THREE-PHASE INVERTER MODEL PREDICTIVE VOLTAGE CONTROL BASED ON NONLINEAR DISTURBANCE OBSERVER

Cheng Yong; Zhou Zeyu; Du Guanghui; Zhu Qun

doi:10.19912/j.0254-0096.tynxb.2025-0658

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Acta Energiae Solaris Sinica ›› 2026, Vol. 47 ›› Issue (9) : 473-481. DOI: 10.19912/j.0254-0096.tynxb.2025-0658

THREE-PHASE INVERTER MODEL PREDICTIVE VOLTAGE CONTROL BASED ON NONLINEAR DISTURBANCE OBSERVER

Cheng Yong, Zhou Zeyu, Du Guanghui, Zhu Qun

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Abstract

To address the problem that traditional model predictive control cannot maintain prediction accuracy when parameters change, a model predictive voltage control strategy incorporating a nonlinear disturbance observer is proposed. First, a nonlinear disturbance observer is designed for three-phase inverters. It utilizes measurements of the inverter-side current and load terminal voltage to estimate the load current in real time, thereby suppressing parameter disturbances and ensuring the accuracy of prediction results. Second, to solve the problem of unreasonable reference voltage acquisition, a droop control method is adopted to generate the reference voltage. Subsequently, combining the inverter capacitor voltage model with parameter disturbance estimation, the voltage prediction equation is reformulated. The value function is also optimized to reduce computational load and enhance the control performance of the system. Finally, simulations and experiments verify the effectiveness of the designed nonlinear disturbance observer and the proposed voltage control strategy.

Key words

model predictive voltage control / nonlinear disturbance observer / disturbance rejection / droop control / value function design / three-phase inverter

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Cheng Yong, Zhou Zeyu, Du Guanghui, Zhu Qun. THREE-PHASE INVERTER MODEL PREDICTIVE VOLTAGE CONTROL BASED ON NONLINEAR DISTURBANCE OBSERVER[J]. Acta Energiae Solaris Sinica. 2026, 47(9): 473-481 https://doi.org/10.19912/j.0254-0096.tynxb.2025-0658

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