A simple insulated thermometric method for the experimental determination of iron losses

In this paper, we present a simple, versatile and cost-effective method for the experimental determination of the no-load iron losses in a PM machine. The proposed technique also enables obtaining the iron loss distribution in the machine. The latter is based on temperature rise measurements on specific locations of an electrical machine where thermal exchanges are minimized. The method principles are described as well as its implementation in a test bench. The method is used to measure the iron losses occurring in the stator of a Clawpole transverse flux machine with hybrid stator with accurate results. The insulated thermometric method is finally used to compare the iron loss reduction offered by the use of two different stator core materials.