Eddy-Current Loss in a Conductive Material Inserted into a U-Cored Electromagnet Device

Abstract

This paper deals with the measurement and estimation of eddy-current losses in conductive plate (e.g. Permanent Magnet (PM) or Aluminum) involved in machine in general and in those with permanent magnets in particular e.g. Permanent Magnet Synchronous Machine (PMSM). The authors presented an experimental device for evaluating eddy current losses generated in the conductive plates and in order to derive an equivalent circuit diagram leading to analytical and experimental model of by eddy currents losses in a conductive material herein the aluminum. This model based on the electrical equivalent circuit (EEC) is determined from different tests such as no-load and short-circuit tests and has allowed us to quantify the various losses created in the conductive material by using the method of separation of losses when the electromagnet is with and without the conductive plate.