A New Control for Improving the Power Quality Generated by a Three-Level T-Type Inverter

A new controller based on a fractional-order synergetic (FOSC) is proposed for three-level T-type inverter using shunt active power filter (SAPF). The SAPF designed to compensate the reactive and eliminate current harmonics caused by non-linear loads, in cases of distorted or unbalanced source voltages. FOSC technique with parameters defined macro-variable robust control that operates well both transient steady-state scenarios, ensuring fast convergence closed-loop system stability. utilizes phase-locked loop (PLL) self-tuning (STF) enhance SAPF’s ability all situations involving loads voltage variations according IEEE Std. 519. was implemented verified Matlab software, where obtained results were compared conventional proportional-integral (PI) controllers different operating conditions. indicate outperformed traditional terms DC tracking minimization total harmonic distortion current.