摘要：AbstractThis paper proposes a model predictive control (MPC) method using a robust disturbance observer to control the current output of a grid-connected inverter. Firstly, the parameter uncertainties are expressed as possible ranges of resistor, inductor and capacitor values. Secondly, a robust disturbance observer is designed to estimate the lumped disturbance term caused by model uncertainties and the grid voltage disturbance. In addition, the disturbance observer gain, and a weight matrix of the MPC cost function are obtained by applying the Linear matrix inequality (LMI) optimization method. Thirdly, a reference state, which satisfies the control objective of the currents output regulation are derived. Finally, the effectiveness of the proposed MPC method is proven by simulation result.
关键词：Keywordsmodel predictive control (MPC)robust disturbance observerthree-phase inverterinductive-capacitive-inductive (LCL) filter
