نتایج جستجو برای: dc power transmission

تعداد نتایج: 751878  

2003
H.-J. Schulze F.-J. Niedernostheide U. Kellner-Werdehausen J. Przybilla M. Uder

High-power thyristors with direct light -triggering and integrated protection functions can be utilized advantageously for applications in which several thyristors are connected in series. This applies in particular to High-Voltage DC (HVDC) transmission, Static Var Compensation (SVC), converters for medium voltage drives, and also to certain pulse power applications. Recent progress in both de...

2000
Seung-Min Lee Jin-Hong Chung Hying-S. Yoon Mike Myung-Ok Lee

In this paper a study has been presented on High Speed(HS) and 79mW Low Power(LP) 16X16 MAC performance of new XOR-Based circuits using transmission gate logic(TG) implemented on 0.65um CMOS DLP/DLM technology. It is shown that our proposed MAC results in better performance than other published MACs due to no DC leakage currents for low power and bypassing unnecessary switching activities with ...

2013
Swati Srivastava

Transmitting power at high voltage and in DC form instead of AC is a new technology proven to be economic and simple in operation which is HVDC transmission. The HVDC (High Voltage Direct Current) technology is used to transmit electricity over long distances by overhead transmission lines or submarine cables. It is also used to interconnect separate power systems. A further development in this...

Journal: :سنجش از دور و gis ایران 0
عبدالمطلب رستگار دانشگاه گلستان علی منصوریان دانشگاه خواجه نصیرالدین طوسی محمد طالعی دانشگاه خواجه نصیرالدین طوسی دیاکو یاری دانشگاه خواجه نصیرالدین طوسی سارا بهشتی فر دانشگاه تبریز

using new approaches to optimize the process of power transmission line routing can solve many complex problems which power transmission line routing decision-makers are faced. due to the expansion of involved parameters we can consider multi-objective evolutionary algorithms as appropriate method in this area. in this thesis with using multi-objective evolutionary algorithms nsga-ii and offere...

2016
Frédéric Babonneau Alain Haurie

In this paper one introduces the modeling of power flow constraints for transmission grid in the multi-sectoral multi-energy long-term investment planning tool ETEM-SG. This extension allows a better representation of demand response for flexible loads triggered by real time marginal cost pricing. Since the loads and the generation units are geographically distributed these prices should be rep...

2008
M. Claus D. Retzmann D. Sörangr K. Uecker

Deregulation and privatization are posing new challenges to high-voltage transmission systems. High-voltage power electronics, such as HVDC (High Voltage Direct Current) and FACTS (Flexible AC Transmission Systems), provide the necessary features to avoid technical problems in heavily loaded power systems; they increase the transmission capacity and system stability very efficiently and assist ...

2015
Farah Fatin Zulkifli Jahariah Sampe Muhammad Shabiul Islam Mohd Ambri Mohamed

Corresponding Author: Farah Fatin Zulkifli Institute of Microengineering and Nanoelectronics (IMEN), Universiti Kebangsaan Malaysia (UKM), 43600 Bangi Selangor, Malaysia Email: [email protected] Abstract: This research presents architecture of Ultra Low Power (ULP) Micro Energy Harvester (MEH) using Radio Frequency (RF) signal as an input. RF has many advantages compared to other ambient sour...

Journal: :International Transactions on Electrical Energy Systems 2022

High voltage direct current (HVDC) technology is a key component in power systems owing to huge benefits such as long-distance transmission, lower losses, asynchronous grid interconnections, controllability, system availability, and limited short-circuit currents. HVDC transmission cost-effective method of transporting amounts across long distances with little loss. It can also link alternative...

2014
R S Geetha

Abstract Modular Multilevel Converter (MMC) has found very wide application in renewable energy sources, DC power transmission, high voltage applications and micro grid. However the technical challenge of MMC is to maintain constant current, constant power and constant voltage at the output depending on the requirement. In this paper a control loop is developed for maintaining constant power at...

2012
Jong-Ryul Yang Hyeon-Chang Son Young-Jin Park

A class E power amplifier including coupling coils is proposed for application in a wireless power transfer system using magnetic coupling. The proposed amplifier is directly connected to the coils with no discrete components for harmonic filtering and dc feeding, which could cause efficiency degradation of the amplifier. The system with the differential amplifier shows 6.95 W of transmitted po...

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