Comparative Analysis of Optimal and Fixed Input DC Sources with Selective Harmonic Elimination Pulse Width Modulation

Memon, Mudasir Ahmed; Mekhilef, Saad; Mubin, Marizan; Siddique, Marif Daula; Dardeer, Mostafa

doi:10.1109/cpere45374.2019.8980153

Cited by 9 publications

(3 citation statements)

References 12 publications

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“…• SHE-PWM or SHM-PWM with constant input DC sources 5 • SHE-PWM or SHM-PWM with variable (optimal) input DC sources [17][18][19] It is obvious that the constant DC voltage sources are easier to realize and there is no need for extra circuits. However, with constant DC sources, it becomes more and more difficult to eliminate or mitigate the intended harmonics in a range of low vales of the modulation index.…”

Section: Literature Reviewmentioning

confidence: 99%

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SHM‐PWM technique in a cascaded H‐bridge multilevel inverter with adjustable DC‐link for wide voltage range applications

Pourdadashnia

Farhadi‐Kangarlu

Tousi

et al. 2022

Circuit Theory & Apps

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In this paper, a new method for achieving high-quality voltage in multilevel inverters is presented. The method is based on the selective harmonic mitigation pulse width modulation (SHM-PWM) technique applied on a cascaded Hbridge multilevel inverter (CHBMLI), which employs a variable DC-link voltage to reduce the amount of the total harmonic distortion (THD) in the output waveform. The variable DC sources in a CHBMLI can increase the modulation index to an acceptable range in the low output voltage values and also increase the number of harmonics to be eliminated in the SHM technique due to increasing the number of voltage levels. In the proposed method, the optimal switching angles are calculated by the particle swarm optimization (PSO) algorithm and the switching angles are stored in lookup tables (LUTs). Implementing the proposed method allows the CHB inverter to improve the performance in producing a high-quality voltage compared with conventional methods. As an applicable example, a single-phase CHBMLI, fed by two isolated DC sources, is examined in this paper. The analysis presented in this paper shows a significant improvement in the quality of the output voltage, especially for low output voltage conditions. The simulation and experimental results are presented to confirm the proposed approach.

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Section: Literature Reviewmentioning

confidence: 99%

“…The papers that address the SHE‐PWM or SHM‐PWM can be divided into two groups: SHE‐PWM or SHM‐PWM with constant input DC sources 5 SHE‐PWM or SHM‐PWM with variable (optimal) input DC sources 17–19 …”

Section: Introductionmentioning

confidence: 99%

SHM‐PWM technique in a cascaded H‐bridge multilevel inverter with adjustable DC‐link for wide voltage range applications

Pourdadashnia

Farhadi‐Kangarlu

Tousi

et al. 2022

Circuit Theory & Apps

View full text Add to dashboard Cite

show abstract

“…In HSF-PWM, the number of turn ON and OFF is much higher than FSF-PWM, resulting in the shifting of harmonics at a higher frequency but with higher switching losses. Sinusoidal PWM and space vector PWM are some examples of HSF-PWM [2,[25][26][27].…”

Section: Shepwm Techniquementioning

confidence: 99%

A New Configurable Topology for Multilevel Inverter With Reduced Switching Components

et al. 2020

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Multilevel inverters (MLI) are now becoming an important element for medium-voltage highpower applications. A low switch count MLIs are more popular due to their high efficiency, low cost, and easy control for the output having a higher number of levels. A new MLI topology for single-phase applications based on switched dc voltage source with reduced switch count is proposed in the paper. The presented topology is developed with the constraints of lesser blocking voltage of the switches with a higher number of levels at the output using a lower number of components. The proposed topology can also work in the symmetrical and asymmetrical configuration. Selective harmonic elimination (SHE) technique is applied to synthesize the staircase output voltages with eliminations of lower order harmonics by optimized computation of angles for switching operation. The comparative studies with the MLIs recommended in recent times show the importance of the proposed MLI structure in terms of reduced switch count and lower voltage stresses across switches in both asymmetrical and symmetrical configurations. The experimental results are presented to confirm the performance of the proposed topology.

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Comparative investigations on different types of inductors in single-phase inverter

Aihsan

Yusof

Rahim

et al. 2021

J. Phys.: Conf. Ser.

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This article organized in two sections where it compares the performance of single-phase inverters using various types of inductors with differences modulation technique of pulse width modulation (PWM). Not all inductors perform the same function, even the inductance value is the same. The study will investigate the capability of each inductor on its performance to convert the unfiltered AC voltage into filtered sinusoidal AC voltage. The drum core and toroidal core inductors were used in this investigation. For both inductors, the performance will be analyzed based on Bipolar and Unipolar switching schemes in a single unit H-bridge circuit. The validation of results are through experimental assessment only and it will be evaluating the shape of sinusoidal AC voltage and the content of total harmonics distortion in the AC voltage for both inductors.

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Comparative Analysis of Optimal and Fixed Input DC Sources with Selective Harmonic Elimination Pulse Width Modulation

Cited by 9 publications

References 12 publications

SHM‐PWM technique in a cascaded H‐bridge multilevel inverter with adjustable DC‐link for wide voltage range applications

SHM‐PWM technique in a cascaded H‐bridge multilevel inverter with adjustable DC‐link for wide voltage range applications

A New Configurable Topology for Multilevel Inverter With Reduced Switching Components

Comparative investigations on different types of inductors in single-phase inverter

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