COMPARISON OF A PARTLY LAMINATED SQUIRREL CAGE ROTOR AND A COPPER COATED SOLID STEEL ROTOR FOR A 50 KW HIGH-SPEED COMPRESSOR

摘要

The aim of the project was to develop better rotor constructions for high-speed electric motors. A partly laminated squirrel cage rotor was designed and manufactured. Operating characteristics of a 50 kW, 30600 rpm motor were measured for a copper coated solid steel rotor and for the partly laminated squirrel cage rotor. It was found that the partly laminated rotor had adequate mechanical properties and better electromagnetic properties. While mechanical ageing of the laminated rotor design was not studied, it seemed a reasonable alternative for solid rotor designs in high-speed electric motors.