Steady regimes of a Savonius rotor-based wind power generator with voltage stabilizer

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Abstract

A small-scale wind power generator is studied, where the operating element is a Savonius rotor. The electric circuit of the generator comprises a voltage stabilizer and a load resistance. Based on phenomenological considerations, a mathematical model of this electro-mechanical system is constructed. In the result of analytical study of this model, it is shown that the hysteresis phenomenon occurs in this system under certain conditions imposed on parameters. It should be noted that this hysteresis is due to the presence of the voltage stabilizer. A series of experiments is performed. Based on the obtained experimental data, parameters of the proposed model are identified. Results of experiments are in good agreement with results of the analytical study. An algorithm of regulation of the load resistance is proposed aimed at reaching the maximum output power.

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About the authors

V. M. Budanov

Institute of Mechanics of Lomonosov Moscow State University

Email: seliutski@imec.msu.ru
Russian Federation, Moscow

A. P. Holub

Institute of Mechanics of Lomonosov Moscow State University

Email: seliutski@imec.msu.ru
Russian Federation, Moscow

M. Z. Dosaev

Institute of Mechanics of Lomonosov Moscow State University

Email: seliutski@imec.msu.ru
Russian Federation, Moscow

K. V. Klimov

Institute of Mechanics of Lomonosov Moscow State University

Email: seliutski@imec.msu.ru
Russian Federation, Moscow

Y. D. Selyutskiy

Institute of Mechanics of Lomonosov Moscow State University

Author for correspondence.
Email: seliutski@imec.msu.ru
Russian Federation, Moscow

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Supplementary files

Supplementary Files
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2. Fig. 1. Scheme of the considered system

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3. Fig. 2. The dependence of the voltage at the output of the stabilizer on the voltage at the input

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4. Fig. 3. Dependences of input voltage and current on angular velocity: a – ; b –

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5. Fig. 4. Dependences on speed at different values of load resistance

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6. Fig. 5. Bifurcation diagram of stationary modes

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7. Fig. 6. Dependence on load resistance for generator 1: points – experimental data, straight line – approximation (3.2)

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8. Fig. 7. The dependence of the voltage at the output of the stabilizer on the voltage at the input

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9. 8. Dependences of the stabilizer input current on the angular velocity of the generator shaft at different load resistance values

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10. Fig. 9. Laboratory installation with a Savonius rotor in a wind tunnel

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11. 10. Dependence on load resistance for generator 2: points – experimental data, straight line – approximation (3.2)

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12. Fig. 11. Dependence of speed in stationary modes on the dimensionless load resistance (stabilizer disabled)

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13. Fig. 12. Dependence of speed in stationary modes on the dimensionless load resistance (stabilizer is on)

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