Strategies and a computer aided package for design and analysis of induction machines for inverter-driven variable speed systems

Induction machines designed for inverter-driven variable speed systems is different from those powered directly from utility power lines. In this paper, the design strategies of inverter-driven induction machines are discussed. This is followed by a description of a computer aided design and analysis package specifically for this purpose. The program package permits integration design of machines with inverters, comprehensive performance analysis, and system optimization, resulting in 20-30% more power density for the induction machine than that designed for direct utility power supplies by conventional methods. Design and performance analysis results are presented to substantiate the conclusions.