A speed performance comparative of field oriented control and scalar control for induction motors

Many schemes have been proposed to control induction motors, however all these systems this kind of motors consist in complex systems. One of the most precise control schemes is the Field Oriented Control (FOC), although Scalar Control (SC) is simple compared to the construction of the FOC and others. In this work a SC and a FOC for induction motors are implemented. The goal of this study is to identify the advantages and disadvantages of each controller in conditions such as: load changes, open loop, with or without encoder in a speed profile. Each controller was implemented on the same motor with commercial equipment. Each response is analyzed and explained by graphics considering the performance in different speeds and the response to compensate changes in load.