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article

Technologies and Magnitude of Ancillary Services Provided by Commercial Buildings

Young-Jin Kim, David H. Blum, Nora Xu, Leo Su, more

Proceedings of the IEEE > 2016 > 104 > 4 > 758 - 779

Commercial buildings increasingly include technologies capable of providing ancillary services to electric power grids. Features include thermal energy storage inherent in building structures that can be coupled to electric grids through heating, ventilating, and air-conditioning (HVAC) systems controlled by variable-speed drives (VSDs). In parking garages, plug-in electric vehicles (PEVs) are connected...

article

Hybrid Voltage Sag\/Swell Compensators: A Review of Hybrid AC\/AC Converters

Jacek Kaniewski, Pawel Szczesniak, Marcin Jarnut, Grzegorz Benysek

IEEE Industrial Electronics Magazine > 2015 > 9 > 4 > 37 - 48

The parameters of electrical energy, such as supply voltage amplitude, are very important, especially from the viewpoint of the final consumer with respect to sensitive loads connected to the grid. Dynamic states in the power grid?voltage sags and swells?might cause faults and defects to develop in sensitive loads. To mitigate unwanted effects, many topologies of ac/ac converters are implemented as...

article

Integrated PLC-fuzzy PID Simulink implemented AVR system

Abdullah J.H. Al Gizi, M.W. Mustafa, Kaml M.A. Al Zaidi, Mahmoud K.J. Al-Zaidi, more

International Journal of Electrical Power and Energy Systems > 2015 > 69 > Complete > 313-326

Improving the transient response of power generation systems using automation control in a precise manner is the key issue. We design a fuzzy proportional integral derivative (PID) controller using Matlab and programmable logic controllers (PLCs) for a set point voltage control problem in the automatic voltage regulator (AVR) system. The controller objective is to maintain the terminal voltage all...

article

The Role of Voltage Controls in Modern All-Electric Ships: Toward the all electric ship.

Andrea Vicenzutti, Daniele Bosich, Giovanni Giadrossi, Giorgio Sulligoi

IEEE Electrification Magazine > 2015 > 3 > 2 > 49 - 65

Ships have witnessed an astounding evolution in the last 200 years. The introduction of the combustion engine has started an ever-faster change, both in the performance and functionality given by the ships. From the steam-powered ships of the early 1800s to the modern diesel-electric ships, the improvements were significant and increasingly rapid. In particular, in the last 30 years, the design of...

article

Offshore Wind Power Generation Technologies

Istvan Erlich, Fekadu Shewarega, Christian Feltes, Friedrich W. Koch, more

Proceedings of the IEEE > 2013 > 101 > 4 > 891 - 905

This paper provides an overview of the current state of the technology of offshore wind-based power generation and the technological challenges with emphasis on the electrical parts. First, a brief review of the core control functions, their correlation with operational behavior, and the grid-supporting capability of the machine during normal operation as well as during contingency situations are...

article

Power System Security in a Meshed North Sea HVDC Grid

Temesgen M. Haileselassie, Kjetil Uhlen

Proceedings of the IEEE > 2013 > 101 > 4 > 978 - 990

There are very ambitious plans in Europe for changing the energy infrastructure in order to reduce greenhouse gas emissions. This involves scenarios where renewable energy sources by 2050 will meet almost 100% of the electric power demand. This has spurred offshore wind farm development activities in the North Sea due to the vast wind energy potential in this region and the potential lack of suitable...

chapter

Grid code impact on generating stations: A generator owner and Operator's perspective

C. Schaeffer, Duke Energy, Z. Salami, Z. Wieger

2012 IEEE Power and Energy Society General Meeting > 1 - 7

2012 IEEE Power & Energy Society General Meeting. New Energy Horizons - Opportunities and Challenges

The evolution of new grid code requirements should impact the choices of new equipment, the performance of current equipment and the design of the generating station. However, the current state of plant planning and licensing may not include a consideration of the Grid Codes and sometimes, the proposed codes are based on a simplified approach used to model generation plants in the transmission system...

article

Novel Field-Weakening Control Scheme for Permanent-Magnet Synchronous Machines Based on Voltage Angle Control

David Stojan, Dušan Drevensek, Željko Plantic, Bojan Grcar, more

IEEE Transactions on Industry Applications > 2012 > 48 > 6 > 2390 - 2401

This paper presents a novel voltage-angle-based field-weakening control scheme appropriate for the operation of permanent-magnet synchronous machines over a wide range of speed. At high rotational speed, the stator voltage is limited by the inverter dc bus voltage. To control the machine torque above the base speed, the proposed method controls the angle of the limited stator voltage by the integration...

article

A Control Strategy for Enhanced Operation of Inverter-Based Microgrids Under Transient Disturbances and Network Faults

M. Amin Zamani, Amirnaser Yazdani, Tarlochan S. Sidhu

IEEE Transactions on Power Delivery > 2012 > 27 > 4 > 1737 - 1747

This paper proposes an enhanced control strategy for electronically coupled distributed energy resources that improves the performance of the host microgrid under network faults and transient disturbances. The proposed control strategy does not require controller mode switchings and enables the electronically coupled distributed energy resources to ride through network faults, irrespective of whether...

article

A quick demagnetization approach for low torque ripple in three‐phase switched reluctance motor drive system for electric vehicle applications

Indira Damarla, Venmathi Mahendran, Ramudu Ganji, Sangari A

International Journal of Circuit Theory and Applications > 52 > 6 > 2916 - 2935

Electric vehicles (EVs) have gained a forward approach for achieving the low carbon economy and green transportation. Switched reluctance (SR) motor‐based propulsion mechanisms have been popularly used for EVs due to the wide speed range capability. The conventional phase current regulation technique does not give the satisfactory reduction of torque ripple in SR motor drive, particularly for automotive...

article

SVR Control Method Adapted to Three‐Phase Unbalanced Voltage in Distribution Systems with Photovoltaics and Electric Vehicles

Tatsuki Okuno, Akihisa Kaneko, Yasuhiro Hayashi, Masaaki Ishimaru, more

IEEJ Transactions on Electrical and Electronic Engineering > 19 > 2 > 222 - 233

This paper proposes a control method for step voltage regulators (SVRs) to avoid voltage violations in distribution systems with unbalanced voltages due to photovoltaic (PV) generation and electric vehicle (EV) charging. Distribution system operators must effectively address voltage problems resulting from the widespread installation of distributed energy resources under the optimizing the utilization...

article

A novel control method for enhanced performance of single‐phase matrix converters

Osamah Al‐Dori, Ahmet Mete Vural

International Journal of Circuit Theory and Applications > 52 > 1 > 302 - 327

The conventional topology of direct single‐to‐single‐phase matrix converter (SSMC) is widely adopted in industrial and power system‐related applications owing to its desired features. Current control methods in the literature either limit the voltage transfer ratio (VTR) or prohibit their utilization to drive inductive (RL) loads. In this study, we propose a novel control method that overcomes these...

article

Robust voltage‐controlled transcutaneous energy transfer system for artificial anal sphincter

Yelin Chen, Pingping Jiang, Lichao Wang, Guozheng Yan, more

Artificial Organs > 48 > 1 > 37 - 49

Background The artificial anal sphincter (AAS) system has gained significant attention as a solution for treating fecal incontinence (FI). It relies on transcutaneous energy transfer (TET) as its primary energy source. However, changes in posture or biological tissue can cause misalignment of the coil, resulting in unstable power reception. Inadequate power affects charging efficiency, while excessive...

article

Ocena podstawowych trybów pracy falowników pod kątem możliwości ograniczenia negatywnego wpływu źródeł fotowoltaicznych na sieć nn

Klara Janiga

Wiadomości Elektrotechniczne > 2023 > R. 91, nr 8 > 17--23

W artykule opisano standardowe tryby sterowania napięciem z poziomu falownika instalacji fotowoltaicznych, bazujące na poborze mocy biernej i ograniczeniu generowanej mocy czynnej. Wykonano symulacje pracy sieci z dużą liczbą instalacji PV, przy zastosowaniu różnych trybów sterowania napięciem oraz z uwzględnieniem działania zabezpieczeń nadnapięciowych. Wykazano, że łączone tryby Q(U)+P(U) oraz cosφ(P)+P(U)...

article

Development and modeling of the antenna system the direction finder unmanned aerial vehicle

Juliy Boiko, Oleksiy Polikarovskykh, Vitalii Tkachuk

Informatyka, Automatyka, Pomiary w Gospodarce i Ochronie Środowiska > 2023 > T. 13, nr 1 > 26--32

The article is devoted to the design the proposed construction of the antenna system for the direction-finding complex of the unmanned aerial vehicle (UAV). The experimental part is represented by the results of mathematical modeling the behavior of the antenna in different parts the operating frequency range. The effectiveness of the adopted design solutions was evaluated in comparison with analogues...

article

Wykorzystanie neuronowej metody sterowania podobciążeniowym przełącznikiem zaczepów do poprawy warunków napięciowych w sieciach nn z generacją rozproszoną

Klara Janiga, Robert Jędrychowski

Automatyka, Elektryka, Zakłócenia > 2023 > Vol. 14, nr 2(52) > 58--74

W artykule podjęto problematykę zjawiska wzrostu napięcia w sieciach dystrybucyjnych z dużym udziałem fotowoltaicznych instalacji prosumenckich. W badaniach symulacyjnych dla przykładowej sieci nn porównano wybrane środki przeciwdziałania przekroczeniom napięciowym. Zaproponowano także autorską metodę sterowania podobciążeniowym przełącznikiem zaczepów transformatora, bazującą na sztucznej sieci neuronowej...

article

Use of a Neural Method to Control On-Load Tap Changer so as to Improve Voltage Conditions in LV Networks with Distributed Generation

Klara Janiga, Robert Jędrychowski

Automatyka, Elektryka, Zakłócenia > 2023 > Vol. 14, nr 2(52) > 42--57

The article deals with the issue of the phenomenon of voltage increase in distribution networks with a large share of photovoltaic prosumer installations. In the simulations for the exemplary low-voltage network, selected measures to prevent overvoltages were compared. An original method of controlling the transformers on-load tap changer based on an artificial neural network was also proposed. By...

article

Analiza wpływu rozkładu napięć na funkcjonowanie układu elektrycznego stacji prób wysokonapięciowych silników elektrycznych

Tomasz Drabek, Paweł Dybowski, Paweł Mularz, Łukasz Wójciak

Przegląd Elektrotechniczny > 2022 > R. 98, nr 8 > 174--178

Przedmiotem analiz jest rozkład napięć w trójfazowym układzie elektrycznym stacji prób silników indukcyjnych, mającej służyć do badania obiektów o mocach znamionowych do 3 MW i napięciach znamionowych do 15 kV. W podstawowym układzie połączeń stacji prób badany silnik zasilany jest z transformatora, zasilanego przez falowniki, do których energia elektryczna jest dostarczana z obwodu napięcia stałego...

article

Application of Model Predictive Control to Voltage Control in Distribution System for Coordination of SVR and SVC

Daiki Hino, Daisuke Iioka, Hiroyuki Mabuchi, Takaki Yasui, more

IEEJ Transactions on Electrical and Electronic Engineering > 17 > 6 > 917 - 926

With increase in the number of photovoltaic system installations, the prospect of voltage deviation from the acceptable range in a distribution system is increasing. Voltage distribution can be controlled using step voltage regulators (SVRs) and static var compensators (SVCs); however, for their coordination, it is necessary to stringently adjust the set value for each distribution line. In this study,...

article

Controllable Excitation of Surface Plasmon Polaritons in Graphene‐Based Semiconductor Quantum Dot Waveguides

Mikhail Yu. Gubin, Alexei V. Prokhorov, Valentyn S. Volkov, Andrey B. Evlyukhin

Annalen der Physik > 533 > 11 > n/a - n/a

The research aim of this study is the development of a theoretical semiclassical model of the controllable excitation and propagation of surface plasmon polaritons (SPPs) in planar graphene waveguides by the application of external voltage. The model is based on the numerical solution of the SPP's dispersion equation formulated for a system including two coupled graphene sheets with embedded quantum...

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Search results

Technologies and Magnitude of Ancillary Services Provided by Commercial Buildings

Hybrid Voltage Sag\/Swell Compensators: A Review of Hybrid AC\/AC Converters

Integrated PLC-fuzzy PID Simulink implemented AVR system

The Role of Voltage Controls in Modern All-Electric Ships: Toward the all electric ship.

Offshore Wind Power Generation Technologies

Power System Security in a Meshed North Sea HVDC Grid

Grid code impact on generating stations: A generator owner and Operator's perspective

Novel Field-Weakening Control Scheme for Permanent-Magnet Synchronous Machines Based on Voltage Angle Control

A Control Strategy for Enhanced Operation of Inverter-Based Microgrids Under Transient Disturbances and Network Faults

A quick demagnetization approach for low torque ripple in three‐phase switched reluctance motor drive system for electric vehicle applications

SVR Control Method Adapted to Three‐Phase Unbalanced Voltage in Distribution Systems with Photovoltaics and Electric Vehicles

A novel control method for enhanced performance of single‐phase matrix converters

Robust voltage‐controlled transcutaneous energy transfer system for artificial anal sphincter

Ocena podstawowych trybów pracy falowników pod kątem możliwości ograniczenia negatywnego wpływu źródeł fotowoltaicznych na sieć nn

Development and modeling of the antenna system the direction finder unmanned aerial vehicle

Wykorzystanie neuronowej metody sterowania podobciążeniowym przełącznikiem zaczepów do poprawy warunków napięciowych w sieciach nn z generacją rozproszoną

Use of a Neural Method to Control On-Load Tap Changer so as to Improve Voltage Conditions in LV Networks with Distributed Generation

Analiza wpływu rozkładu napięć na funkcjonowanie układu elektrycznego stacji prób wysokonapięciowych silników elektrycznych

Application of Model Predictive Control to Voltage Control in Distribution System for Coordination of SVR and SVC

Controllable Excitation of Surface Plasmon Polaritons in Graphene‐Based Semiconductor Quantum Dot Waveguides

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