Sho Uchiyama
Power Electronics & Drive Systems Research Dept.
Advanced Technology Research Laboratories, Research & Development Group,
MEIDENSHA CORPORATION
Abstract
Our company is developing high-speed motors that enable gearless direct-drive systems, contributing to the realization of a carbon-neutral society. As part of this effort, we are pursuing the development of even higher-speed and larger-capacity motors, and are examining the applicability of induction motors. To accommodate increased rotor speed, the adoption of a solid rotor—where the rotor core and secondary conductor are formed as a single block—is being considered. However, solid rotors raise concerns about increased eddy current losses, and detailed evaluation and countermeasure studies require three-dimensional electromagnetic analysis.
In this presentation, we will introduce the results of analyzing eddy current losses in squirrel-cage induction motors with solid rotors using both two-dimensional and three-dimensional electromagnetic field simulations.
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