A new topology -Reversing Voltage (RV) - for multi level inverters

Najafi, Ehsan; Yatim, A.H.M.; Samosir, Ahmad Saudi

doi:10.1109/pecon.2008.4762547

Cited by 33 publications

(16 citation statements)

References 12 publications

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“…2.1. In this figure, the left side circuit generates the required output level is called output level generator and the right side circuit is called full bridge converter which reverses the voltage direction when the voltage polarity requires to be changed for negative polarity [8]. The proposed RV topology for 9-level inverter requires twelve semiconductor switches and four isolated dc sources shown in Fig 2.1 [10] which separates output voltage in two parts.…”

Section: Proposed Topologymentioning

confidence: 99%

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A three-phase 9-level inverter with reduced switching devices for different PWM techniques

Yadav

Bansal

Saxena

2014

2014 6th IEEE Power India International Conference (PIICON)

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Multilevel inverter is a power electronic device and that is become more popular over the years in high-power high-voltage applications. Multilevel inverters have unique structure which makes it possible to reach high voltages with less harmonic content and lower EMI. The harmonic content of the output voltage waveform decreases as the number of output voltage increases. This paper proposes a 9-level multi-level inverter with Reversing Voltage topology. This proposed multilevel inverter topology here is implemented in single-phase and three-phase with different pulse width modulation (PWM) techniques, which requires less number of components, and gate drive circuit as compared to other multilevel inverters. A multicarrier PWM technique is used for multilevel inverter topology to generate 9-level output phase voltage. Finally simulation results of a 9-level multi-level inverter topology are carried out using MATLAB/simulink R2013a software version.

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Section: Proposed Topologymentioning

confidence: 99%

“…The proposed multilevel inverter topology [8] here is implemented in single-phase 978-1-4799-6042-2/14/$31.00 ©2014 IEEE and three-phase with different PWM techniques. The pulsewidth modulation (PWM) control [9] is the most efficient technique of controlling output voltage within the inverters.…”

Section: Introductionmentioning

confidence: 99%

A three-phase 9-level inverter with reduced switching devices for different PWM techniques

Yadav

Bansal

Saxena

2014

2014 6th IEEE Power India International Conference (PIICON)

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“…Another disadvantage of multilevel power converters is that the small voltage steps are typically produced by isolated voltage sources or a bank of series capacitors. Isolated voltage sources may not always be readily available and series capacitors require voltage balance [19].…”

Section: Introductionmentioning

confidence: 99%

Cascaded half-full-bridge PWM multilevel inverter configuration

Odeh¹

2016

Turk J Elec Eng & Comp Sci

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This paper presents a single-phase, cascaded half-full-bridge PWM multilevel inverter topology. It is made up of a main inverting H-bridge legs and level-clamping half-bridge circuits, each having its own dc source. The singlecarrier, multilevel PWM scheme is employed to generate gating signals for the power switches. The modulation scheme is hybridized to enable the output voltage of the proposed inverter configuration to inherit the features of switchingloss reduction from fundamental PWM and good harmonic performance from multiple sinusoidal PWM. Moreover, a simple base PWM circulation scheme is also introduced in this work to obtain a resultant sequential switching hybrid PWM (SSHPWM) circulation that balances power dissipation among the four power switches of the main H-bridge module. Operational principles with switching functions are given. For a modulation index of 0.9, the proposed inverter configuration was subjected to an R-L load and the respective numbers of output voltage level were synthesized. FFT analyses of the output voltage waveforms were carried out and the corresponding THD value of 13.16% was obtained.To verify the performance of the proposed inverter architecture, simulations and experiments were carried out on a 2.95 kW rated prototype of the proposed inverter for an R-L load and adequate results were obtained.

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“…The multilevel cascaded H-bridge (CHB) inverter shown in Figure 2.1 is one of the popular inverter topologies for high-power applications due to its high voltage operating capability, low dv/dt with reduced total harmonic distortion (THD) and modular structure for reduced manufacturing cost [5]. The conventional modulation schemes for the CHB multi level inverter including carrier based sinusoidal modulations with phase opposition disposition techniques (PODPWM) [6,7]. The level-shifted modulation schemes have a good THD profile, but suffer from unbalanced power distribution [8][9][10], whereas the phase shifted schemes are simpler but produce higher THD [8] …”

Section: Introductionmentioning

confidence: 99%