scholarly journals Power Quality Improvement using DSTATCOM for Power System

2020 ◽  
Vol 8 (5) ◽  
pp. 385-388
Keyword(s):  
Power System ◽  
Power Efficiency ◽  
Reactive Power ◽  
Physical Phenomenon ◽  
Current Control ◽  
Inductive Load ◽  
Hysteresis Current Control ◽  
Management Scheme ◽  
Power Quality Improvement ◽  
Reference Current Generation

Reactive power is created once this undulation is out of point in time with the voltage undulation thanks to inductance or capacitance load. Amp lag volt with associate angle for inductive load, lead volt for capacitor. The KVAR of the system should be compensated in order to smooth running of power system. There are various types of loads i.e. transformers, furnaces, induction motors etc. These types of loads require reactive power to sustain flux because this type of appliance major depends on flux density. Based on reactive power efficiency is regulated and efficiency of the system is incurred. DSTATCOM is a device which manages reactive power in a system. This device had quick management. Distribution synchronous compensator performance is carried out using Algorithm rule. This paper explains learning of reference current generation technique from decoupled amp management i. e p-q theory is based on voltage compensation using converter is utilized in this paper. Reference current developed by management topology are traced by compensator during physical phenomenon band management scheme. STATCOM module with HCC( Hysteresis current control ) square measured , generated and simulated in Matlab software using simulation . DSTATCOM is very efficient in controlling reactive power.

Hysteresis Current Control Technique Based on Space Vector Modulation for Active Power Filter

2013 ◽  
Vol 385-386 ◽  
pp. 1224-1228
Author(s):  
Yun Liang Wang ◽  
Qi Liang Guo
Keyword(s):  
Reactive Power ◽  
Active Power Filter ◽  
Active Power ◽  
Current Control ◽  
Control Technique ◽  
Space Vector Modulation ◽  
Space Vector ◽  
Hysteresis Current Control ◽  
Power Filter ◽  
Vector Modulation

In this paper, the hysteresis current control (HCC) technique based on space vector modulation (SVM) for active power filter (APF) is proposed. The switching control algorithms of the HCC based SVM manage to generate compensated current according to the reference current. Harmonics extraction is calculated for the power compensation based on the instantaneous active and reactive power theorem in time domain. A closed loop control system is carried out and the APF manages to generate better compensated harmonics currents to the power grid.

Research on Chain SVG Direct Current Control Simulation Based on PSCAD

2014 ◽  
Vol 644-650 ◽  
pp. 3866-3869
Author(s):  
Cun Guo Liu ◽  
Hui Hao ◽  
Zhi Qiang Zhang ◽  
Xin Hua Wang ◽  
Xiao Le Li ◽  
...  
Keyword(s):  
Direct Current ◽  
Reactive Power ◽  
Current Control ◽  
Simulation Software ◽  
Control Technology ◽  
Inductive Load ◽  
Fast Tracking ◽  
Reactive Compensation ◽  
Current Controller ◽  
Direct Current Control

SVG is a device parallel on the power grid for dynamic reactive power compensation, is a product of best performance and mature technology in the third generation dynamic reactive compensation technology so far. Thanks to power unit module series structure and PWM technology, compared with multiple SVG, chain SVG has high capacity, low loss, simple maintenance. But more complicated in control, indirect current control technology and direct current control technology are adopted. This paper utilizes PSCAD simulation software to build a chain SVG direct current controller model according to mathematical model of the chain SVG, simulates SVG compensation with inductive load and capacitive load, so as to verify advantages of fast tracking speed and stable control of direct current controller.

scholarly journals Power Quality Enhancement in Grid Connected PV Systems using High Step Up DC-DC Converter

2017 ◽  
Vol 7 (2) ◽  
pp. 720
Author(s):  
V S Prasadarao K ◽  
K V Krishna Rao ◽  
P Bala Koteswara Rao ◽  
T. Abishai
Keyword(s):  
Power Quality ◽  
Fossil Fuels ◽  
Reactive Power ◽  
Neutral Current ◽  
Renewable Energy Sources ◽  
Current Control ◽  
Control Technique ◽  
Pv System ◽  
Hysteresis Current Control ◽  
Switching Losses

Renewable energy sources (RES) are gaining more importance in the present scenario due to the depletion of fossil fuels and increasing power demand. Solar energy is the one of the most promising as it is clean and easily available source. The voltage obtained from the PV system is low. This voltage is increased by high step up dc-dc converter which uses only one switch leads to low switching losses and hence the efficiency of this converter is high. To get the good response this converter is operated in closed loop manner. Integration of PV system with existing grid has so many issues like distorted voltage, current and reactive power control etc. This paper presents a four leg inverter which works on hysteresis current control technique to address the power quality issues like reactive power compensation, balanced load currents and compensation of neutral current. The switching to the inverter is designed in such a way that it supplies the extra current to stabilise the current of the grid that is being supplied to the loads. Finally, the proposed technique is validated by using mat lab/Simulink software and corresponding results are presented in this paper.

Incorporation of a Redox Flow Battery in a Wind-Diesel Power System for Simultaneous Frequency and Voltage Control

2008 ◽  
Vol 32 (2) ◽  
pp. 179-195 ◽  
Author(s):  
Shameem Ahmad Lone ◽  
Mairajud-Din Mufti ◽  
Shiekh Javed Iqbal
Keyword(s):  
Power System ◽  
Reactive Power ◽  
Current Control ◽  
Voltage Source ◽  
Frequency Regulation ◽  
Voltage Source Converter ◽  
Redox Flow Battery ◽  
Flow Battery ◽  
Energy Storage Devices ◽  
Battery System

Energy storage devices are required for power quality maintenance in stand alone power systems like wind-diesel ones. A redox flow battery system has many virtues which make its integration with a wind-diesel power system attractive. This paper proposes the integration of a redox flow battery system with a typical multi-machine wind-diesel power system for simultaneous voltage and frequency regulation. The redox flow battery is connected to wind park bus through a current controlled voltage source converter based on hysterisis current control. Keeping in view the non-linear and time varying nature of the hybrid wind-diesel-redox flow battery system, neuro-adaptive control is proposed for active/reactive power modulation of the redox flow battery.

scholarly journals Implement the Harmonic Search Algorithm with Optimum Location of Capacitors Sizing and Dispatchable DGs to Control the Reactive Power on Interconnected Bus System

2018 ◽  
Vol 7 (3) ◽  
pp. 149
Author(s):  
M. Suneetha ◽  
R.Srinivasa Rao ◽  
B. Subramanyam
Keyword(s):  
Power System ◽  
Reactive Power ◽  
Search Algorithm ◽  
Distribution Network ◽  
System Control ◽  
System Operation ◽  
Inductive Load ◽  
Power System Operation ◽  
Real Power ◽  
Power System Control

<p>Power system is combination of generation, transmission and Distribution Network. In modern trends power system operation is very difficulty due to energy storage elements, and variable inductive load. In power system, control the reactive power is essential to maintain the safe and more reliability of power system operation. In this paper, to organize the real power and reactive power by optimizing and sizing of capacitors and Dispatchable  Distribution generators in a distribution network with help of Harmonic Search Algorithm. The constraints of power system like voltage, real power and reactive and branch current carrying capacity are included in the evaluation of the objective function. To validate  planned development network an IEEE 30 bus investigation system is considered.</p>

scholarly journals Fuzzy hysteresis current control of five phase permanent magnet motor under open-circuit faults

2018 ◽  
Vol 7 (2.28) ◽  
pp. 369
Author(s):  
Mekri Fatiha ◽  
Oum El Fadhel Loubaba Bekri
Keyword(s):  
Open Circuit ◽  
Current Control ◽  
Switching Frequency ◽  
Permanent Magnet Motor ◽  
Torque Density ◽  
Hysteresis Current Control ◽  
Current Controller ◽  
Reference Current Generation ◽  
Two Phases ◽  
Hysteresis Control

This paper presents a new current controller of a PWM of multiphase PM machines with a fuzzy logic band. With this kind of system it is possible to determine optimal currents references which maximize the torque density of the system when one or two phases are open circuited. We propose in this paper to combine this optimal reference current generation with fuzzy hysteresis control band. This solution allows a good tracking of these unconventional reference currents with a fixed switching frequency for the VSI. The study carried on simulation via software MatLab/Simulink.  

Design and Digital Implementation of Constant Frequency Hysteresis Current Controller for Three-Phase Voltage Source Inverter Using TMS320F2812

2014 ◽  
Vol 15 (1) ◽  
pp. 13-23 ◽  
Author(s):  
D. Kalyanraj ◽  
S. Lenin Prakash
Keyword(s):  
Current Control ◽  
Control Technique ◽  
Voltage Source ◽  
Phase Voltage ◽  
Inductive Load ◽  
Constant Frequency ◽  
Digital Implementation ◽  
Hysteresis Current Control ◽  
Current Controller ◽  
Three Phase

Abstract A constant frequency hysteresis current control technique for a three-phase voltage source inverter (VSI) has been developed for AC drives, power quality and renewable energy applications. This paper presents a digital implementation of a constant frequency hysteresis current control technique for a three-phase VSI feeding an inductive load, using digital signal controller TMS320F2812. The limitations of variable frequency hysteresis control have been discussed and overcoming these limitations by means of digital implementation has been proposed. The complete design procedure of the proposed technique has been presented with an illustrative example. The three-phase VSI feeding an inductive load has also been simulated by using MATLAB and the simulation results have been presented. The hardware results of hysteresis current controlled three-phase VSI feeding an inductive load have been presented. Also the performance analysis of the hysteresis current controller has been presented. Operation of this controller has also been explained with a help of phase plane trajectory of hysteresis controller.

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 Power Quality Improvement of Isolated Power System Network using UPQC

2020 ◽  
Vol 8 (5) ◽  
pp. 1962-1969
Keyword(s):  
Quality Improvement ◽  
Power System ◽  
Power Quality ◽  
Reactive Power ◽  
Harmonic Distortion ◽  
Unit Vector ◽  
Electrical Network ◽  
Alphabetical Order ◽  
Power Quality Improvement

The Unified Power Quality Controller (UPQC) is the Custom Power device designed for improving the power quality of the electrical network. In this paper, we proposed UPQC design for an isolated power system network to attend both voltage and current distortion by using Unit Vector template algorithm and Instantaneous Reactive Power theory. Also UPQC is designed for the hybrid generation with Hysteresis control algorithm. The power quality improvement of the power system network is the main aim . The performance analysis is done by comparing its Total Harmonic Distortion (THD). Based on its THD the quality of the power at the “Point of common coupling (PCC)”with and without compensator is quantified in this paper. Keywords : About four key words or phrases in alphabetical order, separated by commas.

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