Wyniki wyszukiwania dla: energy flow controller

• Interline power flow controller - properties and control strategy in dynamic states

  Publikacja

  • R. Strzelecki
  • P. Smereczynski
  • G. Benysek

  - Rok 2005

  High-power electronic converter topologies, in such forms as Unified Power Flow Controllers (UPFC), Static Compensators (STATCOM) and Interline Power Flow Controllers (IPFC), have been used to enhance and optimize the use of transmission facilities, under the concept of a flexible ac transmission system (FACTS). In Europe, the anticipated proliferation of distributed-generation (DG) in the near future, driven by governmental initiatives...

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• Interline power flow controller - properties and control strategy in dynamic states

  Publikacja

  • R. Strzelecki
  • P. Smereczynski
  • G. Benysek

  - Rok 2005

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• Modelling of energy flow in electrical machines. A bond graph approach

  Publikacja

  • M. Ronkowski

  - Prace Naukowe Instytutu Maszyn, Napędów i Pomiarów Elektrycznych Politechniki Wrocławskiej. Studia i Materiały - Rok 2008

  Przedstawiono w ujęcia grafów wiązań model przepływu energii/mocy w maszynach elektrycznych pracujących w hybrydowych systemach przetwarzania energii. Jako przykład do rozważań przyjęto system napędu trakcyjnego pojazdów hybrydowych.

• Modelling of energy flow in mechatronic systems. A bond graph approach

  Publikacja

  • M. Ronkowski
  • S. Makowski

  - Rok 2007

  W referacie przedstawiono w sposób jednoliy modelowanie systemów mechatroniki metodą grafów wiązań (GW) w aspekcie symulacji przepływu energii. Omówiono ogólne założenia modelowania w ujęciu GW. Modelowanie przepływu energii rozważano na przykładzie napędu pojazdu hybrydowego PH-MAK.

• Determination of Mechanical Energy Loss in Steady Flow by Means of Dissipation Power

  Publikacja

  • W. Artichowicz
  • J. Sawicki

  - Archives of Hydro-Engineering and Environmental Mechanics - Rok 2017

  When systems of simple geometry like pipes or regular channels are considered, the mechan- ical energy loss of the fluid flow can be expressed by local and longitudinal empirical energy loss coefficients. However, in the case of large spatially distributed objects, there are no simple approaches to this task. In practice, general recommendations addressing different types of objects are used, but they usually provide very coarse...

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• Diagnosing marine turbine engines through energy characteristics of their flow section

  Publikacja

  • Z. Korczewski

  - Combustion Engines - Rok 2012

  The aim of the performed research was to develop of diagnostic method of the flow section of a marine turbine combustion engine based on the level of delamination of its energy characteristics. The here adopted diagnostic model provides for a formulation of the evaluation of the technical conditions based on the measurements of the parameters of the thermodynamic medium in the characteristic control cross-sections of the engine...

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• A simplified energy dissipation based model of heat transfer for subcooled flow boiling

  Publikacja

  • J. Mikielewicz
  • D. Mikielewicz

  - INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER - Rok 2017

  In the paper a model is presented based on energetic considerations for subcooled flow boiling heat transfer. The model is the extension of authors own model developed earlier for saturated flow boiling and condensation. In the former version of the model we used the heat transfer coefficient for the liquid single-phase as a reference level, due to the lack of the appropriate model for heat transfer coefficient for the subcooled...

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• A simplified energy dissipation based model of heat transfer for post-dryout flow boiling

  Publikacja

  • J. Mikielewicz
  • D. Mikielewicz

  - INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER - Rok 2018

  model for post dryout mist flow heat transfer is presented based on considerations of energy dissipation in the flow. The model is an extension of authors own model developed earlier for saturated and subcooled flow boiling. In the former version of the model the heat transfer coefficient for the liquid singlephase convection as a reference was used, due to the lack of the appropriate model for heat transfer coefficient for the...

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• Impact of Energy Slope Averaging Methods on Numerical Solution of 1D Steady Gradually Varied Flow

  Publikacja

  • W. Artichowicz
  • D. Prybytak

  - Archives of Hydro-Engineering and Environmental Mechanics - Rok 2015

  In this paper, energy slope averaging in the one-dimensional steady gradually varied flow model is considered. For this purpose, different methods of averaging the energy slope between cross-sections are used. The most popular are arithmetic, geometric, harmonic and hydraulic means. However, from the formal viewpoint, the application of different averaging formulas results in different numerical integration formulas. This study...

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• Comparison of Average Energy Slope Estimation Formulas for One-dimensional Steady Gradually Varied Flow

  Publikacja

  • W. Artichowicz
  • P. Mikos-Studnicka

  - Archives of Hydro-Engineering and Environmental Mechanics - Rok 2014

  To find the steady flow water surface profile, it is possible to use Bernoulli’s equation, which is a discrete form of the differential energy equation. Such an approach requires the average energy slope between cross-sections to be estimated. In the literature, many methods are proposed for estimating the average energy slope in this case, such as the arithmetic mean, resulting in the standard step method, the harmonic mean and...

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