Modeling of small wind turbines based on PMSG with diode bridge for sensorless maximum power tracking

RENEWABLE ENERGY

卷:55

Article

Urtasun, Andoni¹  Sanchis, Pablo¹  San Martin, Idoia¹  Lopez, Jesus¹  Marroyo, Luis¹ 

[1] Univ Publ Navarra, Dept Elect & Elect Engn, Pamplona 31006, Spain

关键词: Boost converter;    Diode bridge;    MPPT;    PMSG;    Sensorless control;    Variable speed wind generation;   

DOI  :  10.1016/j.renene.2012.12.035

来源: Elsevier

【 摘 要 】

The Permanent Magnet Synchronous Generator (PMSG) with diode bridge is frequently used in small Wind Energy Conversion Systems (WECS). This configuration is robust and cheap, and therefore suitable for small WECS. In order to achieve Maximum Power Point Tracking (MPPT) with no mechanical sensors, it is possible to impose the relationship between the DC voltage and the DC current on the optimum operating points. However, this relationship is difficult to calculate theoretically since the whole system is involved. In fact, as there is no model of the whole system in the literature, the optimum curve I*(L)(V-dc) is obtained with experimental tests or simulations. This paper develops an accurate model of the whole WECS, thereby making it possible to relate the electrical variables to the mechanical ones. With this model, it is possible to calculate the optimum curve I*(L)(V-dc) from commonly-known system parameters and to control the system from the DC side. Experimental results validate the theoretical analysis and show that maximum power is extracted for actual wind speed profiles. (C) 2013 Elsevier Ltd. All rights reserved.

【 授权许可】

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