Comments on three-arm ac automatic voltage regulator

Some errors in the three-arm automatic voltage regulator in the paper "Three-Arm AC Automatic Voltage Regulator" by Wu et al. (IEEE Trans. Ind. Electron, vol. 58, no. 2, pp. 567-575, Feb. 2011) are pointed out, and a technique for correcting these errors is given.X1111sciescopu