Role of DSTATCOM in distribution network with non-linear and active loads

2016 ◽  
Author(s):  
Savreet Kaur ◽  
Parag Nijhawan
Keyword(s):  
Distribution Network ◽  
Non Linear

scholarly journals Sensitivity of wavepackets in jets to non-linear effects: the role of the critical layer

2015 ◽  
Author(s):  
Gilles Tissot ◽  
Mengqi Zhang ◽  
Francisco C. Lajús ◽  
André V. Cavalieri ◽  
Peter Jordan ◽  
...  
Keyword(s):  
Critical Layer ◽  
Non Linear ◽  
Linear Effects

scholarly journals Distribution system power quality compensation using a HSeAPF based on SRF and SMC features

2021 ◽  
Author(s):  
Akram Qashou ◽  
Sufian Yousef ◽  
Abdallah A. Smadi ◽  
Amani A. AlOmari
Keyword(s):  
Power Distribution ◽  
Distribution System ◽  
Reactive Power ◽  
Sliding Mode ◽  
Distribution Network ◽  
Harmonic Distortion ◽  
Phase Locked Loop ◽  
Voltage Source ◽  
Voltage Source Converter ◽  
Non Linear

AbstractThe purpose of this paper is to describe the design of a Hybrid Series Active Power Filter (HSeAPF) system to improve the quality of power on three-phase power distribution grids. The system controls are comprise of Pulse Width Modulation (PWM) based on the Synchronous Reference Frame (SRF) theory, and supported by Phase Locked Loop (PLL) for generating the switching pulses to control a Voltage Source Converter (VSC). The DC link voltage is controlled by Non-Linear Sliding Mode Control (SMC) for faster response and to ensure that it is maintained at a constant value. When this voltage is compared with Proportional Integral (PI), then the improvements made can be shown. The function of HSeAPF control is to eliminate voltage fluctuations, voltage swell/sag, and prevent voltage/current harmonics are produced by both non-linear loads and small inverters connected to the distribution network. A digital Phase Locked Loop that generates frequencies and an oscillating phase-locked output signal controls the voltage. The results from the simulation indicate that the HSeAPF can effectively suppress the dynamic and harmonic reactive power compensation system. Also, the distribution network has a low Total Harmonic Distortion (< 5%), demonstrating that the designed system is efficient, which is an essential requirement when it comes to the IEEE-519 and IEC 61,000–3-6 standards.

scholarly journals A Unified Mathematical Formalism for First to Third Order Dielectric Response of Matter: Application to Surface-Specific Two-Colour Vibrational Optical Spectroscopy

Symmetry ◽  
2021 ◽  
Vol 13 (1) ◽  
pp. 153 ◽  
Author(s):  
Christophe Humbert ◽  
Thomas Noblet
Keyword(s):  
Dielectric Response ◽  
Structure And Properties ◽  
Linear Optics ◽  
Third Order ◽  
Mathematical Functions ◽  
Sum Frequency ◽  
Non Linear Optics ◽  
Non Linear ◽  
Light Excitation

To take advantage of the singular properties of matter, as well as to characterize it, we need to interact with it. The role of optical spectroscopies is to enable us to demonstrate the existence of physical objects by observing their response to light excitation. The ability of spectroscopy to reveal the structure and properties of matter then relies on mathematical functions called optical (or dielectric) response functions. Technically, these are tensor Green’s functions, and not scalar functions. The complexity of this tensor formalism sometimes leads to confusion within some articles and books. Here, we do clarify this formalism by introducing the physical foundations of linear and non-linear spectroscopies as simple and rigorous as possible. We dwell on both the mathematical and experimental aspects, examining extinction, infrared, Raman and sum-frequency generation spectroscopies. In this review, we thus give a personal presentation with the aim of offering the reader a coherent vision of linear and non-linear optics, and to remove the ambiguities that we have encountered in reference books and articles.

In search of lost space: The process of space planning through remembering and history

Organization ◽  
2015 ◽  
Vol 23 (1) ◽  
pp. 71-89 ◽  
Author(s):  
Fabio James Petani ◽  
Jeanne Mengis
Keyword(s):  
Production Of Space ◽  
Space Planning ◽  
The Past ◽  
Time Space ◽  
Non Linear ◽  
Over Time ◽  
Contested Narratives

This article explores the role of remembering and history in the process of planning new spaces. We trace how the organizational remembering of past spaces enters the conception (i.e. planning) of a large culture center. By drawing on Henri Lefebvre’s reflections on history, time and memory, we analyze the processual interconnections of his spatial triad, namely between the planned, practiced, and lived moments of the production of space. We find that over time space planning involves recurrent, changing, and contested narratives on ‘lost spaces’, remembering happy spaces of the past that articulate a desire to regain them. The notion of lost space adds to our understanding of how space planning involves, through organizational remembering, a sociomaterial and spatiotemporal work of relating together different spaces and times in non-linear narratives of repetition.

scholarly journals Peran Pengasuhan Otoritatif Terhadap Patriotisme Remaja: Dengan Mediator Kepuasan Hidup Dan Nasionalisme

2018 ◽  
Vol 24 (3) ◽  
pp. 326
Author(s):  
Agoes Dariyo
Keyword(s):  
Life Satisfaction ◽  
Significant Role ◽  
Quantitative Research ◽  
Statistical Tests ◽  
Authoritative Parenting ◽  
Measuring Instrument ◽  
Non Linear ◽  
Parenting Role ◽  
Role Of Parents

ABSTRACTThis study  aimed to found out the authoritative parenting role of parents to developed  adolescent nationalism and patriotism in the framework of national resilience. Quantitative research by taking data using a Likert scale measuring instrument in the form of questionnaires, namely authoritative parenting, life-satisfaction, nationalism and patriotism. The subjects involved in this study amounted to 186 adolescents (male = 99 and female = 87 female, with an average age of 18.1 years). Furthermore, the collected data were analyzed using statistical tests, namely logarithmic non-linear regression. The results showed that (a) parents' authoritative parenting played a significant role in developing adolescent nationalism and patriotism in the framework of achieving national resilience, (b) authoritative parenting parents played a significant role in achieving teen life satisfaction so that they also developed nationalism and patriotism in the framework of national resilience, (c) youth realized that the state hadfacilitated its citizens to had jobs so that parents were able to meet the needs of life for teenagers. Thus, they as teenagers were aware of being citizens who had nationalism and patriotism in their lives. ABSTRAKPenelitian ini bertujuan mengetahui peran pengasuhan otoritatif  orangtua untuk menumbuhkembangkan sikap nasionalismedan patriotisme remaja  dalam kerangka ketahanan nasional.Penelitian bersifat kuantitatif dengan pengambilan data menggunakan alat ukur skala Likert berupa kuesioner yaitu pola asuh otoritatif, kepuasan hidup, nasionalisme dan patriotisme. Subjek yang terlibat dalam penelitian ini berjumlah 186 remaja (laki-laki = 99 orang dan perempuan = 87 perempuan, dengan rerata usia 18,1 tahun). Selanjutnya, data yang terkumpul dianalisis dengan menggunakan uji statistik yaitu regresi non-linear logaritmik.Hasil penelitian menunjukkan bahwa (a) pola asuh otoritatif orangtuaberperan secara signifikan dalam menumbuh-kembangkan sikap nasionalisme dan patriotismeremaja dalam kerangka mencapai ketahanan nasional, (b) pola asuh otoritatif orangtua berperan secara signifikan dalam mencapai kepuasan hidup remaja sehingga mereka pun akan menumbuhkembangkan sikap nasionalismedan patriotisme dalam kerangka ketahanan nasional, (c) remaja menyadari bahwa negara telah memfasilitasi warganya untuk memiliki pekerjaan sehingga orangtua  mampu memenuhi kebutuhan hidup bagi anak remaja. Dengan demikian,  mereka sebagai remaja sadar untuk menjadi warga-negara yang memiliki sikap nasionalisme dan patriotisme dalam hidupnya.

scholarly journals СОФІЯ ДЛЯ АВІА

2019 ◽  
pp. 87-96
Author(s):  
А. Л. Свящук
Keyword(s):  
System Theory ◽  
Political System ◽  
Point Of View ◽  
Aircraft Industry ◽  
Philosophical Foundations ◽  
Black Swans ◽  
The World ◽  
Non Linear ◽  
Probabilistic Nature

In the time when the basic formulas and approaches of the aircraft industry are based on the principles of classical science, the nature of the observed phenomena seems non-linear. Such phenomena as turbulence, flutter, buffering, disruption of the air flow can be explained by means of synergetics and system theory in the context of the post-non-classical paradigm. However, a certain contradiction can be observed: non-linear phenomena are explained by linear traditional science. That is why many formulas of aerodynamics and strength have a large empirical part. Therefore, it becomes necessary to revise the philosophical foundations of most approaches and the overall picture of the world as a whole. The use of the concepts of synergetics and system theory allows us to describe more accurately certain phenomena in aviation, which ultimately will lead to the creation of more efficient and safer aircraft. For example, we can design our aircraft not only as a complex system, but also as part of other complex systems, evaluating its effectiveness from the point of view of more ambitious and higher levels, predicting its operation and modernization in the changing conditions of the socio-political system. Moreover, the very nature of engineering creativity based on synergistic approaches will become more efficient and effective by increasing the intensity of aviation thought. Therefore, understanding the role of chance, the effect of emergence will allow us to be prepared for many surprises and black swans and also be wary about our knowledge, assessing their probabilistic nature.

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