Search Results - subject:"Rotor"

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Experimental investigation on a one-rotor two-stage rotary desiccant cooling system

Ge, T.S.; Dai, Y.J.; Wang, R.Z.; Li, Y. - In: Energy 33 (2008) 12, pp. 1807-1815

A one-rotor two-stage rotary desiccant cooling system (OTSDC), in which two-stage dehumidification process is realized …

Persistent link: https://www.econbiz.de/10011054132

Implementation of a Technology Impact Forecast Technique on a Civil Tiltrotor

Mavris, Dimitri N.; Baker, Andrew Paul; Schrage, Daniel P. - 1999

The methodology presented in this paper is concerned with the ability to make informed decisions early in the design time line in order to provide a feasible, viable and robust system to the customer. Increasingly, the issues of affordability, uncertainty in design and technology impact...

Persistent link: https://www.econbiz.de/10009476059

Optimised design and dimensioning of low-technology wind pumps

Valdès, L.-C.; Ramamonjisoa, B. - In: Renewable Energy 31 (2006) 9, pp. 1391-1429

This article describes the currently operational version of the low-technology wind pump of high efficiency, as presented in [Valdès L-C, Raniriharinosy K. Low technical wind pumping of high efficiency. Renewable Energy 24 (2001) 275–301]. The pump, made entirely of wood and using roller...

Persistent link: https://www.econbiz.de/10010806412

Wind velocity and rotor position sensorless maximum power point tracking control for wind generation system

Senjyu, Tomonobu; Tamaki, Satoshi; Muhando, Endusa; … - In: Renewable Energy 31 (2006) 11, pp. 1764-1775

at an optimal rotor speed. For that purpose, a rotor position and a wind velocity sensors become indispensable. However …, from the aspect of reliability and increase in cost, rotor position sensor and wind velocity sensor are not usually …

Persistent link: https://www.econbiz.de/10010807029

On the performance analysis of Savonius rotor with twisted blades

Saha, U.K.; Rajkumar, M. Jaya - In: Renewable Energy 31 (2006) 11, pp. 1776-1788

The present investigation is aimed at exploring the feasibility of twisted bladed Savonius rotor for power generation …. The twisted blade in a three-bladed rotor system has been tested in a low speed wind tunnel, and its performance has been … rotor in terms of smooth running, higher efficiency and self-starting capability as compared to that of the conventional …

Persistent link: https://www.econbiz.de/10011044352

Voltage controlled stand-alone microhydro induction generator system

Nigim, K.A. - In: International Journal of Global Energy Issues 24 (2005) 1/2, pp. 100-111

The paper discusses simulated control cases of the wound rotor self-excited induction generator WRSEIG. The generator … the rotor side, a PWM controlled resistor is connected to the rotor windings through the rotating slips and act as a slip …

Persistent link: https://www.econbiz.de/10010816874

A double-step Savonius rotor for local production of electricity: a design study

Menet, J.-L. - In: Renewable Energy 29 (2004) 11, pp. 1843-1862

conception of a small Savonius rotor (i.e. of low power) for local production of electricity. Our challenge was to design …, develop and ultimately build a prototype of such a rotor, which was considered as a complete electromechanical system. An …

Persistent link: https://www.econbiz.de/10010804464

Control of grid-connected fuel cell plants for enhancement of power system stability

Ro, K; Rahman, S - In: Renewable Energy 28 (2003) 3, pp. 397-407

This paper presents a methodology for effective control of fuel cell devices connected to an electric utility distribution network. A controller is developed for a fuel cell power plant to assist the conventional generators to damp out oscillations, which is possible by utilizing the fast...

Persistent link: https://www.econbiz.de/10010805720

Simulation of two-plane automatic balancing of a rigid rotor

Sperling, L.; Ryzhik, B.; Linz, Ch.; Duckstein, H. - In: Mathematics and Computers in Simulation (MATCOM) 58 (2002) 4, pp. 351-365

of rigid-rotor unbalance. It includes the derivation of the full system of equations of motion, the stability analysis on … analysed. The display of the Sommerfeld effect when balls come to move at a speed corresponding to rotor eigenfrequency is …

Persistent link: https://www.econbiz.de/10010748504

Analytic approach for the solution of the complex-valued strong non-linear differential equation of Duffing type

Cveticanin, L. - In: Physica A: Statistical Mechanics and its Applications 297 (2001) 3, pp. 348-360

, the self-excited vibrations of the rotor with variable shaft rigidity are considered. The analytical results of this …

Persistent link: https://www.econbiz.de/10010589545