Investigation of the line-reactor influence on the active power filter and hybrid active power filter efficiency: practical approach

Mboving, Chamberlin Stéphane Azebaze

doi:10.15199/48.2021.03.07

Cited by 5 publications

(8 citation statements)

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“…However, this solution will inevitably lead to an increase in system volumes and implementation costs. Another solution is to use high-order passive power filters, where additional capacitors and/or inductors are added to improve the filter performance of PPFs while reducing filter capacity/inductors and system costs [23][24][25][26].…”

Section: Of 37mentioning

confidence: 99%

“…This technology has a strong dependence on subjective experience and makes it difficult to meet certain requirements. For example, single-tuned PPFs must adjust their frequency slightly lower than the harmonic frequency to be eliminated, as aging, atmospheric conditions, or faults in the element can change the initial adjustment frequency of PPFs and reduce the role of long-term filters [24,[27][28][29].…”

Section: Of 37mentioning

confidence: 99%

“…In order to reduce input current distortion, inductors are used along with line impedance (AC reactors). High inductance values (with significant voltage drops) are necessary to maintain the percentage of total harmonic distortion for currents in the limit [2,6,8,21,24].…”

Section: Of 37mentioning

confidence: 99%

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Aspects Regarding of Passive Filters Sustainability for Non-Linear Single-Phase Consumers

Diniș,

Popa,

Cunțan

et al. 2024

Sustainability

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The efficient use of electrical energy (an important component of sustainability) has become increasingly important for electrical consumers (industrial and non-industrial) as we face the challenges of climate change and the need to protect the environment. This theme is essential for guaranteeing a secure and sustainable future for both present and future generations. The power quality and the efficiency of electrical energy are connected to each other. Some power quality problems are caused by natural and unpredictable events, but many disturbances affecting power quality are caused by suppliers and consumers. One of the most important parameters in power engineering is the power factor, which indicates the degree of efficient use of electrical energy. Harmonics is the most important dynamic component of power quality, which affects the operation of electrical equipment and, at the same time, reduces the power factor. Harmonic sources in power systems are generally associated with nonlinear loads. To analyze the operating of passive filters (series L, shunt LC, T type LCL), two groups of experiments (relevant consumers were chosen for the industry as well as from the household sector) were carried out with single-phase nonlinear consumers: in the first group of experiments, a variable-frequency drive is used to supply a three-phase induction motor with variable load; in the second group of experiments, compact fluorescent lamps and LED lamps were used. Following the experiments, it was found that the difficulty of calibrating coils (to size a filter), especially the coils with a core, and the change in electrical properties over time for capacitors. For a certain type of consumer, the improvement of the current waveform depends on the type of filter used, the possibility of improving the power factor (to use electrical energy efficiently), and the role of the source impedance, which is particularly important to improve the efficiency of passive filters. Through the appropriate choice of the passive filter, a decrease in the deforming regime is obtained, with a slight decrease in the active power, and by increasing the power factor, a decrease in the losses of electrical energy from the electrical networks is obtained, with direct implications for the emission of greenhouse gases.

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Section: Of 37mentioning

confidence: 99%

Section: Of 37mentioning

confidence: 99%

See 1 more Smart Citation

Aspects Regarding of Passive Filters Sustainability for Non-Linear Single-Phase Consumers

Diniș,

Popa,

Cunțan

et al. 2024

Sustainability

View full text Add to dashboard Cite

show abstract

“…In this way, the component inductors-capacitors provide a very low reaction in correspondence to the elimination of harmonics that circulate in the component without affecting the entire network. Also, to limit the distortion of the current, AC reactors can be used that are connected in series with the electrical consumers [15][16][17][18][19].…”

Section: Introductionmentioning

confidence: 99%

An Experimental Analysis of Three-Phase Low-Voltage Power Factor Controllers Used in a Deforming Regime

Diniș,

Popa

2024

Energies

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In industry, to improve the power factor in low-voltage power substations, a power factor controller (the most used method) can be installed which connects capacitors banks (connected, or not, with coils) in the electrical installation. The most important parameters of power engineering are the power factors that indicate the efficiency of energy use. Currently, many non-linear consumers (more single-phase than three-phase) are used on low voltages. Harmonics (currents and/or voltages) are the most important dynamic component of power quality, affecting electrical equipment performance and also reducing power factors. The purpose of this analysis is to increase the displacement power factor and to decrease the total harmonic distortion (for the current) in the conditions where there are linear and non-linear consumers, where the power factor must be improved with capacitors banks. Relevant different consumers have been selected for both the industry and the home sector, as follows: inductive motors that are linear, inductive consumers, compact fluorescent lamps that are non-linear, and capacitive consumers. This analysis was carried out depending on the number of steps used for the power factor controller, the values of the capacitors banks, the AC reactor (connected in series with all consumers), and the LC shunt filters. For a slight deformation regime, a large number of capacitors banks with different values ensure a finer adjustment of the displacement factor. The maximum number of steps that regulators can command should not necessarily be used (the reliability of the installation decreases with the increase in the number of capacitors banks), but a reduced number of steps can be used, which can lead to higher values of displacement power factors. To improve the deforming regime and to increase the displacement power factor, the use of LC shunt filters, connected to a small number of steps, will also increase the displacement power factor (over 0.9) and decrease the total harmonic distortion (up to 7–10%) for the current. Weaker results were obtained with AC reactors connected to the power supply phases of consumers and, if a larger number of stages were used, to which LC shunt filters were connected, these filters become difficult to calibrate (resonances occur).

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“…Therefore, it is necessary to study the power system in terms of equivalent parameters (grid and load sides) before its installation. That problem is also investigated in [71].…”

Section: Introductionmentioning

confidence: 99%

Analysis of the Influence of the 6-Pulse Thyristor-Bridge Input Reactor Size on the Shunt Active Power Filter Work Efficiency: A Case Study

Azebaze Mboving,

Hanzelka

2023

Energies

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This paper presents a case study in which the influence of the 6-pulse thyristor-bridge input reactor size on the shunt active power filter (SAPF)’s work performance is investigated. The purpose of using an SAPF in the power system is in most cases for fundamental harmonic reactive power compensation, harmonics and asymmetry mitigation. The work efficiency of such a filter depends not only on the designed control system, interface filter and dc-link capacitor parameters, but also on the parameters of the electrical system in which it is connected. Therefore, it is necessary to study and know the power system (supplier and consumer sides) before its installation. For instance, in the electrical system with diode or thyristor-bridge as loads, the SAPF performance efficiency may not be satisfied due to the high rate of current change (di/dt) at the points of commutation notches. In this paper, the performed simulation and laboratory experiments show that for a better operating efficiency of the SAPF, the input reactor parameters should be selected based not only on the effective reduction in the inverter switching ripple or the control system demand, but also on the parameters of the load, such as the parameters of the diode or thyristor-bridge input reactor. Apart from the experimental demonstrations on how the input reactor size influences the SAPF work efficiency, the novelties in this paper are: the formulated recommendations on how to choose the SAPF input reactor parameters (the SAPF is more efficient in terms of harmonics, asymmetry and reactive power mitigation when the inductance of its input reactor (L-filter) is smaller than the one of the diode or thyristor-bridge input reactor); the proposed SAPF control system; the proposed expressions to compute the SAPF input reactor inductance, DC voltage and capacitor.

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Investigation of the line-reactor influence on the active power filter and hybrid active power filter efficiency: practical approach

Cited by 5 publications

References 0 publications

Aspects Regarding of Passive Filters Sustainability for Non-Linear Single-Phase Consumers

Aspects Regarding of Passive Filters Sustainability for Non-Linear Single-Phase Consumers

An Experimental Analysis of Three-Phase Low-Voltage Power Factor Controllers Used in a Deforming Regime

Analysis of the Influence of the 6-Pulse Thyristor-Bridge Input Reactor Size on the Shunt Active Power Filter Work Efficiency: A Case Study

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