RESEARCH ON OFF-GRID MASTER-SLAVE CONTROL STRATEGY OF SINGLE-STAGE CURRENT-SOURCE MULTI-INPUT INVERTER

Qiu Yanhui; Shao Yixiong; Zeng Hanchao; Huang Qinjian

doi:10.19912/j.0254-0096.tynxb.2025-0139

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Acta Energiae Solaris Sinica ›› 2026, Vol. 47 ›› Issue (6) : 68-77. DOI: 10.19912/j.0254-0096.tynxb.2025-0139

RESEARCH ON OFF-GRID MASTER-SLAVE CONTROL STRATEGY OF SINGLE-STAGE CURRENT-SOURCE MULTI-INPUT INVERTER

Qiu Yanhui^1,2, Shao Yixiong^1,2, Zeng Hanchao^1,2, Huang Qinjian³

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Abstract

Concerning the common-mode current problem and the magnetic saturation problem of energy storage inductor in the single-stage current-source inverter, a multi-input current-source inverter with bypass switches and multi-winding high-frequency transformers is adopted. Concerning the energy management and the loop decoupling problem of the multi-energy system, a one-cycle control and master- slave power energy management strategy based on power ratio is proposed, which aims to realize the stable operation of different power supply modes, smooth transformation of different power supply modes, and decoupling operation of the control-loop. The intensive theoretical analysis of the circuit structure, energy management control strategy, and small-signal model of the system is carried out, the control loop of the system is designed, and finally a 2.5 kVA prototype of single-stage current-source inverter with photovoltaic-wind dual-input is developed to validate the adopted circuit topology and energy management control strategy.

Key words

single-stage current source inverters / multiple-input / circuit topology / master-slave power energy management / one-cycle control / decoupling control

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Qiu Yanhui, Shao Yixiong, Zeng Hanchao, Huang Qinjian. RESEARCH ON OFF-GRID MASTER-SLAVE CONTROL STRATEGY OF SINGLE-STAGE CURRENT-SOURCE MULTI-INPUT INVERTER[J]. Acta Energiae Solaris Sinica. 2026, 47(6): 68-77 https://doi.org/10.19912/j.0254-0096.tynxb.2025-0139

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