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Статті в журналах з теми "THD (Total Harmonic Distortion)"

Автор: Grafiati

Опубліковано: 3 червня 2025

Оновлено: 31 липня 2025

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1

Balkrishna, Mirajkar Nilesh, and Dr Rahul Kumar Budania. "Advanced Harmonic Analysis in Industrial Power Systems: Its Impact on Enhancing Power Quality and System Performance." INTERANTIONAL JOURNAL OF SCIENTIFIC RESEARCH IN ENGINEERING AND MANAGEMENT 08, no. 11 (2024): 1–7. http://dx.doi.org/10.55041/ijsrem38510.

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This paper presents an advanced harmonic analysis of industrial power systems, focusing on its impact on enhancing power quality and system performance. The study investigates the harmonic distortions caused by nonlinear loads, particularly those introduced by Variable Frequency Drives (VFDs), in a manufacturing plant. Measurements of key electrical parameters, such as voltage, current, and Total Harmonic Distortion (THD), were recorded and analysed. The results reveal significant harmonic distortion levels, exceeding industry standards, which can lead to reduced equipment efficiency and poten

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2

Kishore, B., Senbakaraj, Periyasamy, and Poongkabilan. "THD Reduction in Multi-Level Inverters based on Multicarrier Pulse Width Modulation Technique." International Journal of Engineering and Advanced Technology (IJEAT) 9, no. 4 (2020): 1970–77. https://doi.org/10.35940/ijeat.D8994.049420.

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Due to the advent of technology, electronic equipments are much more sensitive to harmonic and its analysis play an important role whereby reducing the distortion due to harmonics needs attention. To meet the requirements of the industries, harmonic free-high rating power sources are in high demand. Total Harmonic Distortion (THD) is an indicator of AC voltage source quality. In case of inverters, one such way to reduce THD would be the use of Pulse Width Modulation (PWM). The existing methods mainly use the low frequency pulse width modulation techniques for the switching. Control methods emp

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3

Ayub, Munirah, Chin Kim Gan, and Aida Fazliana Abdul Kadir. "Harmonic Performance of Grid-Connected PV System under Various Penetration Levels." Applied Mechanics and Materials 699 (November 2014): 486–91. http://dx.doi.org/10.4028/www.scientific.net/amm.699.486.

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This paper studies the harmonic performance of grid-connected PV system under various penetration levels. The system under study was modelled in MATLAB/Simulink environment. Current and voltage distortions were studied in terms of the percentage of Total Harmonic Distortion (THD) under different PV penetration scenarios. The results showed that the Grid-Connected PV generates a different level of harmonics distortion depending on the PV penetration level that was injected to the grid.

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4

Richard, Laurensius Richard Mulyadi, and Insani Abdi Bangsa. "STUDI ANALISA PERHITUNGAN NILAI HARMONIK TEGANGAN DAN ARUS PADA BUDDHA TZU CHI HOSPITAL." Aisyah Journal Of Informatics and Electrical Engineering (A.J.I.E.E) 5, no. 1 (2023): 30–38. http://dx.doi.org/10.30604/jti.v5i1.124.

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ABSTRACT  The occurrence of harmonics is caused by the non-linear operation of the electrical load. The level of harmonic distortion or what is called Total Harmonic Distortion (THD) in a transformer can cause losses that affect the efficiency of the transformer. In this study, THD measurements were carried out on four transformers at Tzu Chi Hospital. This research was conducted using observation, documentation, and direct measurements in the field to analyze within the limits of the IEEE 519-2014 standard. The purpose of this study was to analyze the main electrical system at Tzu

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5

Abdullah, Mohamed, and Salimin Suriana. "THD performance of single phase five level inverter using proportional resonant and harmonic compensators current controller." International Journal of Power Electronics and Drive System (IJPEDS) 11, no. 3 (2020): 1423–29. https://doi.org/10.11591/ijpeds.v11.i3.pp1423-1429.

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This paper observe the total harmonic distortion (THD) performance of single phase five level inverter using proportional resonant (PR) and harmonic compensators current controller. The THD when adding PR current controller was 1.6% at first. After more functions were added to the PR current controller to reduce the THD at the 3rd, 5th and 7th harmonic orders, the THD of the 3rd harmonic order was reduced from 0.45% to 0.1% while the 5th and 7th harmonic orders were reduced from 0.6% and 0.43% to 0.25% and 0.4% respectively. The development and simulation is performed using Matlab/Simulink. Th

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6

Braide, S. L. "Evaluation and Analysis of Harmonic Distortion on 330kV Network Case Study Selected Sub-Region Nigerian Power System for Improve Power Quality." Journal of Progress in Engineering and Physical Science 1, no. 1 (2022): 13–22. http://dx.doi.org/10.56397/jpeps.2022.11.03.

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This paper presented fundamental characteristics of harmonic studies and its related work. The total harmonic distortion (THD) of the transmission line were computed using harmonics contents parameters of the waveform (harmonic voltage and impedance magnitude values). Results of THD for the 330kV transmission line are presented using harmonic load flow analysis in ETAP—domain on the view to measure the level of distortion in the network. Figure 2 shows the section of the harmonic load flow simulation in order to check for degree of harmonic distortion in the system under investigation. The pro

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7

Nazir, Refdinal, Syafii Syafii, Andi Pawawoi, Fadjril Akbar, and Axel Doriza. "Differences in the impact of harmonic distortion due to the installation of electronic load controller in self-excited induction generator and synchronous generator." International Journal of Power Electronics and Drive Systems (IJPEDS) 10, no. 1 (2019): 104. http://dx.doi.org/10.11591/ijpeds.v10.i1.pp104-116.

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In general, the application of Self-Excited Induction Generator (SEIG) or Synchronous Generator (SG) on the Stand-Alone Micro Hydel Power Plant (MHPP) is equipped with Electronic Load Controller (ELC) to control generator output during variations in consumer load. One type of ELC that is cheap and rigid developed today is the ELC, which is constructed by the uncontrolled bridge rectifier with DC Chopper. Based on the operational concept, basically this type of ELC can be implemented on both SEIG and SG, but both of these generators will have a different harmonic distortion effect on the output

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8

Budi Aryawan, I. Putu, Antonius Ibi Weking, and I. Wayan Rinas. "ANALISIS PEMASANGAN FILTER PASIF DAN AKTIF TERHADAP KANDUNGAN HARMONISA DAN RUGI-RUGI DAYA GARDU DISTRIBUSI KA 2085 DI PT. PLN (Persero) DISTRIBUSI BALI RAYON MENGWI." Jurnal SPEKTRUM 5, no. 1 (2018): 41. http://dx.doi.org/10.24843/spektrum.2018.v05.i01.p06.

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Operation of nonlinear loads can cause harmonic distortion in the voltage and current waveforms that result in abnormal electrical system condition. Content THD (Total Harmonics Distortion) an excess flow can cause power quality systems become worse, thus causing the system power factor is lower. Active filter and Passive filter which aims to reduce harmonics that arise. Analysis THD simulation and measurement results in accordance with IEEE 519-2014 and analysis designing of a passive filter and active filter is right to suppress harmonic distortion. The analysis shows that the installation o

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9

Saad T. Y. Alfalahi. "Harmonic Distortion Analysis and Mitigation in an On-Grid Wind Farm using Passive Filters: A Case Study on the Shahat Distribution Network." Journal of Information Systems Engineering and Management 10, no. 44s (2025): 812–22. https://doi.org/10.52783/jisem.v10i44s.8661.

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The numerous non-linear power electronic components in a wind energy conversion system (WECS) cause harmonic distortion, which diminishes the quality of the electricity produced. For WECS to function optimally with the power grid, these distortions must not exceed the limits established by international standards for total harmonic distortion (THD) in voltage and current waveforms. As required by current rules, this study looks at the harmonic distortion at the point of common coupling (PCC) between a planned 10.5 MW wind farm and the SHAHAT distribution network in northeastern Libya. MATLAB/S

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10

Kandavel, B., G. Uvaraj, and M. Manikandan. "Comparative Study of Total Harmonic Distortion in Multilevel Inverters Based WECS." International Journal of Engineering & Technology 7, no. 3.1 (2018): 42. http://dx.doi.org/10.14419/ijet.v7i3.1.16794.

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This paper presents comparative study of Total Harmonic Distortion (THD) and its individual harmonic contents without grid and with grid for Diode clamped multi level inverter (DCMLI) and Flying capacitor clamped multilevel inverter (FCMLI) based Doubly Fed Induction Generator (DFIG) employing PI and Fuzzy logic controller (FLC). Simple method to control for a variable speed wind energy conversion system with a DFIG is connected to the grid through a diode rectifier and a diode clamped multilevel inverter (DCMLI). The DC-link voltage is controlled through a DC-DC boost converter to keep the DC

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11

Surapati, Alex, Martin Panggabean, and Muhammad Khairul Amri Rosa. "Pengaruh Total Harmonic Distortion (THD) Terhadap Pembacaan kWh Meter Semi Digital." JURNAL AMPLIFIER : JURNAL ILMIAH BIDANG TEKNIK ELEKTRO DAN KOMPUTER 12, no. 1 (2022): 25–33. http://dx.doi.org/10.33369/jamplifier.v12i1.21460.

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AbstrakEnergy measurement using a kWh meter must have good accuracy. The increasing use of non-linear electrical equipment causes harmonics in the network. This study aims to measure and analyze voltage, current, power, power factor and the percentage of Total Harmonic Distortion (THD). The research was carried out by designing and making a device in the form of an electrical circuit connected to a semi-digital kWh meter with a fixed load of 10 incandescent lamps with a power of 100 watts each and 1 single-phase induction motor. The test results show that the incandescent lamp load test produc

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12

Shrestha, Sulav, Sagar Poudel, and Sajesan Ghimire. "Design and Analysis of Single-Tuned Passive Filters for Total Harmonic Distortion (THD) Mitigation and Power Quality Enhancement." Journal of Engineering and Sciences 4, no. 1 (2025): 69–78. https://doi.org/10.3126/jes2.v4i1.76171.

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Harmonic distortion caused by nonlinear loads is a significant challenge in power systems, often resulting in reduced efficiency, overheating, and equipment malfunction. Despite the availability of various mitigation techniques, many fail to offer a cost-effective and practical solution for distribution networks. This research addresses that gap by designing and analyzing a five-stage single-tuned passive filter (STPF) system to mitigate harmonics in a 400V, 50Hz distribution network. The main objective is to reduce Total Harmonic Distortion (THD) in voltage and current to meet IEEE 519-2022 s

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13

Widagdo, Reza Sarwo, Puji Slamet Slamet, and Cahyo Pangestu. "Analysis of the Effectiveness of Using Active Filters and Passive Filters in Reducing Harmonics Using a Power Simulator (PSIM) at PT. Delta Jaya Mas." Wahana 76, no. 2 (2024): 8–28. https://doi.org/10.36456/wahana.v76i2.9283.

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The Extruder Machine at PT. Delta Jaya Mas plays a critical role in the production of rubber and PVC hoses, as well as molded rubber products. This process involves the use of a 3-phase synchronous motor and Variable Frequency Drive (VFD), which can introduce harmonics into the electrical system due to their non-linear load. These harmonics can cause waveform distortion, leading to decreased efficiency and potential equipment damage. To overcome this issue, a comprehensive research is being conducted utilizing the Power Simulator (PSIM) program to analyze the impact of harmonics and evaluate t

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14

Siahaan, Fernando Jeremia, Eva Magdalena Silalahi, Bambang Widodo, and Robinson Purba. "PENGUKURAN TOTAL HARMONIC DISTORTION (THD) TERHADAP LAMPU HEMAT ENERGI (LHE) DAN LIGHT-EMITTING DIODE (LED)." Lektrokom : Jurnal Ilmiah Teknik Elektro 3, no. 1 (2020): 8. http://dx.doi.org/10.33541/lektrokom.v3i1.3372.

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Abstract. Along with the rapid development of power electronics technology which is also useful for saving electrical energy. This technology is also used in lighting such as energy saving lamps (LHE) and light-emitting diode (LED). However, LHE and LED are non-linear loads that cause electrical power quality problems, namely producing voltage and current waveforms that are no longer sinusoidal or distorted waveforms. Distorted waves cause harmonic waves which have a frequency multiple of the fundamental frequency. The sum of the effective values of the harmonic components of the distort

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15

T., D. Dongale1 D. A. Kulkarni2 M. D. Uplane 3. "HARMONICS ANALYSIS OF FOUR SWITCH THREE PHASE INVERTER." International Journal of Information Technology, Modeling and Computing (IJITMC) 1, November (2018): 01–07. https://doi.org/10.5281/zenodo.1421496.

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In the viewpoint of reliability implication and cost effectiveness of three phase inverter, there should be less device count in inverter topology and fewer losses in the semiconductor switches. The earlier reported less device count topology by many research groups are facing the problem of Total Harmonic Distortion (THD). The imperfect design value of DC link capacitor is the main reason of Harmonic Distortion (THD) problem. The ripple in the dc link voltages of Voltage Source Inverter (VSI) is leads to additional harmonics distortion. This paper present the simulative view of minimization o

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16

Adjie, Alfin Prima, and Muhammad Imran Hamid. "Harmonics Analysis of Input Current of 3-Phase PWM Rectifier." Andalas Journal of Electrical and Electronic Engineering Technology 1, no. 1 (2021): 31–40. http://dx.doi.org/10.25077/ajeeet.v1i1.6.

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Rectifier is a non-linier load that causes harmonic distortion in the power system. Pulse-width modulation (PWM) method is an effective method in pressing the magnitude of harmonics in a rectifier application, it provides an almost sinusoidal input current. However, the variation of loads that supplied by a rectifier cause the harmonics that arise can still beyond the applicable standard. The amount of harmonics in the operating range of a rectifier need to be identified to determine the filter on the input side. In this research article, 3-phase PWM rectifier was designed with hysteresis curr

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17

Prasetijo, Hari, Priswanto Priswanto, Widhiatmoko H.P., and Irunowo Irunowo. "Analisa Pemasangan Filter Pasif Sebagai Peredam Harmonisa Akibat Beban Non Linier." JRST (Jurnal Riset Sains dan Teknologi) 7, no. 1 (2023): 109. http://dx.doi.org/10.30595/jrst.v7i1.16677.

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Studi ini bertujuan menganalisa dampak pemasangan filter pasif pada beban listrik yaitu salah satu konsumen 3 phase PT. PLN. Variabel yang diamati adalah total harmonic distortion (THD) arus, THD tegangan, faktor daya dan putaran kwh meter elektromekanik. Metode yang digunakan adalah pengukuran total harmonic distortion (THD) pada beban listrik 3 phase dilakukan menggunakan spectrum analyzer, perancangan filter pasif single tuned untuk THD arus tertinggi, simulasi menggunakan aplikasi Mathlab dan Analisa. Data yang diperoleh arus orde 3 memiliki distorsi paling tinggi, yaitu THD arus total seb

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18

Adesina, Lambe Mutalub, Olalekan Ogunbiyi, Khalil D. Dalegan, and Ahmed B. Olaoye. "Assessment of Total Harmonic Distortion for Power Quality Improvement in Low Voltage Distribution Networks." Journal Of Engineering Research Innovation And Scientific Development 3, no. 1 (2025): 56–71. https://doi.org/10.61448/jerisd31256.

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Ensuring high power quality in low-voltage distribution networks is crucial for efficient and reliable electricity supply. However, the increasing presence of nonlinear loads introduces harmonics into the power system network (PSN), leading to waveform distortions that degrade power quality. These harmonics, primarily generated by electronic devices, motors, generators, and transformers, contribute to power losses, system instability, and unbalanced load distribution at feeder pillars, ultimately affecting service delivery. This study aims to assess the Total Harmonic Distortion (THD) levels i

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19

Guo, Yu, and Wei Li. "Study of Harmonic Suppression Method Based on the Class D Amplifier." Applied Mechanics and Materials 273 (January 2013): 384–88. http://dx.doi.org/10.4028/www.scientific.net/amm.273.384.

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Class D power amplifier has the advantages of simple structure, small volume, high efficiency, large output power, and small distortion, therefore is applied widely in the audio power amplifier integrated circuit. But because of existing higher harmonic components, the total harmonic distortion (THD) is high. In this paper, for the characteristics of class D amplifier, a feed-forward control circuit is added to the amplifier output terminal, and a composite filter is used to inhibit output harmonics further. The simulation results show that, the method can reduce the system THD effectively and

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20

Apelfröjd, S., and S. Eriksson. "Evaluation of Harmonic Content from a Tap Transformer Based Grid Connection System for Wind Power." Journal of Renewable Energy 2013 (2013): 1–8. http://dx.doi.org/10.1155/2013/190573.

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Simulations done in MATLAB/Simulink together with experiments conducted at the Ångströms laboratory are used to evaluate and discuss the total harmonic distortion (THD) and total demand distortion (TDD) of a tap transformer based grid connection system. The grid connection topology can be used with different turbine and generator topologies and is here applied on a vertical axis wind turbine (VAWT) with a permanent magnet synchronous generator (PMSG) and its operational scheme. The full variable-speed wind conversion system consists of a diode rectifier, DC link, IGBT inverter, LCL-filter, and

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21

Raharja, Lucky Pradigta Setiya, Ony Asrarul Q., Zainal Arief, and Novie Ayub Windarko. "Reduction of Total Harmonic Distortion (THD) on Multilevel Inverter with Modified PWM using Genetic Algorithm." EMITTER International Journal of Engineering Technology 5, no. 1 (2017): 91–118. http://dx.doi.org/10.24003/emitter.v5i1.174.

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In this research, modified PWM has been applied to the multilevel inverter (MLI) single-phase three-level diode clamp full bridge. Modified PWM is performed to produce minimum Total Harmonic Distortion (THD) the voltage because the quality of the good voltage is indicated by small THD. The THD indicates the quality of AC voltage source. The THD standard by the IEEE STD 519-1992 Harmonic Voltage Limits is 5% and the Pacific Corp standard is 8%, if the THD value is greater than the THD standard it can cause the electronic load to be damaged due to the damaged waveform. Modified PWM is applied by

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22

Maksimov, Anton, and Anatoliy Kubitsky. "RESEARCH DEPENDENCE TOTAL HARMONIC DISTORTION FROM FREQUENCY IN AMPLIFIERS WITH DIFFERENT TYPES AND DEPTHS OF NEGATIVE FEEDBACK." SYNCHROINFO JOURNAL 9, no. 2 (2023): 30–36. http://dx.doi.org/10.36724/2664-066x-2023-9-2-30-36.

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In work examined one of the methods obtaining the dependence of the harmonic distortion from frequency in audio power amplifier for computer circuit simulation was investigated. This made it possible to assess for the first time the influence of both the form and the depth of the negative feedback on the dependence total harmonic distortion from frequency and to reveal the conditions under which an increase in the depth of the negative feedback leads to an increase in the harmonic coefficient. The study does not show the effect of each individual cascade on the dependence of the harmonic coeff

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23

Shao, Kunming, Mingjian Zhao, Jiachun Zheng, et al. "A high-precision harmonic distortion measurement algorithm and its system design based on time-domain matrix operations." Journal of Physics: Conference Series 2290, no. 1 (2022): 012109. http://dx.doi.org/10.1088/1742-6596/2290/1/012109.

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Abstract In this paper, a harmonic distortion measurement algorithm and its system design based on time-domain matrix operations are proposed, which can quickly calculate the harmonic amplitudes, phases and total harmonic distortion of a signal. To realize the calculation of harmonic signal parameters in the time domain, we proposed a method to convert the nonlinear function representing the signal into a linear function, constructed a matrix equation, and solved the equation by the row transformation method, which significantly reduced the complexity of the algorithm. Finally, based on the pr

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24

M., H. Yatim, Ponniran A., and N. Kasiran A. "Multilevel inverter with MPWM-LFT switching strategy for voltage THD minimization." International Journal of Power Electronics and Drive System (IJPEDS) 10, no. 3 (2019): 1461–68. https://doi.org/10.11591/ijpeds.v10.i3.pp1461-1468.

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This paper presents a proposed modified pulse width modulation – low frequency triangular (MPWM-LFT) switching strategy for minimization of voltage THD with implementation of asymmetric multilevel inverter (AMLI) topology on the reduced number of switching devices (RNSD) circuit structure. Principally, MPWM-LFT able to produce optimum angle of the output voltage level in order to minimize total harmonic distortion (THD). In this study, 5-level reduced number of switching devices circuit structure is selected as a circuit configuration for asymmetric (7-level structure) multilevel inverte

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25

Kumar Dash, Srikanta, Byamakesh Nayak, and Jiban Ballav Sahu. "Selective Harmonic Elimination of an Eleven Level Inverter Using Whale Optimization Technique." International Journal of Power Electronics and Drive Systems (IJPEDS) 9, no. 4 (2018): 1944. http://dx.doi.org/10.11591/ijpeds.v9.i4.pp1944-1951.

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Reduction of total harmonic distortion in multilevel inverters is a difficult optimization problem that includes nonlinear transcendent equations having more than one local minima.This paper deals with the harmonic elimination of cascaded multilevel inverter with equal D.C. sources using a new optimization technique. The objective of this paper is to find the best combination of switching angles to minimize the lower order harmonics and the total harmonic distortion is reduced. For this purpose, a new optimization techniques i.e. whale optimization technique is considered.This algorithm is app

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26

Alegria, Francisco C. "Precision of the Sinefitting-Based Total Harmonic Distortion Estimator." Metrology and Measurement Systems 23, no. 1 (2016): 37–46. http://dx.doi.org/10.1515/mms-2016-0003.

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Abstract An analytical expression for the standard deviation of Total Harmonic Distortion (THD) estimation is derived. It applies to the case where the estimator uses sine fitting. It is shown that, in common circumstances, it is inversely proportional to the actual value of THD, the signal-to-noise ratio and the square root of the number of samples. The proposed expression is validated both with numerical simulations and an experimental setup using a Monte Carlo procedure.

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27

Bano, Kalsoom, Ghulam Abbas, Mohammed Hatatah, Ezzeddine Touti, Ahmed Emara, and Paolo Mercorelli. "Phase Shift APOD and POD Control Technique in Multi-Level Inverters to Mitigate Total Harmonic Distortion." Mathematics 12, no. 5 (2024): 656. http://dx.doi.org/10.3390/math12050656.

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Multi-level inverters are widely employed to generate new energy because of their huge capacity and benefits in sound control performance. One of the critical areas of study for multi-level inverters is control strategy research. In this study, the control strategy for a multi-level inverter—which is frequently employed in HVDC and FACTS systems—is designed. An asymmetrical D.C. voltage source is supplied to create the appropriate output voltage waveform with fewer total harmonic distortions (THDs) at the output voltage and current waveforms. In this work, the pulse width modulation techniques

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28

Zhang, Shaoru, Huixian Li, Yang Liu, et al. "An Improved SPWM Strategy for Effectively Reducing Total Harmonic Distortion." Electronics 13, no. 16 (2024): 3326. http://dx.doi.org/10.3390/electronics13163326.

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In the inverter circuit, the speed at which the MOSFET is impacted by the presence of a parasitic inductor within the printed circuit board (PCB) leads to a delay in the switching process. Furthermore, the parasitic inductor within the circuit can easily form an LC oscillation with the parasitic capacitor of the MOSFET. These two issues result in an inconsistency between the actual output of the MOSFET and the driving signal waveform, leading to distortion in the sinusoidal pulse width modulation (SPWM) waveform and an increase in total harmonic distortion (THD). It is a common practice to mit

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Muhammad, Salman, Basit2 Abdul, Ahmad Aemal, Syed Shah zeeshan, and Alam Kamran. "Modeling of Cascaded H-Bridge Multi-level Inverter Having Low Total Harmonic Distortion by using Equal Phase Distribution Method." International Journal of Engineering Works (ISSN: 2409-2770) 6, no. 03 (2019): 84–89. https://doi.org/10.5281/zenodo.2585862.

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Multi-level inverters’ popularity over traditional inverters can be attributed to its low total harmonic distortion. Multi-level inverter is used both for high and low power applications. This study uses Equal phase method to analyze the total Harmonic distortion of 3, 5, 7 and 9 levels by using Cascaded H-Bridge configuration for such analysis. The total harmonic distortions of three, five, seven and nine levels are analyzed, studied and finally their output is compared through fast Fourier transform. Results are acquired by simulating Cascaded H-Bridge Multi-level inverter with MATLAB/

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Sinvula, Rosalia, Khaled Mohamed Abo-Al-Ez, and Mohamed Tariq Kahn. "A Proposed Harmonic Monitoring System for Large Power Users Considering Harmonic Limits." Energies 13, no. 17 (2020): 4507. http://dx.doi.org/10.3390/en13174507.

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Most power utilities within Southern Africa are faced with the challenges of harmonic distortion due to the high penetration of renewable energy sources (RES) and the use of electronic devices. There is an excessive total harmonic distortion (THD) measured at the point of common coupling (PCC). In this paper, a proposed harmonic monitoring system for large power users (LPUs) is developed. This proposed system considers harmonic limits of the individual and THD of the customers allowed injecting into the network, which should be part of the contractual electricity supply agreement (ESA). Hence,

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31

Arteaga, Johana-Alejandra, Yuri Ulianov López, Jesús Alfonso López, and Johnny Posada. "Decoding Harmonics: Total Harmonic Distortion in Solar Photovoltaic Systems with Integrated Battery Storage." Electricity 6, no. 2 (2025): 28. https://doi.org/10.3390/electricity6020028.

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This paper analyzes the power quality in a 400 kWp grid-connected solar photovoltaic system with storage (BESS), considering standards IEEE Std 519TM, IEEE Std 1159TM, and IEC 61000-4-30. For system analysis, a photovoltaic array model is developed. Neplan-Smarter Tools software is used for model validation, and experimental measurements are performed on the actual photovoltaic system, recording total harmonic distortion (THDi/THDv). A class B power quality monitor was used to measure three-phase electrical variables: current, voltage, power, power factor, and THD. The THD level was generated

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32

Kresna Dharma Yudha, A. A. Gede, Cok Gede Indra Partha, and I. Wayan Sukerayasa. "SIMULASI PENGGUNAAN FILTER AKTIF SHUNT DENGAN KONTROL PI UNTUK MEREDAM TOTAL HARMONIC DISTORTION (THD) PADA GEDUNG DH TEKNIK ELEKTRO UNIVERSITAS UDAYANA." Jurnal SPEKTRUM 10, no. 4 (2023): 143. http://dx.doi.org/10.24843/spektrum.2023.v10.i04.p18.

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Анотація:

Every daily activity requires electrical energy. Electrical energy loads vary. Harmonic distortion is one of the results of current and voltage wave disturbances caused by non-linear loads, such as lamps, computers, and air conditioners, among others. This causes a decrease in the quality of electric power. High resonance disturbances can cause increased harmonics which can reach 4 to 10 times under full charge conditions. One way to overcome harmonic disturbances is by using a harmonic filter. In this study, an active shunt filter with PI control is used to reduce harmonic resonance disturban

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33

Kavitha, R., and Rani Thottungal. "WTHD minimisation in hybrid multilevel inverter using biogeographical based optimisation." Archives of Electrical Engineering 63, no. 2 (2014): 187–96. http://dx.doi.org/10.2478/aee-2014-0015.

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Abstract Harmonic minimisation in hybrid cascaded multilevel inverter involves complex nonlinear transcendental equation with multiple solutions. Hybrid cascaded multilevel can be implemented using reduced switch count when compared to traditional cascaded multilevel inverter topology. In this paper Biogeographical Based Optimisation (BBO) technique is applied to Hybrid multilevel inverter to determine the optimum switching angles with weighted total harmonic distortion (WTHD) as the objective function. Optimisation based on WTHD combines the advantage of both OMTHD (Optimal Minimisation of To

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34

Vasanth, A. V. "Performance Evaluation of A T-Type Multilevel Inverter for Renewable Energy Applications." INTERNATIONAL JOURNAL OF SCIENTIFIC RESEARCH IN ENGINEERING AND MANAGEMENT 09, no. 05 (2025): 1–9. https://doi.org/10.55041/ijsrem49001.

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ABSTRACT: The increasing demand for clean and efficient energy conversion in renewable energy systems has led to the adoption of multilevel inverters, which offers reduced harmonic distortion and improved efficiency. Among various topologies, the T-Type Multilevel Inverter (T-MLI) is gaining attention due to its lower switching losses, reduced component count, and enhanced power quality. However, challenges remain in optimizing its performance metrics, including efficiency, total harmonic distortion (THD), voltage stress, and grid synchronization. This study aims to evaluate the performance of

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35

K., Kandan, Senthilkumar K., and Dhivya K. "TOTAL HARMONIC DISTORTION ANALYSIS OF MATRIX CONVERTER." International Journal of Multidisciplinary Research and Modern Education 2, no. 2 (2016): 174–82. https://doi.org/10.5281/zenodo.154667.

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<em>This paper deals with the validation and design analysis of Matrix converter for variable frequency using mathematical equations. The analysis was done using Venturini modulation algorithm. The PI controller is used for Matrix converter to reduce Total Harmonic Distortion (THD) in the output current. The comparative study is done for open loop and closed loop PI compensation in MATLAB-Simulink. Furthermore, the output waveforms are produced with significant reduction in the Total Harmonic Distortion. </em>

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36

Mirajkar, Nilesh Balkrishna, Rajesh M. Dharaskar, Tousif G. Kazi, Rohit R. Burte, and Rakesh R. Jadhav. "Harmonics: The Distortion in Supplied Waveform – Causes and Remedies." International Journal of Current Microbiology and Applied Sciences 12, no. 5 (2023): 39–44. http://dx.doi.org/10.20546/ijcmas.2023.1205.005.

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Анотація:

In Industrial Distribution Power System, the use of electronic devices such as motor drives, rectifiers or converters, power supplies and power electronic devices has been increased tremendously from last decade. In such a systems, switching operations are more in their regular work. It causes distortion in supplied waveform (Harmonics). This increases the Total Harmonic Distortion (THD) of Industrial Distribution Power System which is considered as the main reason for the power quality problems. This paper includes the sources of the harmonics, effects of the harmonics and the recommendations

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37

Alhaj Omar, Fuad, and Nihat Pamuk. "Analyzing Impacts of Amplitude Modulation Index on Performance Characteristics of Three-Phase Nine-Level Modular Multilevel Converters." Electronics 12, no. 19 (2023): 4114. http://dx.doi.org/10.3390/electronics12194114.

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Modular multilevel converters (MMCs) represent the forefront of power converter technology, with wide-ranging applications across diverse industries. Over recent decades, substantial research and development efforts have been dedicated to enhancing MMCs’ performance. A significant challenge in power conversion processes is the presence of total harmonic distortion (THD) in output waveforms, which can have adverse effects on electrical equipment. In response, extensive studies have been conducted to address THD-related challenges by refining the control and operation of MMCs. This study investi

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38

Santoso, Satria Adji, and Agus Ulinuha. "Harmonic Distortion Analysis Of On-grid Photovoltaic Panel Integration In Load Sharing Scheme." ELKHA 17, no. 1 (2025): 77–83. https://doi.org/10.26418/elkha.v17i1.91311.

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Анотація:

Harmonic analysis is crucial to maintain the system power quality, especially in photovoltaic panels with load sharing scheme. Previous studies have discussed the impact of harmonic distortion on electric power systems in general, but there is still limited discussion on on-grid photovoltaic panel systems without the load-sharing scheme. Harmonic is a distortion phenomenon of current and voltage that is higher than fundamental frequency. The consumption of nonlinear loads contributes to the rising of harmonic distortion that has a bad impact on the system's power quality. This study aims to an

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39

Zygarlicki, Jarosław, and Janusz Mroczka. "Method of testing and correcting signal amplifiers’ transfer function using prony analysis." Metrology and Measurement Systems 19, no. 3 (2012): 489–98. http://dx.doi.org/10.2478/v10178-012-0042-7.

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Abstract This article presents a way of analyzing the transfer function of electronic signal amplifiers. It also describes the possibility of using signal precorrection which improves the parasitic harmonics in the THD (Total Harmonic Distortion) of the amplified signal by correcting linearity of the tested amplifier’s transfer function. The proposed method of analyzing and presenting the transfer function allows to diagnose the causes of generating parasitic harmonics, what makes it a useful tool when designing low distortion amplifier systems, such as e.g. amplifiers in measurement systems.

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40

Aboadla, Ezzidin Hassan, Sheroz Khan, Mohamed H. Habaebi, et al. "A novel optimization harmonic elimination technique for cascaded multilevel inverter." Bulletin of Electrical Engineering and Informatics 8, no. 2 (2019): 405–13. http://dx.doi.org/10.11591/eei.v8i2.1500.

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Анотація:

The main goal of utilizing Selective Harmonic Elimination (SHE) techniques in Multilevel Inverters (MLI) is to produce a high-quality output voltage signal with a minimum Total Harmonic Distortion (THD). By calculating N switching angles, SHE technique can eliminate (N-1) low order odd harmonics of the output voltage waveform. To optimized and obtained these switching angles, N of nonlinear equations should be solved using a numerical method. Modulation index (m) and duty cycle play a big role in selective harmonic elimination technique to obtain a minimum harmonic distortion and desired funda

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41

Ezzidin, Hassan Aboadla, Khan Sheroz, H. Habaebi Mohamed, et al. "A novel optimization harmonic elimination technique for cascaded multilevel inverter." Bulletin of Electrical Engineering and Informatics 8, no. 2 (2019): 405–13. https://doi.org/10.11591/eei.v8i2.1500.

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Анотація:

The main goal of utilizing Selective Harmonic Elimination (SHE) techniques in Multilevel Inverters (MLI) is to produce a high-quality output voltage signal with a minimum Total Harmonic Distortion (THD). By calculating N switching angles, SHE technique can eliminate (N-1) low order odd harmonics of the output voltage waveform. To optimized and obtained these switching angles, N of nonlinear equations should be solved using a numerical method. Modulation index (m) and duty cycle play a big role in selective harmonic elimination technique to obtain a minimum harmonic distortion and desired funda

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42

Ogundele, O.J., O.I. Adebisi, I.A. Adejumobi, and A.A. Alabi. "Comparative Evaluation of Shunt Passive and Shunt Active Power Filters for Harmonic Mitigation in an Electrical Distribution Network." Nigerian Research Journal of Engineering and Environmental Sciences 8, no. 2 (2023): 383–96. https://doi.org/10.5281/zenodo.10441828.

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Анотація:

<em>This study evaluated and compared the performance of shunt passive filter (SPF) and shunt active filter (SAF) in mitigating harmonic distortion in </em><em>an electrical<sup> </sup>distribution network of a typical bottling company, 7-Up Industry Plc in Ibadan, Nigeria. The distribution network layout was modelled and simulated with and without SPF and SAF in MATLAB/Simulink software environment. The voltage and current total harmonic distortions (V<sub>THD</sub>) and<sub> </sub>(I<sub>THD</sub>) were determined. The voltage and current waveforms of the network without filter were distorte

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43

Richa, Gupta. "Enhancement of Power Quality for 15 Level Inverter using Phase Disposition-PWM Technique." International Journal of Innovative Science and Modern Engineering (IJISME) 6, no. 12 (2021): 1–6. https://doi.org/10.35940/ijisme.L1270.1261220.

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Анотація:

With consideration of use of solar, wind and other renewable energy source for industrial applications like electric vehicle drive, train traction and FACTS integration, which demand voltage levels in the range of kilo volts with high power quality, to achieve this high voltage level and high quality of power, a cascaded H-bridge multilevel inverter based topology capable of operating with low harmonic distortion is proposed in the paper. In order to attain low total harmonic distortion (THD), use of phase disposition-PWM technique is proposed in the paper. Giving due attention to both switch

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44

K., Venkateswararao, and Joga Rao G. "THD Minimization in Cascaded H-Bridge Inverter using Optimal Selective Harmonic Elimination." International Journal of Recent Technology and Engineering (IJRTE) 10, no. 2 (2021): 170–74. https://doi.org/10.35940/ijrte.B5984.0710221.

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Анотація:

Cascaded structured multilevel inverters are gaining lot of importance due to their simple structure and easiness in implementation. In this paper, the optimum selective harmonic elimination method is employed for a nine level inverter to suppress the selected lower order harmonic, which reduces the total harmonic distortion of the inverter considerably. The Newton rapson algorithm is employed in finding the switching angles that minimizes certain lower order harmonics. The order of the harmonics that are eliminated are third, fifth, and seventh harmonics. All the simulation results included f

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45

Yatim, M. H., A. Ponniran, and A. N. Kasiran. "Multilevel inverter with MPWM-LFT switching strategy for voltage THD minimization." International Journal of Power Electronics and Drive Systems (IJPEDS) 10, no. 3 (2019): 1461. http://dx.doi.org/10.11591/ijpeds.v10.i3.pp1461-1468.

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<span>This paper presents a proposed modified pulse width modulation – low frequency triangular (MPWM-LFT) switching strategy for minimization of voltage THD with implementation of asymmetric multilevel inverter (AMLI) topology on the reduced number of switching devices (RNSD) circuit structure. Principally, MPWM-LFT able to produce optimum angle of the output voltage level in order to minimize total harmonic distortion (THD). In this study, 5-level reduced number of switching devices circuit structure is selected as a circuit configuration for asymmetric (7-level structure) multilevel i

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46

Siregar, Yulianta, Waleed Khalid Al-Azzawi, Zulkarnaen Pane, Unedo E. Parhusip, and Suherman Suherman. "Study of harmonic distortion from variable speed drive and energy saving lamps." Indonesian Journal of Electrical Engineering and Computer Science 27, no. 2 (2022): 667–77. https://doi.org/10.11591/ijeecs.v27.i2.pp667-677.

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Анотація:

The power electronic component has been widely used in the current industrial era. It has been considered more efficient than the previous devices as it saves more space and uses less power. One example of power electronic components is the variable speed drive for speed regulation of electric motors in the industrial world. Another application of power electronic components is to be used in energy-saving lamps. The use of power electronic components in these two loads generates harmonic distortion and reduces network power quality. In this paper, the authors analyzed the harmonics in both loa

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Chaaira, Aymen, Habib Kraiem, Rabiaa Gamoudi, and Lassaad Sbita. "Comparative Analysis of Bipolar and Unipolar SPWM Techniques in PIC-Based Pure Sine Wave Single-Phase Inverters." Engineering, Technology & Applied Science Research 14, no. 3 (2024): 14395–401. http://dx.doi.org/10.48084/etasr.7150.

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This paper provides a comparative analysis of bipolar versus unipolar Sinusoidal Pulse Width Modulation (SPWM) in DC-AC inverters, focusing on Total Harmonic Distortion (THD) across modulation indices and the latter’s effects on the R-L loads. Using the PIC18F2431 microcontroller for its efficiency, a single-phase inverter accomplished to deliver a high-fidelity sine wave. This study discovered that while both SPWM methods reduce harmonics, the unipolar approach yields more uniform THD reduction and superior performance, particularly noticeable in RL load conditions, where minimal harmonic dis

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48

Westerhold, Sebastian. "THD Measurement with an Oscilloscope and FFT - Easily Calculate the Distortion Factor." Elektor Magazine 49, no. 519 (2023): 52–54. https://doi.org/10.5281/zenodo.11952518.

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Анотація:

Total Harmonic Distortion, or THD for short, is an important measure of the harmonic content of signals in power supply networks and electronic assemblies, such as audio amplifiers. Usually, special measurement devices are necessary for determining the THD. However, if you have a digital oscilloscope with FFT functionality, you can calculate the THD with a little mathematics.

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49

Nurhazwani, Anang, and Mariam Wan Muda Wan. "Analysis of total harmonic distortion in single-phase single-stage grid-connected photovoltaic system." International Journal of Power Electronics and Drive Systems 14, no. 01 (2023): 471~479. https://doi.org/10.11591/ijpeds.v14.i1.pp471-479.

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This study presents the power quality issue mainly focus the effect of total harmonic distortion (THD) on a grid-connected PV system. Firstly, a gridconnected PV system with a single-phase single-stage has been developed to monitor the output values of voltage and current and also its harmonic distortion behaviours. Maximum power point tracking (MPPT) was implemented since it is proven as the first step for THD reduction because MPPT will extract maximum output power, voltage, and current of the PV system without fluctuation which leads to a low THD level. Furthermore, the employment of a good

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50

Dubey, Abhishek. "Integrating Cloud-Based Power Factor Correction with ANFIS-Controlled UPQC for Power Quality Enhancement." INTERNATIONAL JOURNAL OF SCIENTIFIC RESEARCH IN ENGINEERING AND MANAGEMENT 09, no. 06 (2025): 1–9. https://doi.org/10.55041/ijsrem50695.

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Анотація:

Abstract - The increasing presence of nonlinear loads in electrical networks has resulted in power quality degradation, including voltage instability, reactive power losses, and harmonic distortions. Traditional power factor correction (PFC) methods and unified power quality conditioners (UPQC) often rely on static or PI-based controllers, which have limitations in dynamic response and adaptability. This research proposes an integrated approach combining cloud-based automated power factor correction (APFC) and an adaptive neuro-fuzzy inference system (ANFIS)-controlled UPQC to optimize power q

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