Fuzzy-tuning current-vector control of a 3-phase PWM inverter

This paper proposes a new discrete fuzzy-tuning current-vector control (FTC) scheme for three-phase PWM inverters. The proposed current control scheme can achieve fast transient response and, at the same time, very low total harmonic distortion (THD) of output current during steady-state operation. The proposed FTC control scheme generates quasi-optimum PWM patterns by using a closed-loop control technique with instantaneous current feedback. The proposed FTC control scheme has been realized using a single-chip digital signal processor (TMS320C14) from Texas Instruments. Experimental results are given to verify the proposed fuzzy-tuning current control strategy for three-phase PWM inverters