Experimental Investigation on a Hybrid Series Active Power Compensator to Improve Power Quality of Typical Households

2016 ◽  
pp. 1-1 ◽  
Author(s):  
Alireza Javadi ◽  
Abdelhamid Hamadi ◽  
Lyne Woodward ◽  
Kamal Al-Haddad
Keyword(s):  
Experimental Investigation ◽  
Power Quality ◽  
Active Power

Micro-Grid Power Quality Management

2015 ◽  
Vol 713-715 ◽  
pp. 1335-1342
Author(s):  
Zhi Qiang Gao ◽  
Hua Yu Chu ◽  
Liang Meng ◽  
Si Qing Sheng ◽  
Zhong Ji Sun ◽  
...  
Keyword(s):  
Power Quality ◽  
Control Method ◽  
Active Power Filter ◽  
Active Power ◽  
Grid Technology ◽  
Power Filter ◽  
Micro Grid ◽  
Simulation Results ◽  
The Impact

As distribute power generation and micro-grid technology develops, more and more researchers attach importance to the problems of power quality in micro-grid, especially the problem of harmonic. This paper describes the impact and harm harmonic has on the power quality of the power grid. It introduces a revised method of managing micro-grid harmonics which uses an active power filter (APF), and the control method of APF is different from the traditional one. It also establishes the simulation model of micro-grid, analyze the simulation results and experiment in actual micro-grid to verify the effectiveness of the proposed method.

Power Quality Enhancement Using a Novel Hybrid Active Power Filter Device Under Nonlinear Loads

2012 ◽  
Vol 516-517 ◽  
pp. 1419-1424
Author(s):  
Wei Jun Yun ◽  
Gang Yao ◽  
Li Dan Zhou ◽  
Chen Chen ◽  
Jun Min Pan
Keyword(s):  
Power Quality ◽  
Power Distribution ◽  
Distribution Systems ◽  
Active Power Filter ◽  
Active Power ◽  
Power Distribution Systems ◽  
Nonlinear Loads ◽  
Power Filter ◽  
Hybrid Active Power Filter

Nonlinear loads generate a large amount of characteristic harmonics , deteriorate the power quality of power distribution systems in Advanced manufacturing enterprises. In this paper a novel hybrid active power filter is proposed which consists of a series thyristor switched filter (TSF) and small rated shunt active power filter(APF). TSF is tuned at fifth and seventh order harmonic frequencies. Consequently APF compensates for third and other order harmonics, unbalance current and reactive power. A new control method based on PHC strategy is presented for APF. The device has already got an application in one of the transformer substations of a automobile factory. It’s revealed that the proposed device can improve the power factor , reduce the harmonics injection and enhancement power quality of the power distribution systems.

Distributed Generation Inverter as APF in Dual APF DG interfacing Scheme

2017 ◽  
Vol 8 (3) ◽  
pp. 1441
Author(s):  
Yadiki Rajendra Babu ◽  
C. Srinivasa Rao
Keyword(s):  
Power Quality ◽  
Distributed Generation ◽  
Active Power ◽  
Harmonic Compensation ◽  
Active Power Filters ◽  
Power Filters ◽  
Electrical Engineers ◽  
Quality Issues ◽  
Compensating Devices

<span>Power quality issues are the most concerned area for electrical engineers in these modern days due to indusrtrialization and advancements in electronics. Harmonics are one of the power quality issues that deteriorated the quality of source components delivered to load. Active power filters (APF) are the compensating devices used to mitigate harmonics. Distributed generation (DG) became a trendline due to economical, technical and environmental reasons. This paper presents the harmonic compensation using dual APF sharing compensating signals while active power is fed from distributed generation to grid. DG inverter acts as an interface between DG system and grid to feed active power from DG to grid. In this context, the DG inverter acts both as inverter and APF, used as inverter to invert supply from DG and feeds grid for specified time and also as APF for harmonic compensation thereafter along with dual APF. The proposed system is developed and results are obtained using MATLAB/SIMULINK software. Results are shown for DG inverter feeding active power to grid and also acting as APF. Dual APF characteristics are also shown.  </span>

scholarly journals Design of a Measuring System for Electricity Quality Monitoring within the SMART Street Lighting Test Polygon: Pilot Study on Adaptive Current Control Strategy for Three-Phase Shunt Active Power Filters

Sensors ◽  
2020 ◽  
Vol 20 (6) ◽  
pp. 1718 ◽  
Author(s):  
Radek Martinek ◽  
Petr Bilik ◽  
Jan Baros ◽  
Jindrich Brablik ◽  
Radana Kahankova ◽  
...  
Keyword(s):  
Power Quality ◽  
Control Strategy ◽  
Active Power ◽  
Current Control ◽  
Measuring System ◽  
Street Lighting ◽  
Active Power Filters ◽  
Power Filters ◽  
Three Phase

This study focuses on the design of a measuring system for monitoring the power quality within the SMART street lighting test polygon at university campuses with relation to testing an adaptive current control strategy for three-phase shunt active power filters. Unlike conventional street lighting, SMART elements are powered 24/7. Due to the electronic character of the power part of such mass appliances, there are increased problems with the power quality of the electric energy. Compared to the current concept of street lighting, there is a significant increase in the content of higher current harmonic components, which cause several problems in the distribution system. The test polygon contains 16 luminaires made by various manufacturers and mounted with various SMART components. Using the polygon control and monitoring system, dynamic load scenarios were selected. These scenarios tested the possibilities of different adaptive current control strategies for three-phase shunt active power filters to improve the power quality of electricity. This study focuses on three adaptive algorithms that respond to dynamic changes of current harmonics level in real-time. The possibility of active filter control was tested using FPGA, mainly due to the low latency of the filter control part.

scholarly journals Power quality assurance in the electrical network of the Syrian Arab Republic, using the active power filter

2020 ◽  
Vol 22 (1) ◽  
pp. 18-27
Author(s):  
R. R. Nasyrov ◽  
R. Aljendy ◽  
T. Kherbek
Keyword(s):  
Power Quality ◽  
Electromagnetic Interference ◽  
Harmonic Distortion ◽  
Electrical Equipment ◽  
Active Power ◽  
Electrical Network ◽  
Syrian Arab Republic ◽  
Particle Swarm Method ◽  
The Impact

The set of characteristics that determine the power quality (PQ) can be used to describe the state and efficiency of the power supply system in terms of the influence of electromagnetic interference. The impact of electromagnetic interference on electrical equipment is manifested in the reduction of uptime, additional losses of active power, data loss, etc. The most common sources of interference in modern conditions are consumers with non-linear volt-ampere characteristics. This type of electrical receivers creates a distortion of the current and voltage waveform. In view of the widespread use of these power consumers in daily life and industry, special attention should be paid to the problems of harmonic distortion. This article presents the results of measurements and analysis of the quality of electricity, and also shows the effect of applying an active filter (AF) to ensure the quality of electricity in the distribution network (66/20 kV) of the city of Lattakia in the Syrian Arab Republic. The definition of the optimal capacitance of the AF dc link using the particle swarm method is given in order to minimize the total non- sinusoidal current and voltage in the studied electrical network.

Power Quality Improvement of High Voltage DC Link using Modified Shunt Active Power Filter

2018 ◽  
Vol 1 (1) ◽  
pp. 54-66
Author(s):  
Rakan Khalil Antar ◽  
Basil Mohammed Saied ◽  
Rafid Ahmed Khalil
Keyword(s):  
Power Quality ◽  
High Voltage ◽  
Pulse Width Modulation ◽  
Active Power Filter ◽  
Active Power ◽  
Voltage Source ◽  
Active Power Filters ◽  
Power Filter ◽  
Power Filters ◽  
Power Quality Improvement

A new control strategy for active power filters is proposed, modeled and implemented in order to improve the power quality of a line commutated converter High voltage DC link. The ability of reactive power and harmonics reductions are generally met by using passive and active power filters. In this paper, modified active power filter with a modified harmonics pulse width modulation algorithm is used to minimize the source harmonics and force the AC supply current to be in the same phase with AC voltage source at both sending and receiving sides of a line commutated converter high voltage DC link. Therefore, it is considered as power factor corrector and harmonics eliminator with random variations in the load current. The modified harmonics pulse width modulation algorithm is applicable for active power filter based on a three-phase five-level and seven-level cascaded H-bridge voltage source inverter. Simulation results show that the suggested modified multilevel active power filters improve total harmonics distortion of both voltage and current with almost unity effective power factor at both AC sides of high voltage DC link. Therefore, modified active power filter is an effective tool for power quality improvement and preferable for line commutated converter high voltage DC link at different load conditions.

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