Model-free subspace-based control scheme for grid-connected voltage source inverters

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Chen, Jianmin
Yang, Fuwen
Han, Qing-Long
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Cheng, D

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2012
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Beijing, PEOPLES R CHINA

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Abstract

In this paper, both model-free subspace-based LQG control and H∞ control schemes are used to investigate the tracking control performance and robustness of grid-connected voltage source inverters (VSIs). The proposed approaches do not require any identification or other modeling process. The controller can be directly derived from the experimental inputs/outputs measurements. Both the subspace-based LQG controller and H∞ controller are recursively designed. Simulation results show subspace-based LQG controller has a better tracking control performance than subspace-based H∞ controller, whereas, H∞ controller has stronger robustness than LQG controller.

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PROCEEDINGS OF THE 10TH WORLD CONGRESS ON INTELLIGENT CONTROL AND AUTOMATION (WCICA 2012)

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1st

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Electrical and Electronic Engineering not elsewhere classified

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