ROBUST MODEL PREDICTIVE CONTROL OF THREE-PHASE GRID-CONNECTED INVERTER BASED ON SLIDING MODE DISTURBANCE OBSERVER

Wei Xinwei; Tao Wanyu; Guo Xinyu; Huang Xucheng

doi:10.19912/j.0254-0096.tynxb.2025-0281

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Acta Energiae Solaris Sinica ›› 2025, Vol. 46 ›› Issue (10) : 117-127. DOI: 10.19912/j.0254-0096.tynxb.2025-0281

ROBUST MODEL PREDICTIVE CONTROL OF THREE-PHASE GRID-CONNECTED INVERTER BASED ON SLIDING MODE DISTURBANCE OBSERVER

Wei Xinwei¹, Tao Wanyu¹, Guo Xinyu¹, Huang Xucheng²

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Abstract

A robust MPC for three-phase grid-connected inverter system is proposed to address the high dependence on system model of traditional MPC in this paper. The dynamic sliding mode disturbance observer is designed to observe the centralized disturbance caused by the parameter mismatch of three-phase grid-connected inductor, and the disturbance observation is compensated to the system predictive model. At the same time, the active current and reactive current output control of the three-phase grid-connected inverter are incorporated into the cost function of MPC. The cost function values are evaluated for all valid switch states, then the optimal switch state that minimizes the cost function will be selected to trigger the grid-connected inverter. Finally, a 10 kW three-phase grid-connected inverter experimental platform is built to verify the feasibility and effectiveness of the proposed robust MPC.

Key words

grid-connected inverter / robustness / model predictive control / sliding mode disturbance observer

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Wei Xinwei, Tao Wanyu, Guo Xinyu, Huang Xucheng. ROBUST MODEL PREDICTIVE CONTROL OF THREE-PHASE GRID-CONNECTED INVERTER BASED ON SLIDING MODE DISTURBANCE OBSERVER[J]. Acta Energiae Solaris Sinica. 2025, 46(10): 117-127 https://doi.org/10.19912/j.0254-0096.tynxb.2025-0281

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