Field weakening control of pm generator used for small wind turbine aplication

N. Milivojevic, N. Schofield, I. Stamenkovic, Y. Gurkaynak

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

12 Citations (Scopus)


Small wind turbines (in the range 2-50kW) harvest wind energy to provide carbon free energy for residential and small commercial applications and remote or developing economies. Current state-of-the art technologies generally utilize simple diode bridge rectification of the output from brushless permanent magnet (PM) generators and grid connection via DC-DC converters and voltage source inverters. Such simplified systems do not utilize the full capacity of the generator, power conversion electronics and therefore the turbine due, in part, to inappropriate or simplified control but also generator over-design for protection/safety reasons. This paper presents a different approach to the design procedure for a wind turbine generator drive system that actively controls the generator upto and above the system base speed imposed by the (electrical) supply voltage constraint. The paper demonstrates the impact of wind generator power characteristics over the annual energy production. In addition, it shows the reasons for field weakening control of a PM generator, that is verified experimentally using a market available system.

Original languageEnglish
Title of host publicationIET Conference on Renewable Power Generation, RPG 2011
PublisherInstitution of Engineering and Technology
Number of pages8
Edition579 CP
ISBN (Electronic)9781849195362
Publication statusPublished - 23 Jan 2012
Externally publishedYes
EventIET Conference on Renewable Power Generation - Edinburgh, United Kingdom
Duration: 6 Sep 20118 Sep 2011


ConferenceIET Conference on Renewable Power Generation
Abbreviated titleRPG 2011
Country/TerritoryUnited Kingdom


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