Results 31 to 40 of about 35,622 (233)

Hysteresis Control for Shunt Active Power Filter under Unbalanced Three-Phase Load Conditions

open access: yesJournal of Electrical and Computer Engineering, 2015
This paper focuses on a four-wire shunt active power filter (APF) control scheme proposed to improve the performance of the APF. This filter is used to compensate harmonic distortion in three-phase four-wire systems.
Z. Chelli   +3 more
doaj   +1 more source

Importance of Intrinsic-Q in Microring-Based Optical Filters and Dispersion-Compensation Devices [PDF]

open access: yes, 2007
We investigate the impact of the intrinsic-Q of the resonant poles on the performance of multiring-based optical filters and dispersion-compensating devices.
Hossein-Zadeh, Mani, Vahala, Kerry J.
core   +1 more source

A DC Hybrid Active Power Filter and Its Nonlinear Unified Controller Using Feedback Linearization

open access: yesIEEE transactions on industrial electronics (1982. Print), 2021
In the current power system, the conversion between dc and ac is widely existing and the dc-side harmonic problem is prominent. To suppress the second-harmonic current at the dc side of a single-stage single-phase inverter, a dc hybrid active power ...
Gaoxiang Li   +7 more
semanticscholar   +1 more source

Compensated Medium Voltage 6-Pulse CSR Using Shunt Active Power Filters: Three Different Configurations

open access: yesThe Journal of Engineering Research, 2014
The 6-pulse controlled AC/DC converter produces harmonics. The input current total harmonic distortion and the input power factor, which is firing delay angle dependent, are major drawbacks, and a compensation technique is mandatory.
MS Hamad, MI Masoud
doaj   +1 more source

HPFs filtering solutions for reduced the harmonic current generated by SMPS and ac drive systems

open access: yesEnergy Reports, 2020
This paper proposes a reduced 2nd, 3rd, 5th and 7th harmonic current of all power supply units and ac drives which effects of heating neutral cables and transformer.
K. Kularbphettong, C. Boonseng
doaj   +1 more source

An Improved Control Method of DC Voltage for Series Hybrid Active Power Filter

open access: yesEnergies
DC voltage is one of the important parameters of active power filters. Since the series hybrid active power filter does not withstand the fundamental voltage, it cannot absorb energy from the power grid, making it too difficult to control its DC voltage.
Jianben Liu, Yuan Ni, Jun Zhao
doaj   +1 more source

Grid Power Quality Enhancement Using Fuzzy Control-Based Shunt Active Filtering [PDF]

open access: yes, 2015
Active filtering has proved efficient for the mitigation of harmonics in distribution grids. This paper deals with the design of fuzzy control strategies for a three-phase shunt active filter to enhance the power quality via the regulation of the DC bus ...
Allaoui, Tayeb   +3 more
core   +1 more source

Fuzzy Linear Active Disturbance Rejection Control of Injection Hybrid Active Power Filter for Medium and High Voltage Distribution Network

open access: yesIEEE Access, 2021
In order to reduce the capacity of the active power filter (APF), improve its dynamic tracking speed and anti-disturbance ability of harmonic currents, so as to better solve the problem of harmonic pollution in the medium and high voltage distribution ...
X. Zhou, Yangyang Cui, Youjie Ma
semanticscholar   +1 more source

Predictive direct power control of a grid connected photovoltaic system, associated with an active power filter

open access: yesRevue des Énergies Renouvelables
This paper deals with power quality improvement using a three-phase active power filter (APF) connected to a PV power system. This paper deals with power quality improvement using a three-phase active power filter (APF) connected to a PV power system ...
Lakhdar Belhadji, Mohamed Nader Amrani
doaj   +1 more source

Control of Distributed Generators and Direct Harmonic Voltage Controlled Active Power Filters for Accurate Current Sharing and Power Quality Improvement in Islanded Microgrids

open access: yesInventions, 2019
Harmonics are regarded as one of the main challenges in a microgrid. This issue may even get worse when different distributed generators (DGs) work together to solve the load sharing problems due to mismatched feeder impedances and diversified DG ratings.
Hafiz Mudassir Munir   +6 more
doaj   +1 more source

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