Vector Control of 3-Phase Induction Motor

Induction motor is the key point when it comes to industrial applications and when an electrical drives system is to be designed we can represent induction motor in both mathematical and graphical models. In vector control strategy it's analysis can be done in either of the two methods i.e, symmetrical three-phase or unsymmetrical two-phase version. As the induction motor is nonlinear we need to control in a linearized manner as a DC motor. The objective is to develop a new model to make it suitable for the vector control method. This control principle suggests that the d-q areas unified approach for all kinds of induction motors. Space vector modulation is a very effective tool in the modeling of symmetrical induction motors. Electrical motors analyzed and described considering various types of reference frames and state-space analysis with different types of mathematical modeling are explained. The vector control strategy is implemented practically by digital signal processors (DSP). By using these discrete models, a mathematical model of induction motor is implemented to obtain high-efficiency drives and stability is also analyzed.