This paper presents an approach to the thermal design of an AC machine where the application requires low-duty transient operation. To provide accurate temperature predictions the design process has been informed with experimental data from tests on a stator-winding sector (motorette). These have been shown to be a time and cost-effective means of calibrating the thermal model of a full machine assembly, prior to manufacture of the final design. Such an approach is usually adopted in design analysis of machines with a concentrated winding topology. Here, the motorette testing has been extended to a machine with a distributed winding.
- thermal design
- AC machines
- motorette assembly
- lumped parameter thermal model
- permanent magnet machines
- shortduty transient operation