DC-LINK VOLTAGE CONTROL OF PHOTOVOLTAIC GRID-CONNECTED INVERTER BASED ON IMPROVED ACTIVE DISTURBANCE REJECTION

Zhou Xuesong; Liu Qian; Ma Youjie; Xie Bingjie

doi:10.19912/j.0254-0096.tynxb.2021-0394

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Acta Energiae Solaris Sinica ›› 2022, Vol. 43 ›› Issue (10) : 65-72. DOI: 10.19912/j.0254-0096.tynxb.2021-0394

DC-LINK VOLTAGE CONTROL OF PHOTOVOLTAIC GRID-CONNECTED INVERTER BASED ON IMPROVED ACTIVE DISTURBANCE REJECTION

Zhou Xuesong, Liu Qian, Ma Youjie, Xie Bingjie

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Abstract

Aiming at the problem that the control performance of the DC bus voltage is negatively affected, an improved active disturbance rejection control （ADRC） strategy is proposed to enhance the control stability of the DC-link voltage. The cascaded extended state observer is employed to supple the residual disturbance that is not estimated under the traditional method, thereby improving the disturbance estimation ability. Finally, the effectiveness and feasibility of the proposed strategy are verified by theoretical analysis and simulation results.

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Zhou Xuesong, Liu Qian, Ma Youjie, Xie Bingjie. DC-LINK VOLTAGE CONTROL OF PHOTOVOLTAIC GRID-CONNECTED INVERTER BASED ON IMPROVED ACTIVE DISTURBANCE REJECTION[J]. Acta Energiae Solaris Sinica. 2022, 43(10): 65-72 https://doi.org/10.19912/j.0254-0096.tynxb.2021-0394

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