Search results for: DESIGN OPTIMIZATION, RANS, WIND POWER, DUAL-ROTOR WIND TURBINE, ROTOR DESIGN, VARIABLE-FIDELITY MODELLING

• RANS-based design optimization of dual-rotor wind turbines

  Publication

  • A. Thelen
  • L. Leifsson
  • A. Sharma
  • S. Kozieł

  - ENGINEERING COMPUTATIONS - Year 2018

  Purpose An improvement in the energy efficiency of wind turbines can be achieved using dual rotors. Because of complex flow physics, the design of dual-rotor wind turbines (DRWTs) requires repetitive evaluations of computationally expensive partial differential equation (PDE) simulation models. Approaches for solving design optimization of DRWTs constrained by PDE simulations are investigated. The purpose of this study is to determine...

  Full text to download in external service

• Variable-fidelity shape optimization of dual-rotor wind turbines

  Publication

  • T. Andrew
  • L. Leifur
  • S. Anupam
  • S. Kozieł

  - ENGINEERING COMPUTATIONS - Year 2018

  Purpose Dual-rotor wind turbines (DRWTs) are a novel type of wind turbines that can capture more power than their single-rotor counterparts. Because their surrounding flow fields are complex, evaluating a DRWT design requires accurate predictive simulations, which incur high computational costs. Currently, there does not exist a design optimization framework for DRWTs. Since the design optimization of DRWTs requires numerous model...

  Full text to download in external service

• Variable Size Twin-Rotor Wind Turbine

  Publication

  • P. Doerffer
  • K. Doerffer
  • T. Ochrymiuk
  • J. Telega

  - ENERGIES - Year 2019

  Full text to download in external service

• Axial-Flux Permanent-Magnet Dual-Rotor Generator for a Counter-Rotating Wind Turbine

  Publication

  • F. Kutt
  • K. Blecharz
  • D. Karkosiński

  - ENERGIES - Year 2020

  Coaxial counter-rotating propellers have been widely applied in ships and helicopters for improving the propulsion efficiency and offsetting system reactive torques. Lately, the counter-rotating concept has been introduced into the wind turbine design. Distributed wind power generation systems often require a novel approach in generator design. In this paper, prototype development of axial-flux generator with a counter-rotating...

  Full text available to download

• An Innovative Floating System with a Savonius Rotor as a Horizontal-Axis Wind Turbine

  Publication

  • J. Grzelak
  • L. G. Carrillo
  • J. Nakielski
  • M. Piotrowicz
  • K. Doerffer

  - Polish Maritime Research - Year 2024

  In this project, an innovative wind turbine was designed for a floating plant. A large Savonius rotor was replaced with a double-rotor wind turbine implemented as a horizontal-axis turbine. This double rotor was positioned on the tip of a thrust plate and fixed to the deck of a catamaran. Simple 2D numerical simulations were performed to confirm the effectiveness of the concept. An analysis of the floating system configuration...

  Full text available to download

• Drivetrain of a Wind Turbine

  Publication

  • R. Gawarkiewicz
  • F. Wasilczuk
  • M. Wasilczuk

  - Machine Dynamics Research - Year 2015

  In a most commonly met design of a wind turbine the power is transmitted from the rotor to the generator through the system composed of the main shaft, friction connection, multiplying gearbox and a flexible coupling. The driving system comprises almost a complete set of the machine elements being described during machine design lectures and can serve as an interesting illustration...

  Full text to download in external service

• Michał Michna dr hab. inż.

  People

  Department of Power Electronics and Electrical Machines

  Michal Michna received the M.Sc. and Ph.D. degrees in electrical engineering from the Gdansk University of Technology (GUT), Gdansk, Poland, in 1998 and 2005, respectively. Since 2004, he was employed at the Department of Power Electronics and Electrical Machines of the Gdańsk University of Technology (assistant, assistant professor, senior lecturer). In 2010-2015 he was a deputy of head of the Department of Power Electronics and...

• Control of the wind turbine generator

  Publication

  • E. Bogalecka
  • Z. Krzemiński

  - Year 2007

  Wind power system consists of two main parts: wind turbine and electrical generator. Wind turbine converts the energy of the flowing air into mechanical energy, next generator converts this energy into electrical energy that is sent to the power system. These two processes should be realized with maximum efficiency and the following requirements for the control system can be formulated: opti-mal wind power conversion, compensation...

• Dependence of Power Characteristics on Savonius Rotor Segmentation

  Publication

  • K. Doerffer
  • J. Telega
  • P. Doerffer
  • P. Hercel
  • A. Tomporowski

  - ENERGIES - Year 2021

  Savonius rotors are large and heavy because they use drag force for propulsion. This leads to a larger investment in comparison to horizontal axis wind turbine (HAWT) rotors using lift forces. A simple construction of the Savonius rotor is preferred to reduce the production effort. Therefore, it is proposed here to use single-segment rotors of high elongation. Nevertheless, this rotor type must be compared with a multi-segment...

  Full text available to download

• Parametric Study on a Performance of a Small Counter-Rotating Wind Turbine

  Publication

  • M. Pacholczyk
  • D. Karkosiński

  - ENERGIES - Year 2020

  A small Counter-Rotating Wind Turbine (CRWT) has been proposed and its performancehas been investigated numerically. Results of a parametric study have been presented in this paper.As parameters, the axial distance between rotors and a tip speed ratio of each rotor have been selected.Performance parameters have been compared with reference to a Single Rotor Wind Turbine (SRWT).Simulations were carried out with Computational Fluids...

  Full text available to download