scholarly journals An Implementation of a Filter Design Passive LC in Reduce a Current Harmonisa

2018 ◽  
Author(s):  
Andysah Putera Utama Siahaan ◽  
Putri ◽  
Solly Aryza
Keyword(s):  
Filter Design ◽  
Harmonic Distortion ◽  
Current Waveform ◽  
Electrical System ◽  
Nonlinear Loads ◽  
Passive Filter ◽  
Current Harmonic ◽  
Electric Power Quality ◽  
A Current ◽  
Better Than

The problem of electric power quality is a matter of changing the form of voltage,current or frequency that can cause failure of equipment, either utility equipment or consumer property. Components of household equipment there are many nonlinear loads, one of which Mixer. Even a load nonlinear current waveform and voltage is not sinusoidal. Due to the use of household appliances such as mixers, it will cause harmonics problems that can damage the electrical system equipment. This study analyzes the percentage value of harmonics in Mixer and reduces harmonics according to standard. Measurements made before the use of LC passive filter yield total current harmonic distortion value (THDi) is 61.48%, while after passive filter use LC the THDi percentage becomes 23.75%. The order of harmonic current in the 3rd order mixer (IHDi) is 0.4185 A not according to standard, after the use of LC passive filter to 0.088 A and it is in accordance with the desired standard, and with the use of passive filterLC, the power factor value becomes better than 0.75 to 0.98.

scholarly journals 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

2018 ◽  
Vol 5 (1) ◽  
pp. 41
Author(s):  
I Putu Budi Aryawan ◽  
Antonius Ibi Weking ◽  
I Wayan Rinas
Keyword(s):  
Harmonic Distortion ◽  
Active Filter ◽  
Active Filters ◽  
Quality Systems ◽  
Power Losses ◽  
Electrical System ◽  
Nonlinear Loads ◽  
Passive Filter ◽  
Measurement Results ◽  
System Power

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 of active filters causes the current and voltage THD contents to comply with the standard IEEE 519-2014 standards is ?12% and 5%. The use of passive and active filters can reduce THDi content to 8.45% and 3.07%, respectively. While for THDv decreased respectively to 3.68% and 3.45% which already meet the IEEE 519-2014 standards. Power losses decreased respectively to 4.36 kW and 3.86 kW. Installation of active filters is better for reducing THD (Total Harmonics Distortion) and power losses in KA 2085 transformers.

Optimal $C$-Type Passive Filter Based on Minimization of the Voltage Harmonic Distortion for Nonlinear Loads

2012 ◽  
Vol 59 (1) ◽  
pp. 281-289 ◽  
Author(s):  
Shady Hossam Eldeen Abdel Aleem ◽  
Ahmed Faheem Zobaa ◽  
Mohamed Mamdouh Abdel Aziz
Keyword(s):  
Harmonic Distortion ◽  
Nonlinear Loads ◽  
Passive Filter

scholarly journals Analisis Pengaruh Nilai Resistansi untuk Pentanahan Kawat Netral Terhadap THD Arus di Fakultas Teknik Universitas Udayana – Sudirman

2018 ◽  
Vol 5 (2) ◽  
pp. 167
Author(s):  
I G.N Nanda Ramdipa Amerta ◽  
I Wayan Rinas ◽  
I G.N Janardana
Keyword(s):  
System Modeling ◽  
Harmonic Distortion ◽  
Load Condition ◽  
Sine Wave ◽  
Harmonic Load ◽  
Electrical System ◽  
Nonlinear Loads ◽  
The Earth ◽  
Simulation Results ◽  
Resistance Value

Harmonics is a periodic sine wave distortion, due to the operation of nonlinear loads. Har-monics causes current to flow in the neutral wire even though in a balanced load condition, in addition to harmonic load imbalance problems will increase the current flowing in the neutral wire, making it dangerous for the electrical system. This research was using electrical system modeling simulation in MATLAB application by changing the earth resistance value to see the effect of earth resistance value to Total Harmonic Current Distortion (THDi), it is necessary to analyze the effect of resistance value for THDi neutral wire grounding. This study uses the Fast Fourier Transform (FFT) method. THDi simulation results when the conditions of the resistance value is 9 ?, THDi percentage in phase R is 6.30%, Phase S is 2.86%, Phase T is 2.50%. When the earth resistance value is 5 ?, the percentage of THDi decreases with the value in phase R is 6.09%, Fasa S is 2.61%, Fasa T is 2.48%. When the earth resistance value is 2 ?, the THDi percentage in the R phase is 5.85%, Fasa S is 2.09%, Fasa T is 2.22%. Based on the simulation results it is known that the smaller the earth resistance value, the smaller the harmonic distortion in the electrical system.

scholarly journals Harmonic Mitigation in Traction Supply Substation Using Cascaded H-Bridge Converter

2018 ◽  
Vol 9 (4) ◽  
pp. 1745 ◽  
Author(s):  
A. Awalludin ◽  
C. L. Toh
Keyword(s):  
Harmonic Distortion ◽  
Simulation Software ◽  
Regenerative Braking ◽  
Current Waveform ◽  
Passive Filter ◽  
Simulink Simulation ◽  
Ac Current ◽  
Modulation Methods ◽  
Voltage Harmonics

<span lang="EN-US">The conventional three-level inverter has been proposed to act as a recuperating converter in Traction Supply Substation. This converter is mainly used to feed back the regenerative braking energy to the grid. However, passive filter is desired to mitigate the current and voltage harmonics. Therefore, this paper investigates the possibility to use a seven-level Cascaded H-Bridge (CHB) converter as the recuperating converter without additional filtering. The proposed converter is modeled with MATLAB/Simulink simulation software. It is then simulated with two potential modulation schemes, namely Phase-Shifted PWM (PS-PWM) and Phase-Disposition PWM (PD-PWM). The quality of AC waveforms produced by these two modulation methods is compared and studied. The results show that PS-PWM technique is preferable for this application as it offered a clean AC current waveform with less than 5% harmonic distortion. However, a twenty-one-level CHB was predicted to comply with the 8% voltage harmonic requirement.</span>

scholarly journals Simulation of passive filter design to reduce Total Harmonic Distortion (THD) in Energy-Saving Lamps (LHE) and Light Emitting Diodes (LED)

2021 ◽  
Vol 878 (1) ◽  
pp. 012059
Author(s):  
F Susanto ◽  
E M Silalahi ◽  
S Stepanus ◽  
B Widodo ◽  
R Purba
Keyword(s):  
Energy Saving ◽  
Light Emitting Diodes ◽  
Filter Design ◽  
Harmonic Distortion ◽  
Matlab Simulink ◽  
Current Harmonics ◽  
Light Emitting ◽  
Passive Filter ◽  
Linear Load ◽  
Non Linear Load

Abstract This paper discusses the design of a passive filter system for Energy-Saving Lamps (LHE) and Light Emitting Diodes (LED) using the MATLAB Simulink software. This type of lamp is a type of non-linear load that produces harmonics of current and voltage. However, this harmonic problem can be reduced using passive filters. To determine the size of the passive filter components, research was carried out in the form of measurements of power, power factor, voltage, current, THDi and THDv produced by the LHE and LED. The results of these measurements were simulated using MATLAB Simulink to determine the passive filter design that reduces the THD value on the LHE and LED. To reduce the level of current harmonics, a single tuned LC passive filter was designed. The filter, designed to work at a frequency of 50 Hz and is expected to reduce the level of harmonics in the 3rd, 5th, 7th, 9th, 11th harmonic orders so that the THD produced by LHE and LED meets the IEEE 519-2014 standards. The simulation results of single tuned LC passive filter design can reduce THDi by 46.78% from the initial THD of 84.55% so that it becomes 37.77%.

Harmonic Load Mitigation Using the Optimal Double Tuned Passive Filter Technique

2017 ◽  
Vol 6 (2) ◽  
pp. 338
Author(s):  
Muhammad Murtadha Othman ◽  
W Muhammad Faizol Bin W Mustapha ◽  
Amirul Asyraf Mohd Kamaruzaman ◽  
Aainaa Mohd Arriffin ◽  
Ismail Musirin ◽  
...  
Keyword(s):  
Harmonic Distortion ◽  
Multiple Integral ◽  
Harmonic Load ◽  
Optimal Parameters ◽  
Electrical System ◽  
Passive Filter ◽  
Electrical Devices ◽  
Electrical Components ◽  
System Frequency ◽  
Harmonic Problem

Harmonic is one of the power quality disturbances customarily imminent in an unbalanced electrical system. Harmonic represents as the multiple integral of fundamental frequency of voltage and current inflicting towards the shifting in system frequency causing to a disruptive operation of electrical devices. This paper investigates on the performance of passive filter intrinsically by utilizing the inductor and capacitor electrical components to mitigate harmonic problem emanating from an unbalanced electrical system. In particular, explication in this paper will focus on the optimal parameters specification for the double tuned passive filter that used to overcome the phenomenon of harmonic issue. The two case studies constituting with different number of harmonic orders injected in a system were introduced to distinguish effectiveness of double tuned passive filter in solving the aforesaid problems. The parameters configuration of the passive filter are automatically tuned by the MATLAB® software to reduce the total harmonic distortion incurred in a system designed under the Simulink® software.

Comparison of Operational Losses under Rated and Nonlinear Loads for 2 kVA Three-Phase Three Legged Dry Type Power Transformer

2015 ◽  
Vol 793 ◽  
pp. 309-314
Author(s):  
Muhammad Mokhzaini Azizan ◽  
Baharuddin Ismail ◽  
Syafrudin Masri ◽  
Mohd Saufi Ahmad ◽  
Mohd Annuar Mohd Isa ◽  
...  
Keyword(s):  
Power Transformer ◽  
Experimental Results ◽  
Current Waveform ◽  
Nonlinear Loads ◽  
Nonlinear Load ◽  
Current Harmonic ◽  
Three Phase ◽  
Harmonic Source ◽  
Type Power

This paper produces experimental results comparing operational loss of a power transformer under rated and nonlinear load. A 2kVA three phase three legged dry type power transformer is primarily designed for rated loss; however it is operated with a nonlinear load. Three phase rectifier with variable capacitors is the selected current harmonic source and the distortion at current waveform is controlled by the capacitance values. Initially the operation losses under rated load is measured and then followed with measurement with nonlinear load. At the end of this paper, both type of operation losses is compared and differentiated.

scholarly journals Dual Two-Level Voltage Source Inverter Virtual Inertia Emulation: A Comparative Study

Energies ◽  
2021 ◽  
Vol 14 (4) ◽  
pp. 1160
Author(s):  
Mohammad Ali Dashtaki ◽  
Hamed Nafisi ◽  
Amir Khorsandi ◽  
Mojgan Hojabri ◽  
Edris Pouresmaeil
Keyword(s):  
Harmonic Distortion ◽  
Synchronous Generator ◽  
Voltage Source ◽  
Small Signal ◽  
Voltage Source Inverter ◽  
Nonlinear Loads ◽  
Virtual Inertia ◽  
The Stability ◽  
Stability Enhancement ◽  
Oscillation Damping

In this paper, the virtual synchronous generator (VSG) concept is utilized in the controller of the grid-connected dual two-level voltage source inverter (DTL VSI). First, the topology of the VSG and the DTL VSI are presented. Then, the state-space equations of the DTL VSI and the grid-connected two-level voltage source inverter (TL VSI), regarding the presence of the phase-locked loop (PLL) and the VSG, are given. Next, the small-signal modeling of the DTL VSI and the TL VSI is realized. Eventually, the stability enhancement in the DTL VSI compared with the TL VSI is demonstrated. In the TL VSI, large values of virtual inertia could result in oscillations in the power system. However, the ability of the DTL VSI in damping oscillations is deduced. Furthermore, in the presence of nonlinear loads, the potentiality of the DTL VSI in reducing grid current Total Harmonic Distortion (THD) is evaluated. Finally, by using a proper reference current command signal, the abilities of the DTL VSI and the TL VSI in supplying nonlinear loads and providing virtual inertia are assessed simultaneously. The simulation results prove the advantages of the DTL VSI compared with the TL VSI in virtual inertia emulation and oscillation damping, which are realized by small-signal analysis.

Sign in / Sign up

Export Citation Format

Share Document