Design of discrete-time current controllers for induction motor drives based on an individual channel analysis approach

In this work a design method for discrete-time current controllers in induction motor drives is addressed. The method of individual channel analysis and design is used in order to represent the IM model as two single-input single-output (SISO) linear systems. Then, based on the obtained transfer functions, the controllers are designed in order to control the original multiple-input multiple-output system as if they were two SISO systems decoupled from each other. Therefore, the method allows to apply classical control techniques for the design of the controllers and simplify the analysis of the system. By following this approach, simple deadbeat controllers are proposed, analyzed and validated by simulation results.

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