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Abstract:
In order to suppress microgrid resonance and bus voltage fluctuation and further improve system stability,a novel resonance suppression strategy based on fully reduced order hybrid control algorithm is proposed. The output voltage of LRC is controlled,and the current prediction model is introduced into the inner loop to improve the dynamic response speed of the system and eliminate the PWM modulator and parameter setting,so as to realize the unit of the inner loop of current. The inverse model of the controlled object is constructed in the outer loop to realize the unitization of the voltage outer loop under the control of two-degree-of-freedom. The bus voltage can completely follow the reference voltage and restrain the resonance peak in the voltage transfer function and the bus voltage fluctuation. Finally,the proposed fully reduced order hybrid control algorithm is simulated and verified on Matlab∕Simulink platform. The results show that the proposed control strategy can effectively suppress the DC microgrid resonance and bus voltage fluctuation,and improve the dynamic characteristics and anti-interference ability of the microgrid. © 2024 Science Press. All rights reserved.
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Acta Energiae Solaris Sinica
ISSN: 0254-0096
Year: 2024
Issue: 11
Volume: 45
Page: 61-72
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ESI Highly Cited Papers on the List: 0 Unfold All
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30 Days PV: 3
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