the vector control of three-phase salient pole synchronous machines supplied by pulse-width- modulated voltage source inverters

in this paper, computer simulation of a three-phase synchronous motor drive is described. this drive/system is supplied with a new type of pulse-width modulated voltage source inverter (pwm vsi) whose amplitude of the first harmonic, compared to a conventional sinusoidal pwm vsi, is increased by about 17% and whose amplitude of higher harmonics is also reduced inversely proportional to their orders. this system has low torque pulsations and approximately has a unity power factor at operation below the base speed. in addition, it has a dynamic performance very close to dc drives with quick dynamic response.