A Novel Multi-vector Model Predictive Current Control of Three-Phase Active Power Filter

Abstract

This paper proposes the application of a novel finite control set model predictive control (FCS-MPC) strategy in active power filter (APF). In the process of APF compensating harmonic and reactive power, the traditional single vector model predictive current control (MPCC) has low tracking accuracy to harmonic current, while the multi-vector MPCC has the problems of complex calculation and long calculation time, a new multi-vector MPCC control method has proposed in this paper. Firstly, the harmonic reference value is transformed into d-q coordinate system, according to the sector, the slope is calculated and the action time is obtained. Six new expected vectors are synthesized from six effective vectors and zero vectors. The value function is established to loop and calculate the optimal virtual vector, which is applied to APF. Compared with single vector control and traditional multi-vector control, it has a wider vector action area and faster calculation speed. The compensation results and dynamic performance are improved. The simulation results show that the total harmonic distortion (THD) is low.

A Novel FCS-MPC Method of Multi-Level APF Is Proposed to Improve the Power Quality in Renewable Energy Generation Connected to the Grid

“…Generally, the difference between the DC side and the reference value is used. In this paper, the power control is performed on the DC side, the voltage regulator is controlled by the PI regulator, and the compensation is performed together with the harmonics [22]. After the objective function, the optimal switch combination is directly applied to the APF to control the APF's output compensation current to track the harmonics at the current moment and predict the next time reference signal.…”

A Comparison of Finite Control Set and Continuous Control Set Model Predictive Control Schemes for Model Parameter Mismatch in Three-Phase APF

“…APF detects harmonics based on instantaneous reactive power theory and then injects harmonics into the power grid through APF to achieve the purpose of compensating harmonics (Garcia-Cerrada et al, 2007). Since APF was put forward, many control methods have appeared, including proportional integral (PI) control, widely used in traditional industry (Garcia-Cerrada et al, 2007;Li et al, 2021). MPC is a control method developed from practice to theory with the development of the industry.…”