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Methodology for rotor angle transient stability assessment in parameter space
2017 IEEE Power & Energy Society General Meeting, 2016In this paper, an efficient methodology to assess Rotor Angle Stability (RAS) in parameter-space has been proposed. This methodology maps deformations of the power system RAS region under operational changes to a security region in parameter-space that can be assessed on-line. In order to choose the proper parametrization, security boundaries have been
Marina Oluic +2 more
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Effects of Nonuniform Blade Spacing on Compressor Rotor Flutter Stability
Journal of Propulsion and Power, 2021A generalized flat plate cascade model is used in this study to predict the unsteady aerodynamics of a vibrating blade row with nonuniform blade spacing in subsonic compressible flow.
Yujun Leng, Nicole L. Key
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2016 XXII International Conference on Electrical Machines (ICEM), 2016
Fault detection in induction machines is commonly realized through motor current signature analysis. In case of Wound-Rotor Induction Machine rotor faults, the amplitude of the inverse sequence harmonic component -sf of the rotor current space-vector is monitored in order to sense its variation.
GRITLI, YASSER +3 more
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Fault detection in induction machines is commonly realized through motor current signature analysis. In case of Wound-Rotor Induction Machine rotor faults, the amplitude of the inverse sequence harmonic component -sf of the rotor current space-vector is monitored in order to sense its variation.
GRITLI, YASSER +3 more
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Ocean Engineering, 2013
Abstract The water particles are known to undergo orbital motion in wave motion. This orbital motion was studied and seven Savonius rotors with same diameters but different blade angles were constructed and tested in a wave channel to find the optimum blade angle.
M. Rafiuddin Ahmed +2 more
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Abstract The water particles are known to undergo orbital motion in wave motion. This orbital motion was studied and seven Savonius rotors with same diameters but different blade angles were constructed and tested in a wave channel to find the optimum blade angle.
M. Rafiuddin Ahmed +2 more
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Multi-rotor pseudo-inverse method research based on kernel space
2016 IEEE Chinese Guidance, Navigation and Control Conference (CGNCC), 2016since the X8 rotor UAV provides control redundancy, we can take advantage of this characteristic to make the X8 rotor UAV stably fly, when the UAV is damaged. There are many methods to achieve this goal. The most common method is the pseudo inverse method.
null Kunpeng Li +3 more
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State-space inflow modelling for lifting rotors with mass injection
The Aeronautical Journal, 2004AbstractIn the field of rotorcraft dynamics, it is significant that the induced inflow field is well understood and modeled. A large number of methodologies have been developed in the past years, among which the state-space model is recognised for its advantage in real-time simulation, preliminary design, and dynamic eigenvalue analysis. Recent studies
K. Yu, D. A. Peters
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IEEE Transactions on Industrial Electronics, 2017
This paper investigates a new approach for the detection of rotor electrical faults in three-phase wound-rotor induction machines. The method is assessed in a wind energy conversion system, where the rotor side of the wound-rotor induction machine is supplied by a static converter for the control of active and reactive power flows from the generator to
Gritli, Yasser +4 more
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This paper investigates a new approach for the detection of rotor electrical faults in three-phase wound-rotor induction machines. The method is assessed in a wind energy conversion system, where the rotor side of the wound-rotor induction machine is supplied by a static converter for the control of active and reactive power flows from the generator to
Gritli, Yasser +4 more
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Effects of cross-stream rotor spacing on dual-rotor axial-flow marine turbine performance
In current-drive marine energy applications, some deployment strategies explore mounting multiple axial-flow rotors from a single platform. The rotor and nacelle for each turbine unit can be deployed from bottom mounted foundations and towers, or from floating platforms where the system is lowered into the flow to harness energy.Guzmán, Javier, Hill, Craig
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Psychoacoustic Optimization of the Spacing of Propellers, Helicopter Rotors, and Axial Fans
Journal of Propulsion and Power, 2016The paper deals with the minimization of the subjective annoyance (that is, of the quality of the received sound rather than of its acoustic power) due to tonal noise generated by subsonic low-solidity axial-flow rotors. The employed method is based on the uneven spacing of the blades, is typically applied to open or nearly open rotors, and is based on
ANGHINOLFI, DAVIDE +3 more
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Acoustics and Performance of High-Speed, Unequally Spaced Fan Rotors
Journal of Engineering for Power, 1980This paper describes an experimental measurement of the effects of uneven blade spacing on the acoustic and aero-thermodynamic characteristics of high-speed, high-pressure-ratio fan rotors at two selected spacing configurations. A test rig, consisting of inlet guide vanes and transonic rotor blades, was employed to explore the redistribution of ...
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