REDUKSI HARMONISA MENGGUNAKAN TAPIS DAYA AKTIF BERBASIS SYNCHROUNOUS REFERENCE FRAME DQ PADA SISTEM DAYA TIGA FASA

2021 ◽  
Vol 26 (1) ◽  
pp. 13-24
Author(s):  
Setiyono ◽  
Bambang Dwinanto
Keyword(s):  
Reference Frame ◽  
Harmonic Distortion ◽  
Current Control ◽  
Total Harmonic Distortion ◽  
Matlab Simulink

Mutu listrik yang bagus memiliki ciri berbentuk sinusoida, kontinu, dan handal terhadap gangguan. Penggunaan perangkat elektronika daya dapat menurunkan kualitas sistem tenaga. Penyebabnya adalah arus harmonisa pada sisi beban mengintervensi arus listrik pada sisi sumber pasokan daya. Arus harmonisa ini menjadi masalah utama dalam sistem distribusi listrik sehingga diperlukan langkah antisipasi untuk meredam kehadiran harmonisa di dalam sistem tenaga. Penelitian ini bertujuan menyajikan tapis daya aktif paralel untuk menurunkan Total harmonic Distortion (THD) pada sistem tenaga listrik melalui sebuah pemodelan simulasi. Beberapa peneliti telah melakukan riset dengan hasil yang masih bervariasi dalam menurunkan THD, dan pada umumnya nilai THD yang diperoleh berkisar pada nilai 5%. Pada penelitian ini, untuk menurunkan THD secara teknis adalah dengan menyuntikan arus kompensasi ke jala menggunakan metode synchronous d-q reference. Bentuk gelombang arus kompensasi ini dibuat sama dengan arus harmonisa beban namun berbeda fasa 1800. Histerisis Current Control digunakan untuk membangun pulsa penyalaan rangkaian Voltage Spurce Inverter. Pemodelan sistem tapis daya aktif paralel dibangun menggunakan tools Matlab Simulink. Hasil simulasi memperlihatkan nilai indeks THD sebelum diinjeksi sebesar 30,67%, dan setelah diinjeksi turun menjadi 2,37%. Nilai THD ini sesuai dengan standar IEEE 519 sehingga dapat disimpulkan bahwa pemodelan ini layak dibangun untuk di implementasikan pada sebuah sistem tenaga.

scholarly journals Voltage regulation and phase quantity increase of two high-power 12-phase rectifiers

2019 ◽  
Vol 10 (3) ◽  
pp. 1454
Author(s):  
Valery Safonov ◽  
Mikhail Dziuba
Keyword(s):  
High Power ◽  
Harmonic Distortion ◽  
Voltage Regulation ◽  
Total Harmonic Distortion ◽  
New Method ◽  
Matlab Simulink ◽  
Electromagnetic Processes ◽  
The Common

In this article, we present a new method of simultaneously increasing the phase quantity and regulating the rectified voltage for two 12-phase high-power rectifiers operating at a common load. Self-excited voltage inverters separately form the necessary voltages for voltage regulation and for increasing the phase quantity. The formed voltage is input with the help of a common booster transformer. Separating the inverters functions and using the common booster transformer makes it possible to reduce the installed power of the equipment significantly compared to similar circuits when the regulation range of the rectified voltage is up to 5%. Calculations show that the inverter power for increasing the phase quantity is about 3% of the rectifier power. The circuit was modeled in MatLab/Simulink and the electromagnetic processes in the rectifier were studied. The proposed method makes it possible to reduce the total harmonic distortion of the network current and the pulsation coefficient of the rectified voltage to the values typical for 24-phase rectifiers.

scholarly journals Vector Control Algorithm Based on Different Current Control Switching Techniques for Ac Motor Drives

2020 ◽  
Vol 152 ◽  
pp. 03009 ◽  
Author(s):  
Muhammad Usama ◽  
Jaehong Kim
Keyword(s):  
Vector Control ◽  
Harmonic Distortion ◽  
Speed Control ◽  
Current Control ◽  
Motor Drives ◽  
Total Harmonic Distortion ◽  
Motor Drive ◽  
Ac Motor ◽  
Ac Motor Drives ◽  
Speed Response

A comparative analysis of vector control scheme based on different current control switching pulses (HC, SPWM, DPWM and SVPWM) for the speed response of motor drive is analysed in this paper. The control system using different switching techniques, are comparatively simulated and analysed. Ac motor drives are progressively used in high-performance application industries due to small size, efficient performance, robust to torque response and high power to size ratio. A mathematical model of ac motor drives is presented in order to explain the numerical theory of motor drives. The vector control technique is utilized for efficient speed control of ac motor drive based on independent torque and air gap flux control. The study compares the total harmonic distortion contents of phase currents of ac motor drive and speed response in each case. The simulation result shows that total harmonic distortion across the phase current in SVPWM is less as compared to other switching techniques while the rise time in speed response across SVPWM technique is faster as compared to other switching methods. The simulation result of ac motor drives speed control is demonstrated in Matlab/Simulink 2018b.

scholarly journals Compare the Symmetric Hybridized Cascaded MLI with 17 levels with the Asymmetric Switched Capacitor MLI Topologies for Dynamic Loading

2021 ◽  
Vol 9 (VII) ◽  
pp. 1951-1958
Author(s):  
Jayesh B. Patil
Keyword(s):  
Renewable Energy ◽  
Dynamic Loading ◽  
Output Voltage ◽  
Harmonic Distortion ◽  
Multilevel Inverter ◽  
Total Harmonic Distortion ◽  
Switched Capacitor ◽  
Matlab Simulink ◽  
Energy Applications ◽  
Load Disturbance

This article builds a symmetric hybridized cascaded a switching capacitor unit in a multilayer inverter and compares it to For 17 level inverters, A switched capacitor unit is utilized with an asymmetric multilevel inverter. In the symmetric hybridized multilevel inverter design, a In the midst of a dual-input dc source, there is a bi-directional switch is utilized to create a modified H-bridge inverter with a five-level output voltage instead of three. In the proposed scenario, In an asymmetric multilevel inverter, the switched capacitor unit substitutes the dc sources. which enlarges By a factor of two, The output voltage has been increased. and the voltage levels at the loads are increased by a factor of two. MATLAB-SIMULINK was used to verify the suggested topology using the staircase modulation approach. The findings show that multilayer inverter topologies with low total harmonic distortion, fewer switches, With greater levels of output voltage are better stable during load disturbance circumstances, making them ideal for renewable energy applications.

scholarly journals Modeling and control of 41-level inverter using best switching angles calculation method

2020 ◽  
Vol 9 (2) ◽  
pp. 153
Author(s):  
Alla Eddine Toubal Maamar ◽  
M'hamed Helaimi ◽  
Rachid Taleb ◽  
Abdelatif Gadoum
Keyword(s):  
Calculation Method ◽  
Single Phase ◽  
Harmonic Distortion ◽  
Paper Analysis ◽  
Total Harmonic Distortion ◽  
Matlab Simulink ◽  
Modeling And Control ◽  
Half Height ◽  
And Control ◽  
Fft Analysis

<div data-canvas-width="257.02725257004636">In this paper, analysis and modeling of a single-phase H-bridge forty-one level inverter are con sidered. The control of proposed inverter by equal-phase and half-height methods is implemented. MATLAB/Simulink environments are used to simulate the model an d show obtained results of waveforms with FFT analysis. Eventually, the total harmonic distortion obtained for each level with the two methods is presented, comparatively, for a comparison.</div>

scholarly journals Design And Implementation of Two-Phase Interleaved Voltage Source Inverter For PV Applications

2019 ◽  
Vol 20 (2) ◽  
pp. 127-141
Author(s):  
HARIKA SRIDHARAN ◽  
Seyezhai Ramalingam
Keyword(s):  
Power Quality ◽  
Harmonic Distortion ◽  
Total Harmonic Distortion ◽  
Voltage Source ◽  
Voltage Source Inverter ◽  
Two Phase ◽  
Distortion Factor ◽  
Matlab Simulink ◽  
Pv Panel ◽  
Current Ripple

ABSTRACT:The design of a voltage source inverter is challenging for PV-grid connected systems due to power quality issues. To improve the power quality,a two-phase interleaved voltage source inverter (IVSI) is proposed in this paper. IVSI phase shifts two voltage source inerters connected in parallel. The inverter topology is interfaced with a 40W PV panel employing a multiple maxima search (MMS) MPPT algorithm. This algorithm results in higher tracking efficiency compared to existing methods. Modelling of the PV with MPPT and the circuit configuration of the interleaved inverter is simulated in MATLAB/SIMULINK. The switches in the IVSI is controlled by employing a unipolar PWM technique. The performance of the IVSI is investigated in terms of weighted total harmonic distortion (WTHD), distortion factor (DF), harmonic spread factor (HSF), and inductor current ripple and compared with classical VSI. From the analysis, it is inferred that the proposed inverter results in reduced total harmonic distortion(THD) and decreased inductor current ripple thereby producing a high-quality output. The hardware model of the two-phase IVSI is developed and interfaced with PV where gating pulses are generated in FPGA. The simulation results are validated experimentally. ABSTRAK: Rekaan pembalik sumber voltan adalah mencabar pada sistem gabungan grid-PV disebabkan isu kualiti tenaga. Bagi memperbaharui kualiti tenaga, pembalik sumber voltan antara lembar dua-fasa (IVSI) telah dicadangkan dalam kajian ini. Anjakan fasa IVSI pembalik sumber voltan dua-fasa telah dihubungkan secara selari. Topologi pembalik telah diantaramukakan dengan 40W panel PV dengan mengunakan carian maksima berganda (MMS) algoritma MPPT. Hasil algoritma menunjukkan lebih tinggi keberkesanan dibandingkan dengan kaedah sedia ada. PV model dengan MPPT dan konfigurasi litar pembalik antaramuka telah disimulasi menggunakan MATLAB/SIMULINK. Suis dalam IVSI dikawal dengan menggunakan teknik PWM unipolar. Dapatan kajian ke atas IVSI adalah berdasarkan berat pengherotan total harmoni (WTHD), faktor pengherotan (DF), faktor sebaran harmoni (HSF), getaran arus pembalik dan dibandingkan dengan kaedah klasik VSI. Analisis menunjukkan kesimpulan dapatan kajian ke atas pembalik yang dicadangkan telah berkurang jumlah pengherotan harmoni (THD) dan getaran arus pembalik telah berkurang, oleh itu menghasilkan hasil akhir yang berkualiti tinggi. Model perkakasan IVSI dua-fasa telah dibangunkan dan diantaramukakan dengan PV di mana signal pengegetan dihasilkan dalam FPGA. Dapatan hasil simulasi telah disahkan secara eksperimen.

Analysis of Binary DC Source Reduced Switch 7-level Inverter

2015 ◽  
Vol 6 (1) ◽  
pp. 70
Author(s):  
V. Arun ◽  
B. Shanthi ◽  
M. Arumugam
Keyword(s):  
Pulse Width ◽  
Output Voltage ◽  
Harmonic Distortion ◽  
Total Harmonic Distortion ◽  
Crest Factor ◽  
Matlab Simulink ◽  
Performance Factors ◽  
Low Distortion

This paper proposes a binary DC source reduced switch 7-level inverter. Binary DC source reduced switch inverter is triggered by the Unipolar PWM strategy having sinusoidal and trapezoidal reference with triangular carriers. These Pulse Width Modulating (PWM) strategies include Phase Disposition (PD), Alternate Phase Opposition Disposition (APOD), Carrier Overlapping (CO). Performance factors like Total Harmonic Distortion (THD), VRMS (fundamental) and crest factor are evaluated for various modulation indices. Simulations were performed using MATLAB-SIMULINK. It is observed that UPDPWM strategy with trapezoidal reference provides output with relatively low distortion and UCOPWM strategy with trapezoidal reference provides relatively higher fundamental RMS output voltage.

scholarly journals A novel control strategy for power quality improvement in grid-connected solar photovoltaic system

2019 ◽  
Vol 15 (3) ◽  
pp. 1264
Author(s):  
Pankaj Gakhar ◽  
Manoj Gupta
Keyword(s):  
Quality Improvement ◽  
Power Quality ◽  
Control Strategy ◽  
Reactive Power ◽  
Harmonic Distortion ◽  
Pi Controller ◽  
Current Control ◽  
Total Harmonic Distortion ◽  
Solar Photovoltaic ◽  
Power Quality Improvement

<p>In this paper, a novel and dynamic, current control based inverter control strategy has been used for energy optimization and power quality improvement in a grid-connected solar photovoltaic plant using a PI controller. The output of the plant is delivered to the grid passing through a boost converter controlled by an MPPT controller and an inverter. The control strategy proposed offers the flexibility to keep control of active as well as reactive power being injected straight into the grid and also helps in mitigating the total harmonic distortion levels. Also, the effect of the conventional PI controller and PI controller optimized through Genetic Algorithm has been compared. The GA-PI controller has been found effective in reducing the Total Harmonic Distortion in the current injected in the grid. The effectiveness of the work has been observed by using a MATLAB/SIMULINK environment.</p>

scholarly journals Investigating the Performances of Direct Torque and Flux Control for Dual Stator Induction Motor with Direct and Indirect Matrix Converter

2019 ◽  
Vol 64 (1) ◽  
pp. 97-105
Author(s):  
Yahia Moati ◽  
Katia Kouzi
Keyword(s):  
Induction Motor ◽  
High Performance ◽  
Direct Torque Control ◽  
Harmonic Distortion ◽  
Matrix Converter ◽  
Operating Conditions ◽  
Torque Control ◽  
Total Harmonic Distortion ◽  
Input Current ◽  
Matlab Simulink

This work investigates the performances of Direct Torque Control (DTC) of Dual Stator Induction Motor (DSIM) powered by two types of Matrix Converter (MC), namely the direct and indirect MC. To this end, the design of DTC with conventional Direct Matrix Converter (DMC) is firstly presented. Then, in order to illustrate the main feature of Indirect Matrix Converter (IMC) in terms of the output voltages and input currents waveforms, the full steps of IMC are well explained. To discuss the performance of each scheme, both techniques are simulated in the Matlab / Simulink environment for a 4.5 kW DSIM at different operating conditions. The obtained results show that the IMC provides high performance in torque and flux at different conditions and while minimization the Total Harmonic Distortion (THD) in the input current compared by the conventional DMC.

scholarly journals THD Analysis of a Seven, Nine, and Eleven Level Cascaded H-Bridge Multilevel Inverter for Different Loads

2020 ◽  
Vol 14 (4) ◽  
pp. 514-523
Author(s):  
Manoj Kumar Sahu ◽  
Madhusmita Biswal ◽  
Jagan Mohana Rao Malla
Keyword(s):  
Harmonic Distortion ◽  
Harmonic Spectrum ◽  
Multilevel Inverter ◽  
Total Harmonic Distortion ◽  
Analytical Analysis ◽  
Matlab Simulink ◽  
Multilevel Inverters ◽  
Proposed Model ◽  
Multicarrier Pwm

A multilevel inverter is implemented for generating the required staircase AC voltage of output from various steps of voltages of DC sources. The multilevel inverter gives a better harmonic spectrum and a compatible quality of output. This article delves into an analytical analysis of the total harmonic distortion (THD) of different multilevel inverters which employ a multicarrier PWM technique. This technique is implemented for operating the switches at their respective angle of conduction. This paper deals with various cascaded H-Bridge multilevel inverters (CMI) with various loads that are modelled by implementing the MATLAB/Simulink platform. The output gives a better result of the proposed model in terms that it is helpful towards reducing the THD and the losses of switching.

scholarly journals Synchronous Reference Frame Repetitive Control of a Single-Phase Three-Level Dual-Buck Photovoltaic Inverter

Electronics ◽  
2018 ◽  
Vol 7 (10) ◽  
pp. 226 ◽  
Author(s):  
Jung-Yong Lee ◽  
Younghoon Cho
Keyword(s):  
Reference Frame ◽  
Control Strategy ◽  
Single Phase ◽  
Harmonic Distortion ◽  
Current Control ◽  
Output Current ◽  
Pv Inverter ◽  
Synchronous Reference Frame ◽  
Conduction Mode ◽  
Repetitive Controller

This paper proposes a synchronous reference frame (SRF) control strategy for a single-phase, three-level, dual-buck photovoltaic (PV) inverter. The concept of virtual d-q transformation is adapted to the current control of the inverter, and the repetitive controller is implemented in the SRF. With the proposed control strategy, the memory allocation quantity for the repetitive controller is decreased and the capability of the current reference tracking is maximized. Thus, the proposed method significantly reduces the total harmonic distortion (THD) of the output current in both the continuous conduction mode (CCM) and the discontinuous conduction mode (DCM). In addition, the distortion of the output current is mostly composed of odd harmonics. Odd harmonic expressed to the even harmonic in SRF can be calculated using Park’s transformation. Therefore, a repetitive controller can improve dynamics by considering only even harmonic components in SRF rather than including all harmonics. The simulation and the experimental results verify the effectiveness of the proposed control strategy. The proposed method not only reduces the THD of the output current in both the CCM operation and the DCM operation, but also improves the dynamics of the current controller.

Sign in / Sign up

Export Citation Format

Share Document