Hiroshi Yoda
Magnetic Levitation Lab., Maglev Systems Technology Div.,
Railway Technical Research Institute
Abstract
With the aim of achieving carbon neutrality by 2050, the railway sector—already an energy-efficient mode of transportation—is advancing technological development for further energy savings. Squirrel-cage induction motors are the most widely used drive motors in modern rolling stocks, so improving their energy efficiency has a significant impact. We will present the results of studies on the reduction of losses and torque pulsation by inserting magnetic wedges into the stator slots of the multi-slot high-efficiency induction motor we have been developing. These results were obtained through the JMAG analysis using a large-scale FEA model.
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