Abstract
This paper first describes a general method for the design of a synchronous reluctance rotor, which uses the field lines in an anisotropic rotor to shape the flux barriers and combines this with known design rules from the literature. This straightforward method is now used to design a rotor for the stator of a three-phase, four-pole, 11 kW standard induction machine. In some electromagnetic studies the influence of the essential rotor parameters (number of flux barriers, ratio of the magnetically non-conductive material in the rotor and the used method for the radial width ratios of adjacent barriers) is analyzed by means of finite element simulations in order to find a suitable rotor topology. In addition, the dimensioning of the mechanical ribs is discussed to manufacture a prototype rotor, which is then inserted into the stator of the cage induction machine. Finally, both the reluctance rotor and the squirrel cage rotor of the induction machine are used to present measurement results for the heating at the rated point and the efficiency at normalized operating points, so that both types of machines can be compared.
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