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Advanced Motors Promise Top Performance

Drawing on recent advances in materials and electronic controls, a new generation of high-efficiency ac motors is on the threshold of commercial introduction. A number of innovative designs, all of which feature advanced power electronic converters, are being developed for applications that range from small hand tools to major home appliances to motor drives for large industrial processes. The new motors` capability for efficient variable-speed operation promises performance well beyond that of conventional ac units, especially when the power electronics and motors are optimized to the size and operational needs of the application. EPRI is pursuing such integration, working with researchers, motor manufacturers, and end-use equipment producers to simultaneously address electronic, mechanical, manufacturing, packaging, and cost concerns. The result is expected to be a variety of clearly superior motors that can compete successfully with conventional units in the marketplace.