Aquila Optimization Based Harmonic Elimination in a Modified H-Bridge Inverter

Multilevel inverters (MLIs) are capable of producing high-quality output voltage and handling large amounts of power. This reduces the size of the filter while also simplifying the circuitry. As a result, they have a wide range of applications in industries, particularly in smart grids. The input voltage boosting feature is required to use the MLI with renewable energy. Moreover, many components are required to get higher output voltage levels that add weight and cost to the circuit. Numerous MLI topologies have been identified to minimize the losses, device count, and device ratings. A seven-level modified H-bridge inverter with a reduced component count, and reduced THD is presented in this paper. Two DC sources with six IGBTs have been used to generate a seven-level output voltage, and the Aquila Optimizer (AO) has been implemented to get the regulated output. MATLAB/Simulink environment has been used for designing the simulation model. Furthermore, the simulation result has been validated in the laboratory on a hardware setup using the DSP-TMS320F28335 Launchpad. With the reduced number of switching devices as well as the dc supply, the size of the inverter is compacted and becomes more economical.

Download Full-text

Improved reliable multilevel inverter for renewable energy systems

Indonesian Journal of Electrical Engineering and Computer Science ◽

10.11591/ijeecs.v14.i3.pp1141-1147 ◽

2019 ◽

Vol 14 (3) ◽

pp. 1141

Author(s):

Sujatha M ◽

A.K. Parvathy

Keyword(s):

Renewable Energy ◽

Simulation Model ◽

Output Voltage ◽

Energy Systems ◽

Multilevel Inverter ◽

Voltage Level ◽

Renewable Energy Systems ◽

Matlab Simulink ◽

Multilevel Inverters ◽

Main Drawback

<p>New improved multilevel inverter (MLI) topology for Renewable energy systems is proposed in this paper. Cascaded multilevel inverters (CMLI) produce an output voltage level depending on the number of individual sources connected. The main drawback of CMLI is, as the output voltage level increases in number, the switches used in the device also increases and hence the complexity of the circuit increases. As the number of switches increases, the reliability of the circuit decreases. In this paper a novel MLI topology, which employs lesser number of switches, is proposed. A simulation model of CMLI and the proposed MLI has been built in MATLAB/SIMULINK. The reliability of the CMLI and the new topology MLI is analyzed by using MIL-HDBK-217. </p>

Download Full-text

Caracterización del método SVPWM con inversor trifásico de dos niveles

Revista ECIPeru ◽

10.33017/reveciperu2019.0005/ ◽

2019 ◽

pp. 22-29

Keyword(s):

Pulse Width ◽

Output Voltage ◽

Pulse Width Modulation ◽

Harmonic Distortion ◽

Input Voltage ◽

Good Choice ◽

Voltage Source ◽

Voltage Source Inverter ◽

Matlab Simulink ◽

Wide Range

Caracterización del método SVPWM con inversor trifásico de dos niveles Juan Tisza1, 2, Javier Villegas2 1Universidad Nacional de Ingeniería, Av. Túpac Amaru 210, Rímac, Lima Perú 2Universidad Nacional Mayor de San Marcos, Ciudad Universitaria, Lima, Perú Recibido 17 de junio del 2019, Revisado el 17 de julio de 2019 Aceptado el 19 de julio de 2019 DOI: https://doi.org/10.33017/RevECIPeru2019.0005/ Resumen Las cargas en Corriente Alterna (CA) requieren voltaje variable y frecuencia variable. Estos requisitos se cumplen con un inversor de fuente de voltaje (VSI). Se puede lograr un voltaje de salida variable variando la tensión de CC de entrada y manteniendo constante la ganancia del inversor. Por otro lado, si la tensión de entrada CC es fija y no es controlable, se puede lograr una tensión de salida variable variando la ganancia del inversor, lo que normalmente se logra mediante el control de modulación por ancho de pulso dentro del inversor. Hay varias técnicas de modulación de ancho de pulso, pero la técnica de vector espacial es una buena opción entre todas las técnicas para controlar el inversor de fuente de voltaje. La modulación por ancho de pulso de vector espacial (SVPWM) es un método avanzado y muy popular con varias ventajas tales como la utilización efectiva del bus de CC, menos generación de armónicos en voltaje de salida, menos pérdidas de conmutación, amplio rango de modulación lineal, etc. En este documento, se ha tomado un inversor de fuente de voltaje constante CC y se ha implementado la SVPWM para VSI de dos niveles utilizando MATLAB / SIMULINK. Descriptores: Modulación de ancho de pulso (PWM), modulación de ancho de pulso de vector espacial (SVPWM), distorsión armónica total (THD), inversor de fuente de voltaje (VSI). Abstract Alternating Current (AC) loads require variable voltage and variable frequency. These requirements are met by a voltage supply inverter (VSI). A variable output voltage can be achieved by varying the input DC voltage and keeping the inverter gain constant. On the other hand, if the DC input voltage is fixed and not controllable, a variable output voltage can be achieved by varying the gain of the inverter, which is normally achieved by controlling the pulse width modulation within the inverter. There are several pulse width modulation techniques, but the spatial vector technique is a good choice among all the techniques for controlling the voltage source inverter. Spatial vector pulse width modulation (SVPWM) is an advanced and very popular method with several advantages such as effective utilization of CC bus, less harmonic generation in output voltage, less switching losses, wide range of linear modulation, etc. In this document, a CC constant voltage source inverter has been taken and SVPWM has been implemented for two-level VSI using MATLAB / SIMULINK. Keywords: Pulse Width Modulation (PWM), Space Vector Pulse Width Modulation (SVPWM), Total Harmonic Distortion (THD), Voltage Source Inverter (VSI).

Download Full-text

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

2021 12th Power Electronics, Drive Systems, and Technologies Conference (PEDSTC) ◽

10.1109/pedstc52094.2021.9405826 ◽

2021 ◽

Author(s):

Amirhossein Pourdadashnia ◽

Mohammad Farhadi-Kangarlu ◽

Milad Sadoughi

Keyword(s):

Output Voltage ◽

Voltage Range ◽

Multilevel Inverters ◽

Harmonic Elimination ◽

Selective Harmonic Elimination

Download Full-text

Experimental validation of new self-voltage balanced 9L-ANPC inverter for photovoltaic applications

Scientific Reports ◽

10.1038/s41598-021-84531-z ◽

2021 ◽

Vol 11 (1) ◽

Author(s):

M. Jagabar Sathik ◽

Dhafer J. Almakhles ◽

N. Sandeep ◽

Marif Daula Siddique

Keyword(s):

Output Voltage ◽

Pulse Width Modulation ◽

Superior Performance ◽

Modulation Scheme ◽

Switching Frequency ◽

Switched Capacitor ◽

Renewable Energy Resources ◽

High Quality ◽

Multilevel Inverters ◽

Blocking Voltage

AbstractMultilevel inverters play an important role in extracting the power from renewable energy resources and delivering the output voltage with high quality to the load. This paper proposes a new single-stage switched capacitor nine-level inverter, which comprises an improved T-type inverter, auxiliary switch, and switched cell unit. The proposed topology effectively reduces the DC-link capacitor voltage and exhibits superior performance over recently switched-capacitor inverter topologies in terms of the number of power components and blocking voltage of the switches. A level-shifted multilevel pulse width modulation scheme with a modified triangular carrier wave is implemented to produce a high-quality stepped output voltage waveform with low switching frequency. The proposed nine-level inverter’s effectiveness, driven by the recommended modulation technique, is experimentally verified under varying load conditions. The power loss and efficiency for the proposed nine-level inverter are thoroughly discussed with different loads.

Download Full-text

Investigation of PV Connected Multilevel Cascaded H-Bridge Inverter Using Disposition Techniques

International Journal of Engineering & Technology ◽

10.14419/ijet.v7i3.31.18195 ◽

2018 ◽

Vol 7 (3.31) ◽

pp. 30

Author(s):

Muzeeb Khan Patan ◽

P Udaya Bhanu ◽

M D. Azahar Ahmed

Keyword(s):

Renewable Energy ◽

Renewable Energy Sources ◽

Energy Sources ◽

Pv System ◽

Matlab Simulink ◽

Multilevel Inverters ◽

Power Handling ◽

Technological Improvements ◽

The Given

Inverters have many Technological improvements in their maximum power handling capabilities by using renewable energy sources. Multilevel inverters give effective and efficient interface for renewable energy sources and perform Transformer-less operation and increase the power quantity and quality of voltage of the PV system. In this paper, the benefits of H-bridge inverters including the total harmonic distortions are discussed. This paper has primarily focused on Sinusoidal PWM and worked on the carrier based phase disposition techniques. The performances of modulation schemes are compared. Simulations were done using MATLAB Simulink for the given PWM techniques.

Download Full-text

Low cost universal battery charger for wide range input voltage and wide range output voltage in portable applications

2008 IEEE Power Electronics Specialists Conference ◽

10.1109/pesc.2008.4592710 ◽

2008 ◽

Cited By ~ 2

Author(s):

Hidekazu Miwa ◽

Sung-Yeul Park ◽

Brian T. Clark ◽

Danielle S. K. Ditzler ◽

Greg Malone ◽

...

Keyword(s):

Output Voltage ◽

Low Cost ◽

Input Voltage ◽

Battery Charger ◽

Wide Range

Download Full-text

A Renewable Energy Fed Non-Isolated Inverse Output Voltage DC-DC Converter with Broad Range of Conversion

International Journal of Engineering and Advanced Technology - Regular Issue ◽

10.35940/ijeat.e1038.0785s319 ◽

2019 ◽

Vol 8 (5S3) ◽

pp. 160-163

Keyword(s):

Renewable Energy ◽

Theoretical Analysis ◽

Output Voltage ◽

Conversion Ratio ◽

Negative Voltage ◽

Wide Range ◽

Negative Output

Renewable Energy fed non-isolated negative output Converter with dc-dc conversion is proposed which employed for various applications. In industrial purposes only few converters are available for wide conversion ratio, the proposed design has come up with wide range negative voltage load applications. The proposed converter is analyzed and design for continuous condition mode. For verification of theoretical analysis, the proposed converter is simulated using PSIM 9.0.

Download Full-text

AC-AC voltage regulation by switch mode PWM Cûk voltage controller with improved performance

10.32920/ryerson.14654562 ◽

2021 ◽

Author(s):

Palash K. Banerjee

Keyword(s):

Output Voltage ◽

Supply Voltage ◽

Input Voltage ◽

Voltage Regulation ◽

Control Circuit ◽

Voltage Regulator ◽

Error Signal ◽

Constant Voltage ◽

Wide Range ◽

Switching Devices

In this research project, an AC Cûk voltage regulator has been proposed for maintaining constant voltage across the load during wide range of input voltage fluctuations. The proposed AC Ck voltage regulator made of practical IGBT switches has been investigated for both manual and automatic control circuit. A fraction of the output voltage is taken as the input voltage of the control circuit and produce the error signal if any changes occur in the output voltage. The modified error signal is used to make PWM signals for switching devices as per output voltage of regulator. The PWM controls the ON/OFF time (Duty cycle) of switching devices (IGBTs) of the proposed regulator. As a result the regulator is maintaining a constant voltage across the load during any change in supply voltage. The simulation waveforms and the calculated total harmonics distortion (THD) values are compared with previously studied AC Buck-Boost regulator. The observed simulated waveforms of output voltage, output current and input current and THD values have been improved in case of proposed AC Cûk voltage regulator.

Download Full-text

New Selective Harmonic Elimination-Pulse-Width Modulation for Cascaded H-bridge Multilevel Inverters

International Journal of Emerging Electric Power Systems ◽

10.1515/ijeeps-2018-0025 ◽

2018 ◽

Vol 19 (5) ◽

Author(s):

Piyush L. Kamani ◽

Mahmadasraf A. Mulla

Keyword(s):

Real Time ◽

Pulse Width ◽

Output Voltage ◽

Pulse Width Modulation ◽

Experimental Studies ◽

Equal Area ◽

Multilevel Inverters ◽

Harmonic Elimination ◽

Selective Harmonic Elimination ◽

Selection Of

AbstractThis paper presents a univariate equation-based selective harmonic elimination-pulse-width modulation (USHE-PWM) method for cascaded H-bridge (CHB) multilevel inverters (MLIs). Using equal-area criteria, the selection of voltage rating of dc-links have been done. The output voltage is controlled by inserting switching notch at the centre of each level of output voltage. Instead of conventional transcendental SHE-PWM equations, all these calculations are accomplished using univariate equations. This simplifies the real-time implementation of the proposed method greatly, even for the MLI with a large number of levels. The USHE-PWM method can eliminate more harmonics compared with the conventional SHE-PWM methods. While controlling the output voltage, the harmonic pattern remains unaffected. The validity of the proposed method is confirmed by the simulation and experimental studies.

Download Full-text