| Title |
New hysteresis current control for induction motor drive with NPC Inverter |
| Abstract |
A new current controlled PWM technique with NPC(Neutral Point Clamped) st겨cture is proposed in this paper. A current continued PWM technique with neutral-point-clamped pulse-width modulation inverter composed of main switching devices which operates as switch for PWM and auxiliary switching devices to clamp the output terminal potential to the neutral point potential is described. The proposed current controller has a first and second current band. The switching pattern will be made by the first current band. According to the second current band, the output state of the switching pattern is changed into positive and negative state. This inverter output contains less harmonic content and lower switching frequency than that of conventional current controlled PWM technique at the sane current limit. The induction machine drive with proposed technique is investigated by computer simulation. |