Improved Model Predictive Control With Signal Correction Technique of LC-Coupling Hybrid Active Power Filter

Abstract

In this article, an improved model predictive control (MPC) with signal correction technique for an <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">LC</i> -coupling hybrid active power filter ( <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">LC</i> -HAPF) is proposed, which can track the reference compensating current with fast dynamic response and low steady-state error. The conventional MPC causes a certain degree of steady-state error due to the error from discretization and prediction. To solve this problem, a signal correction technique is proposed to improve the compensation performance of the MPC for the <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">LC</i> -HAPF. First, the model of the <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">LC</i> -HAPF for implementing the MPC is deduced in this article. Then, the control objective and the design methodology of the improved MPC are presented. After that, the stability and parameter design of the improved MPC is analyzed and discussed. Finally, the compensation performance of the proposed improved MPC for the <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">LC</i> -HAPF is verified by simulation and experimental results in comparison with the conventional MPC and other representative current controllers.