Current equalization in SPWM FACTS controllers at lowest switching rates

This paper shows that sinusoidal pulsewidth modulation (SPWM) flexible AC transmission system (FACTS) controllers can be synthesized by employing the phase-shifted triangle carrier technique to multiconverters at a switching rate of only three pulses. The options of parallel, series and series/parallel module connections are examined for current equalization. This paper presents simulation and experimental results.