NDLI: New Constant Electrical Power Soft-Stalling Control for Small-Scale VAWTs

Content Provider	IEEE Xplore Digital Library
Author	Ahmed, A. Li Ran Bumby, J.R.
Copyright Year	1986
Abstract	This paper presents a constant power soft-stall control scheme for a vertical-axis wind turbine (VAWT) fitted with a permanent magnet generator. Small-scale VAWTs are attractive due to their ability to capture wind from different directions without using yaw; this simplifies the design and gives the turbine tolerance to turbulence in urban areas. One difficulty with VAWTs is to prevent overspeeding and component overloading at excessive wind velocities. This paper suggests that necessary control can be achieved by controlling the electric power in order to operate the turbine in the stall region. This control strategy attenuates the stress in the system, while smoothing the power generated. It is shown that the controller can stabilize the nonlinear system using an adaptive current feedback loop. The controller does not need wind velocity or turbine speed, but is based on the current and voltage measured on the dc side of the rectifier connected to the permanent magnet synchronous generator. Maximum power point tracking (MPPT) control is provided in normal operation. Simulation and experimental results are presented.
Sponsorship	IEEE Power Engineering Society
Starting Page	1152
Ending Page	1161
Page Count	10
File Size	927063
File Format	PDF
ISSN	08858969
Volume Number	25
Issue Number	4
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-12-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Wind turbines Permanent magnets Power generation Wind energy generation Wind speed Control systems Urban areas Stress control Power smoothing Nonlinear control systems vertical-axis wind turbine (VAWT) High-wind velocity control permanent magnet synchronous generator (PMSG) power control soft stalling
Content Type	Text
Resource Type	Article
Subject	Energy Engineering and Power Technology Electrical and Electronic Engineering

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