Three-phase four-leg active power filter based on nonlinear optimal predictive control

Digital current control of a three‐phase four‐leg voltage source inverter by using p – q – r theory

“…iii. Information regarding the prism and tetrahedron determined in the previous steps and V 1 V 2 V 3 vectors obtained by using the table for the computation of matrices for duty ratio calculation in 24 tetrahedrons are used to calculate the corresponding duty ratios of the switching vectors resulting in expressions given in (15) through (17) in [17]. The matrices used for 24 tetrahedrons duty ratio computations are used from the reference [16] and given in the Table 1 in Appendix.…”

“…A predictive current control strategy is proposed for the grid-connected four-leg inverters in [10]. For current control in three-phase four-leg VSI, modelling and sliding mode control is discussed in [11][12][13], a non-linear control approach is given in [14] and a predictive non-linear control algorithm is developed in [15]. For instantaneous power generation in three-phase four-leg VSI, three-dimensional space vector PWM (3D SVPWM) is discussed in [16][17][18], and a hysteresis control method is presented in [19].…”

Predictive Current Control With Instantaneous Reactive Power Minimization for a Four-Leg Indirect Matrix Converter

“…The continuous control set MPC [14] and non-linear MPC [15] that were previously analyzed for four-leg converters use intricate modeling as well as a modulation stage and thus they are not intuitive. Recently, predictive control has been applied to control the load of a 4Leg-IMC [16], [17].…”