CONTROL STRATEGY OF WIND-SOLAR HYDROGEN PRODUCTION SYSTEM BASED ON ADAPTIVE VIRTUAL SYNCHRONOUS GENERATOR

Li Linlin; Zhang Xuexia

doi:10.19912/j.0254-0096.tynxb.2024-1998

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Acta Energiae Solaris Sinica ›› 2026, Vol. 47 ›› Issue (3) : 155-163. DOI: 10.19912/j.0254-0096.tynxb.2024-1998

CONTROL STRATEGY OF WIND-SOLAR HYDROGEN PRODUCTION SYSTEM BASED ON ADAPTIVE VIRTUAL SYNCHRONOUS GENERATOR

Li Linlin, Zhang Xuexia

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Abstract

The large-scale wind-solar hydrogen production system is connected to the power grid, and the power grid has low inertia and weak damping, which affects the stability of the frequency of the system. To address this problem, a control strategy for a wind-solar hydrogen production system is proposed in this paper, which is based on a virtual synchronous generator with an adaptive moment of inertia and an adaptive damping coefficient. First, the inertia and damping characteristics are introduced into the grid-connected inverter control loop of the wind-solar hydrogen production system, so that the system has the inertial support characteristics similar to the synchronous generator. Then, considering the expansion of the scale of the wind-solar hydrogen production system and the improvement of the adjustment range and speed, according to the dynamic response characteristics of the inertia damping coefficient when the disturbance occurs, the inertia damping adaptive control rule is designed to expand the inertia adjustment range of the system, improve the disturbance compensation, and accelerate the recovery speed. The simulation results show that the proposed control method can effectively reduce the oscillation amplitude of the power-frequency response curve while ensuring stable operation of the large-capacity wind-solar hydrogen production system. While increasing the response regulation range of the system, the speed of system response and recovery is also guaranteed.

Key words

wind power / photovoltaics / hydrogen production / virtual synchronous generator / adaptive control system / virtual inertia and damping / power-frequency response

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Li Linlin, Zhang Xuexia. CONTROL STRATEGY OF WIND-SOLAR HYDROGEN PRODUCTION SYSTEM BASED ON ADAPTIVE VIRTUAL SYNCHRONOUS GENERATOR[J]. Acta Energiae Solaris Sinica. 2026, 47(3): 155-163 https://doi.org/10.19912/j.0254-0096.tynxb.2024-1998

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