Vector Control Of Induction Motor
Three-phase AC induction motors (ACIM) are popular in industry for a number of reasons. Their construction is extremely optimized, since they have been produced for years. They are very simple and manufacturing costs are favorable. They have no brushes and require minimum maintenance. The robustness of the motor is another strong advantage. We would find induction motors mostly in applications such as water pumps, compressors, fans and air-conditioning systems. In order to achieve variable speed operations in a three-phase AC induction motor, a variable voltage and variable frequency needs to be supplied to the motor. Modern three-phase variable speed drives (VSD) are supplied with digitally controlled switching inverters. The control algorithms can be sorted into two general groups. The first group is referred to scalar control. The constant Volt per Hertz control is a very popular technique representing scalar control. The other group is called vector or field oriented contr...
