This paper presents different types of bipolar Pulse Width Modulation (PWM) strategies for the chosen Cascaded MultiLevel Inverter (CMLI). The main purpose of MLI is to use power semiconductor devices of lower voltage ratings to realize high voltage levels at inverter output. Due to their ability to obtain refined output voltage waveforms, reduced Total Harmonic Distortion (THD) and reduced EMI...

This paper presents the design and analysis of a high efficiency, PWM (Pulse-Width-Modulation) Buck converters for mobile phone applications. The steady-state and average-value models for the proposed converter are developed and simulated. A practical design approach which aims at systematizing the procedure for the selection of the control parameters is introduced. The switching losses are red...

A voltage source inverter is commonly used to supply a three-phase induction motor with variable frequency and variable voltage for variable speed applications. A suitable pulse width modulation (PWM) technique is employed to obtain the required output voltage in the line side of the inverter. The different methods for PWM generation can be broadly classified into Triangle comparison based PWM ...

The work in this paper presents the performance analysis of reduced component count converter which is 5-Level Active Neutral Point Converter (5LANPC). This 5-level has been configured by stacking traditional 3-Level with Flying Capacitor converter. Two types control algorithms were considered and compared to explore 5LANPC. first algorithm was based on Phase-Disposition-Pulse Width Modulation ...

In this paper comparison of Selective Harmonic Elimination (SHE) method with different Pulse Width Modulation (PWM) technique which are used as gate pulse for firing the IGBT‟s. Higher order harmonics are easily eliminated by selecting a proper tuned value filters but lower order harmonics such as 3rd, 5th, 7th, and 9th are not easily eliminated. This paper includes NewtonRapson method with ran...

Multilevel inverters have become more popular over the years in high power electric applications without use of a transformer and with promise of less disturbance and reduced harmonic distortion. This work proposes three phase five level Diode Clamped Multilevel Inverter (DCMLI) to simulate various modulating techniques for induction motor load. These Pulse Width Modulation (PWM) techniques inc...

We have proposed a novel driving concept for TFT-OLEDs, pulse-width modulation with current uniformization. This driving method can simultaneously achieve precise grayscale and exceedingly improve luminance uniformity. Lately, we succeeded to reduce the number of TFTs in a pixel circuit from nine to seven. Especially in this paper, its working and tolerance against characteristic deviations of ...

Original scientific paper Nowadays, the computer control has to be taken into account in any field of study. Due to the advantage of its binary system, it can very quickly control the signals from devices. This paper is focused on the analysis of some studies carried out on the PWM (Pulse Width Modulation) technologies. The engines used nowadays are provided with an electronic injection system....

One of the most common issues in inverters are open-circuit faults (OPF). In this scenario, a proper fault-tolerant technique must be used to improve motor performance. Although basic modulation techniques normally preferred, paper proposes discontinuous pulse-width algorithm (HD-PWM) operate five-phase under single OPF. particular, loss equalization between remaining switches after fault occur...