Selective Harmonic Elimination PWM for Cascaded H-bridge Multilevel Inverter with Wide Output Voltage Range Using PSO Algorithm

Multilevel inverters are a good choice for medium and low power applications. Multilevel inverters have found a wide place in the market for their good power quality output. This paper proposes a new Envelope with T type Novel Multilevel inverter with unequal sources and with reduced switch count. Working of the circuit is explained. Firing angle calculations are done using simple nested looping technique and later Genetic Algorithm is used to obtain optimum firing angles for Selective Harmonic Elimination technique and improve the THD of the output voltage. Comparison is made between different types of inverters. The proposed inverter can be used for speed control of drives

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A New Method of Selective Harmonic Elimination PWM for H-Bridge Cascaded Multilevel Inverter

International Journal of Engineering and Advanced Technology - Regular Issue ◽

10.35940/ijeat.a1460.109119 ◽

2019 ◽

Vol 9 (1) ◽

pp. 6168-6175

Keyword(s):

Degrees Of Freedom ◽

Pulse Width Modulation ◽

Harmonic Distortion ◽

Multilevel Inverter ◽

Voltage Range ◽

Harmonic Elimination ◽

Selective Harmonic Elimination ◽

Cascaded Multilevel Inverter ◽

Operating Points

The quality of power of the cascaded H-bridge multilevel inverter is affected due to harmonics. In this paper, a Selective Harmonic Elimination Pulse Width Modulation (SHE-PWM) method including controllable DC link voltage is introduced for the multilevel inverter. Novel mathematical modeling of SHE-PWM is established concerning the DC link voltage. Compared to ordinary selective harmonic elimination, the proposed method has an increased number of degrees of freedom because of its variable DC link voltage. On the other hand, the selective harmonic elimination utilizes constant DC link voltage. In the proposed scheme, the nonlinear equations are solved only once in the entire voltage range. As a result, the computational burden will decrease. Also, the Total Harmonic Distortion (THD) of the output voltage remains constant for various values of the operating points. The simulation is performed using Matlab Simulink and the comparison is performed with the conventional PWM method. It is intended that the proposed SHE-PWM based cascaded H-bridge multilevel inverter provides better performance in terms of lower-order harmonics and less THD compares to conventional PWM method.

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Particle swarm optimisation (PSO) algorithm with reduced numberof switches in multilevel inverter (MLI)

Indonesian Journal of Electrical Engineering and Computer Science ◽

10.11591/ijeecs.v14.i3.pp1114-1124 ◽

2019 ◽

Vol 14 (3) ◽

pp. 1114 ◽

Cited By ~ 1

Author(s):

Mohammed Rasheed ◽

Rosli Omar ◽

Marizan Sulaiman ◽

Wahidah Abd Halim

Keyword(s):

Pulse Width Modulation ◽

Harmonic Distortion ◽

Particle Swarm ◽

Pso Algorithm ◽

Multilevel Inverter ◽

Harmonic Elimination ◽

Paper Cover ◽

Three Phase ◽

Selective Harmonic Elimination ◽

Cover Design

<p>In this work, a three-phase of multilevel inverter (MLI) with reduced number of switches components based on Newton Raphson (NR) and Particle Swarm Optimization (PSO) techniques were presented. The Selective Harmonic Elimination Pulse-Width Modulation (SHE-PWM) is a powerful technique for harmonic minimization in multilevel inverter within allowable limits. NR and PSO techniques were used to determine the switching angles by solving the non-linear equation's analysis of the output voltage waveform of the modified CHB-MLI in order to control the fundamental component. A comparison has been made between NR and PSO techniques related to optimization in order minimize harmonic distortion. The main aims of this paper cover design, modeling, construction the modified topology of the CHB-MLI for a three phase five levels inverter. The controllers based on NR and PSO were applied to the modified multilevel inverter. The inverter offers much less THD using PSO scheme compared with the NR scheme. The performance of the proposed controllers based on NR and PSO techniques done by using MATLAB/Simulink of results are compared.</p>

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A modified cascaded h-bridge multilevel inverter based on particle swarm optimisation (PSO) technique

Indonesian Journal of Electrical Engineering and Computer Science ◽

10.11591/ijeecs.v16.i1.pp41-51 ◽

2019 ◽

Vol 16 (1) ◽

pp. 41

Author(s):

Mohammed Rasheed ◽

Rosli Omar ◽

Marizan Sulaiman ◽

Wahidah Abd Halim

Keyword(s):

Output Voltage ◽

Single Phase ◽

Pulse Width Modulation ◽

Linear Equations ◽

Harmonic Distortion ◽

Particle Swarm ◽

Multilevel Inverter ◽

Harmonic Elimination ◽

Selective Harmonic Elimination ◽

Non Linear Equations

<span>In this paper, modified multilevel inverter, via addition of an auxiliary bidirectional switch, based on Newton Raphson (NR) and Particle Swarm Optimization (PSO) techniques is presented. The NR and PSO techniques were employed for selective harmonics elimination (SHE) solution in a modified Cascaded H Bridge Multilevel inverter (CHB-MLI). The Selective Harmonic Elimination Pulse-Width Modulation (SHE-PWM) is a powerful technique for harmonic minimization in multilevel inverter. The NR and PSO techniques were used to determine the switching angles by solving the non-linear equations of the output voltage waveform of the modified CHB-MLI in order to control the fundamental component and eliminate some low order harmonics. The proposed NR and PSO techniques are capable to minimize the Total Harmonic Distortion (THD) of the output voltage of the modified inverter within allowable limits. This paper aims to modeling and simulation by MATLAB of the modified topology of the CHB-MLI for a single-phase prototype for 13-levels. The inverter offers less THD and greater efficiency using PSO control algorithm compared with the NR algorithm. <br https://server9.kproxy.com/servlet/redirect.srv/sruj/snbzofspy/skvyzff/p1/> The performance of the proposed controllers based on NR and PSO techniques is verified through simulation.</span>

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Staircase Selective Harmonic Elimination in Multilevel Inverters to Achieve Wide Output Voltage Range

10.36227/techrxiv.14397494 ◽

2021 ◽

Author(s):

Amirhossein Pourdadashnia ◽

Mohammad Farhadi-Kangarlu ◽

milad Sadoughi

Keyword(s):

Power Electronics ◽

Output Voltage ◽

Voltage Range ◽

Multilevel Inverters ◽

Harmonic Elimination ◽

Selective Harmonic Elimination ◽

Drive Systems

<h5>12th Annual Power Electronics, Drive Systems and Technologies (PEDSTC 2021)</h5>

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Design of PSO Based Cascaded Multilevel Inverter with Unequal DC Sources

International Journal of Engineering & Technology ◽

10.14419/ijet.v7i4.38.24310 ◽

2018 ◽

Vol 7 (4.38) ◽

pp. 7

Author(s):

Rupali Mohanty ◽

Debashis Chatterjee ◽

Gopinath Sengupta

Keyword(s):

Particle Swarm Optimization ◽

Output Voltage ◽

Pso Algorithm ◽

Transcendental Equation ◽

Multilevel Inverter ◽

Swarm Optimization ◽

Harmonic Elimination ◽

Simulation Results ◽

Cascaded Multilevel Inverter ◽

Elimination Problem

This paper focusing on, the total harmonics distortion (THD) of the output voltage is minimized by the help of a cascade multilevel inverter with non-equal DC sources using particle swarm optimization (PSO) algorithm. The nonlinear transcendental equation that describing the harmonic elimination problem is solved by using many methods existing in literature. In the proposed technique, unequal DC sources are taken for the multilevel inverter, which is practical when different renewable sources are used. The desired switching angles are found out by implementing PSO algorithm which results the minimum THD. Experimental details along with simulation results of 11-level inverter are shown to validate the theory.

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