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Sustainability 2018, 10(3), 594;

Comparative Study of Frequency Converters for Doubly Fed Induction Machines

Czech Technical University in Prague, 166 36 Prague, Czech Republic
Author to whom correspondence should be addressed.
Received: 21 January 2018 / Revised: 19 February 2018 / Accepted: 22 February 2018 / Published: 26 February 2018
(This article belongs to the Collection Power System and Sustainability)
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The efficient utilization of energy sources seems to be one of the most challenging problems for designers and scientists alike. This challenge particularly applies to power electronics, where the increasing value of energy density leads to demands for optimization processes and better exploitation (and distribution) of available power sources. As a result, the implementation of frequency-controlled systems is more often in the spotlight. The systems with doubly fed induction machines and a frequency converter in the rotor circuit are typical representatives of these demands. In a wide spectrum of power electronic systems, frequency converters are often used that have a constant current, a diode rectifier, and a thyristor inverter. This article provides a novel approach to modeling methodology, and presents a unique comparison of four different frequency converter schemes that are connected to a doubly fed induction machine. This article presents the modeling methodology itself, as well as the results based on an asynchronous generator motor fed by different frequency converters, a spectral analysis of the output voltage of the used frequency converters, and a comparison of the different technologies. Based on the above, this paper recommends the use of a multistage-multilevel frequency converter scheme. View Full-Text
Keywords: doubly-fed induction machines; frequency converter; output voltage spectral analysis doubly-fed induction machines; frequency converter; output voltage spectral analysis

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Nahdi, T.; Maga, D. Comparative Study of Frequency Converters for Doubly Fed Induction Machines. Sustainability 2018, 10, 594.

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