Equivalent Model and Maximum Wind Power Tracking Control Mechanism of Grid-Connected PMSWG

Abstract:

Based on the speed control system of grid connected direct-drive wind permanent magnet synchronous generators, it is proposed and built up that boost chopper generating equivalent as the model of DC generator. Analyzing the dynamic process of the boost chopper generating equivalent as DC generator, it reveals the relationships between intrinsic variables and puts forward that increasing boost chopper control duty ratio D, namely, increasing the energy storage time of inductance L, and reducing released energy time relatively, it will increase the armature current of the generator, otherwise, it will reduce the current in the current continuous situation. At the same time, according to the principle of maximal wind energy tracking, the paper reveals the control mechanism of maximum wind power tracking of the wind generators. A theoretical basis is provided for the realization of the control of the wind power maximum wind energy tracking.

• Periodical: Applied Mechanics and Materials (Volumes 303-306)
• Pages: 1171-1174
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.303-306.1171
• Online since: February 2013
• Authors: Jian Ye Liu, Yun Shan Li, Xiao Gu, Chun Miao Li
• Keywords: Boost Chopper, Equivalent Model, Maximum Wind Power Tracking, Permanent Magnet Direct-Drive Wind Power System

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