Peak current mode control of three-phase boost rectifiers in discontinuous conduction mode for small wind power generators

• Published in: Applied energy Vol. 87; no. 8; pp. 2728 - 2736
• Main Authors: Carranza, O., Garcerá, G., Figueres, E., González, L.G.
• Format: Journal Article
• Language: English
• Published: Kidlington Elsevier Ltd 01-08-2010; Elsevier
• Series: Applied Energy
• Subjects: Applied sciences; Direct energy conversion and energy accumulation; Electrical engineering. Electrical power engineering; Electrical machines; Electrical power engineering; Energy; Exact sciences and technology; Harmonics; Harmonics Power factor correction Wind generation systems; High voltage or high current generators; Miscellaneous; Natural energy; Power factor correction; Regulation and control; Various equipment and components; Wind energy; Wind generation systems; Power factor correction; Harmonics; Wind generation systems; Rectifying circuits; Power system harmonics; Power system stability; Wind generator; Inductor; Varying speed; Discontinuous mode; Wind energy; Current mode; Power factor regulation; Switching noise; Energy quality; Harmonic distortion; Power factor; Series resistance; Inward current; Electric generator; Rectifier; Permanent magnet generators; Power electronics; Current control; Harmonics suppression; Electrical network; Mechanical stress; Three phase circuit; Service quality
• ISSN: 0306-2619; 1872-9118
• DOI: 10.1016/j.apenergy.2010.02.010

This paper presents a peak current mode control scheme of a boost rectifier with low distortion of the input current for wind power systems based on permanent magnet synchronous generators with variable speed operation. The three-phase boost rectifier is operated in discontinuous conduction mode (DCM), and power factor correction techniques are applied. It is shown that the DCM operation significantly reduces the total harmonic distortion of the currents in the permanent magnet synchronous generator, increasing the power factor of the system, so that the vibrations and mechanical stress of the generator are minimized. The characteristics of the DCM boost rectifier are studied considering: (1) the series resistance of the inductors; (2) the modeling and adjustment of peak current mode control yielding a stable loop; (3) the design of an input filter that reduces the switching noise in the currents of the generator.