Selective Harmonic Elimination) suggested this research paper. positive or negative voltage transition at instant where fundamental has greatest slope distinguishes various type...

Abstract --One of the major problems in electric power quality is the harmonic contents. There are several methods of indicating the quantity of harmonic contents. As per IEEE 519 std. these parameters of power quality measurement, are four in number, of which Total Harmonic Distortion is most widely used. In electrical systems, harmonics increase business operating costs by increasing downtime...