The assesement of the shunt active filter efficiency under varied power supply source and load parameters

<p>This paper puts forward a fixed-time cascade voltage control system for threephase voltage source inverters (VSIs) with LC output filter.First, a feedforward decoupling mechanism is used to elminate the dependency between the d-q parts of the control system. Then, proportional-integral (PI) regulators are used for current control in the inner loop. The current reference is provided by a novel VSI control technique developed for fixed-time voltage regulation and reference tracking. The approach suggested in this work tracks and maintains the voltage magnitude at its normalized value in a finite-time and before a maximum settling-time fixed in advance and independent of the system’s initial state. The voltage controller also maintains current stability by providing a smoother and smaller current reference. A comparative study with VSI conventional PI control for linear, nonlinear and unbalanced loads confirms the theoretical results.</p>

“…Let's consider the following positive definite Lyapunov function given as (6). The derivative of the Lyapunov function ( 6) is given as (7).…”

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Fixed-time control of voltage dynamics of three-phase voltage source inverters with LC output filter

Ghazzali

Haloua²,

Giri³

2022

“…The THD of 4.3% and 4.7% for balanced and unbalanced load is achieved respectively for shunt hybrid compensator with 26V DC link voltage. Sychev et al [26] present the shunt-active filter to analyze the efficiency parameter by varying the source and load parameters. The shunt active filter is modeled in five different ways.…”

Section: Review On Related Researchmentioning

confidence: 99%

Modeling of hybrid active power filter using artificial intelligence controller: hardware and software prospective

Sandhya¹,

Nagaraj

2021

<span lang="EN-US">The power factor is a significant concern in power systems. The significant power loss occurred due to electronic and electrical equipment damages affected by the deviation of physical characteristics, including voltage, current, and frequency parameters.The power loss and quality issues were resolved by introducing filtering techniques in electronic and electrical equipment. Many filtering techniques include passive filtering (PF), Active power filter (APF), and many hybrid approaches are already available. Most of these methods use proper compensation controlling approaches and failed to minimize the total harmonic distortion (THD), and harmonic mitigation in power systems has its best. In this article, an efficient Hybrid-APF using Artificial-Neuro Fuzzy interface system (ANFIS) for software and hardware perspective is designed. The proposed approach uses hybrid controlling strategies which include PI with artificial intelligence (ANFIS) controller, to control the power losses for H-APF. Additionally, current compensation is achieved by PQ-theory, followed by Hysteresis-Current- Controller (HCC). The hardware architecture of ANFIS with HCC is designed to improve the chip-area for real-time power applications.The present work analyzed by simulating the voltage and current waveform. The proposed-H-APF using ANFIS controller, both software and hardware approaches, is compared with other control techniques like H-APF with PI and Fuzzy logic controller by concerning THD,Reactive power, and Different Harmonics and loads improvements.</span>

“…Also, in this case it is necessary to have a multifunctional device to improve power quality under changing power supply parameters and connected load characteristics [12], [13]. There are plenty of such devices, and it is reasonable to consider in detail hybrid filters which are based on active and passive filters [14], [15]. Any hybrid structure includes a series or shunt active filter with one or several resonance passive filters or with one wide-band passive filter.…”

Section: Introductionmentioning

confidence: 99%

Developing a hybrid filter structure and a control algorithm for hybrid power supply

Sychev

Aladin

Serikov

2022

The paper presents the results of a study on hybrid filter operation and performance under hybrid power supply. In the study, a hybrid filter structure was developed and proved to perform a set of power quality improving functions. The paper demonstrates that it is necessary for the hybrid filter structure to be variable in order to adapt to changes in power supply. A case is made for using an additional passive filter at the active part output of the hybrid filter under distributed generation. The optimal structure and parameters of such an additional passive filter are identified and proved. Based on the experimental research results, the mathematical and computer simulation models of the proposed hybrid filter for hybrid power supply were developed. The modeling and simulation results showed the efficiency level to be satisfactory and power quality to improve due to applying the proposed hybrid filter. Using the modeling and simulation results, an adaptive algorithm to control the operation factors of the proposed hybrid filter under hybrid power supply was developed, tested, and evaluated. Practical recommendations for industrial application of the proposed hybrid filter are given.