total harmonic distortion (THD)
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Recent papers in total harmonic distortion (THD)
Inverter is an important topology in modern power electronic system which provides a solution to convert the average power flow from DC power to AC power. Inverter employs different soft switching techniques to solve the problems faced in... more
Variable Speed Drives (VSD) due to their high dynamic performances are growing importance in industrial applications. PWM inverters are mainly responsible for VSDs dynamic operation but they give rise to bearing currents. Parasitic... more
This work presents investigation of passive filter performance on three-phase inverter with 180° conduction mode. The simulation model ofthe inverter is developed by using MATLAB/Simulink. The power circuit used Insulated Gate... more
The journal explains the distortion effect of more than 2 superposition wave by using Multisim 12
ABSTRAK PT XYZ merupakan salah satu perusahaan ban terbesar di dunia, dimana listrik merupakan salah satu energi paling vital yang dibutuhkan guna memenuhi kebutuhan produksi. Terdapat beberapa faktor yang dapat mempengaruhi kualitas daya... more
This paper deals with the design of cascaded 11 level H- bridge inverter. It includes a comparison between the 11 level H-bridge and T-bridge multilevel inverter. The cascaded inverter of higher level is a very effective and practical... more
Cascaded H-bridge Multilevel Inverter (MLI) is most efficient topology for medium and high voltage DC-AC conversion, having less output harmonics and less commutation losses. Disadvantages are their complexity, more number of power... more
This paper is based on the improvement of power quality (PQ) using fuel cell and fuzzy based controller. By using the proposed controller, the quality of power in the grid system especially in micro grid connected with non-linear and... more
ABSTRAK Krisis energi listrik yang melanda indonesia menyebabkan beberapa persoalan dalam bidang ketenagalistrikan, sehingga dilakukan upaya untuk mengatasi krisis energi listrik, dengan melakukan peningkatan efisiensi dari peralatan yang... more
This article uses an analytical tool called dist-space to examine the structural role of guitar distortion in hard rock and heavy metal. Dist-space facilitates categorizing, comparing, and graphing the changes in a composition’s... more
— This paper presents Simulation and displaying of 6-pulse and 12-pulse multi-pulse converter topologies. In this paper multi-pulse converters are created for improving quality of power, to lessen harmonics in AC main and ripple in DC... more
One of the major electrical load on a utility grid is industrial, street and residential lightings. To enhance the energy efficiency and as a measure of energy conservation, incandescent lamps (IL) are replaced with the modern lights.... more
TRIASO es una empresa mediana industrial dedicada a la elaboración de plantas de asfalto y trituradoras. En la gran mayoría de su proceso se requiere el uso de la energía eléctrica, ya que en su carga instalada predominan motores,... more
Cet article décrit la méthodologie d'améliorer la qualité de puissance à l'extrémité de charge dans un système photovoltaïque PV connectée au réseau électrique basse tension. La cellule photovoltaïque transforme l'énergie solaire... more
This paper analyzed three-level Cascaded H-bridge Multilevel Inverter (CHMLI) utilizing two modulation techniques namely Sinusoidal Pulse Width Modulation (SPWM) and Space Vector Pulse Width Modulation (SVPWM). The performance and the... more
Sinusoidal pulse width modulation or SPWM is widely used in power electronics. To digitize the power so that a sequence of voltage pulses is generated by ON or OFF of the power switches the pulse width modulation inverter has been the... more
This paper briefly discusses various types of inverters and the output waveforms of square wave inverter and SPWM inverter. FFT analysis is performed on the outputs obtained for SPWM inverter. The variation in THD by varying the... more
The losses in European Union distribution transformers are estimated at about 33 TW · h/year, whereas reactive power and harmonic losses add a further 5 TW · h/year. The reduction of distribution transformer no-load loss is particularly... more
This paper proposes an analytic study of SEPIC (Single-Ended Primary Inductor Converter) converter by employing Hysteresis Current Control and PI control technique to observe Output Voltage Stability, Total Harmonic Distortion (THD),... more
A modified multilevel inverter (MLI) structure has been presented for Photovoltaic (PV) fed 2.3 kV micro-grid applications. To feed the cascaded multilevel micro-grid connected inverter (CM-MGCI) voltage, a PV array is designed... more
In this study, a modified carrier is proposed to generate PWM gating signal. Proposed PWM method reduces total harmonic distortion (THD) of the output voltage of inverter up to 5.8% than the traditional triangular carrier based PWM. Major... more
In this work, the phase shifted carrier pulse width modulation (PSC PWM) technique is applied as the most favorable modulation scheme for a photovoltaic (PV) fed cascaded multilevel-micro-grid connected inverter (CM-MGCI), with... more
The world today has seen a rise in power demand with the expansion in industry and technology. Coal powered plants alone cannot meet this, due to the harmful emissions and greenhouse gases emitted, which are a contributor to heating. to... more
This paper presents a new dual switch control structure for an AC/DC non-inverting cascaded buck-boost power factor correction converter. The proposed converter operates at a discontinuous capacitor voltage mode providing an inherent high... more
Multilevel inverters (MLIs) are playing a major role in every sector of power industries, which is growing significantly over the years. Although multilevel inverters are highly applicable, they have some stern disadvantages that need to... more
This paper proposes and describes the design of a three-phase three-level nine switch voltage source inverter. The proposed topology consists of three bi-directional switches inserted between the source and the full-bridge power switches... more
—Different modulation techniques used to control multilevel converters can be classified based on the selected converter topology and optimization goals. Among all proposed modulation methods low switching frequency modulation techniques... more
Most electronic and electrical appliances such as radio, televisions, computers, etc. uses DC supply internally. This is done by converting the source supply (single phase or three phase) into DC supply. The internal DC supply source... more
This paper proposed a simulation model of three different typologies of five-level inverter. The study investigated three topologies of multilevel inverter namely Flying Capacitor Multilevel Inverter (FCMLI), Diode Clamped Multilevel... more
The paper presents power quality enhancement on low voltage of three phase grid caused by PV generator integration under variabel solar irradiance level on constant temperature and load. MPPT Fuzzy helps to generate duty cycle to control... more
This paper presents a single-phase active power filter for harmonic compensation which is consists of a series active power filter and a shunt passive filter. The active filter connected in series to a source acts as a harmonic isolator... more
The DSP-based fuzzy logic controller for a battery charger has been investigated in this paper. The conventional battery charger experiences a highly distorted current harmonic waveform and low power factor. Thus, the proposed battery... more
—The laboratory prototype of a frequency converter (FC) is analyzed using readily available Spartan-3E Field Programmable Gate Array (FPGA) kit and Personnel Computer (PC). The output frequency range has been varied over a wide range by... more
This paper highlights the problems associated with single pulse width modulation, the most important being high harmonic content in output voltage. A comparative study with Sinusoidal Pulse Width Modulation Technique is done highlighting... more
Conventional light sources are less efficient as compared to the light emitting diode and compact fluorescent lamps. Conventional incandescent filament lamps are resistive and therefore do not depend on power quality parameters. In the... more
This paper proposes a new fuzzy logic controller for seven-level hybrid cascaded H-bridge inverter. The inverter is used for on-grid application of PV a system. Here a Sinusoidal pulse width-modulation (SPWM) technique is applied for... more
Power quality is a pressing concern and of the utmost importance for advanced and high-tech equipment in particular, whose performance relies heavily on the supply’s quality. Power quality issues like voltage sags/swells, harmonics,... more
Solar PV system development and integration with existing grid is very fast in recent years all over the world, as they require limited maintenance, pollution free and simple structure. When observing the factors affecting the performance... more
An AC-DC flyback converter for outdoor LED lighting is proposed. In the proposed converter is designed to be operated in the discontinuous-conduction mode (DCM) to achieve a high power factor. A DC-DC flyback module is designed to provide... more
This paper presents an implementation of single phase voltage source inverter (VSI) control algorithm for grid connected photovoltaic (PV) system. The maximum power point tracking (MPPT) is capable of extracting maximum power from PV... more
Multilevel inverters are emerging as the new breed of power converter options for high power applications. They typically synthesis the staircase voltage waveform (from several dc sources) which reduced harmonic content. This paper... more
In this paper, voltage sag compensation of point of common coupling (PCC) using a new structure of fault current limiter (FCL) is proposed. The proposed structure prevents voltage sag and phase-angle jump of the substation PCC after fault... more
Modular multilevel converter (MMC) has become a promising technology Handling of Electric vehicles (EV) power source by using different techniques and algorithm. Where the battery cells are series connected to enhance the output voltage.... more