Analysis of the Impact of End Effect and Power Cable Length on the Power – Speed Characteristics of Six-phase PM-SynRel

This paper deals with the investigation of the influence of different parameters such as end effect and power cable length on the machine performances. This influence is highlighted for the extra low voltage applications (< 60 V DC) using six-phase permanent magnet assisted synchronous-reluctance machines. The investigation presented in this work combines different methods such as 3D finite elements, experimental tests, and information from technical data sheets. Firstly, the machine is designed using 2D finite element analysis, and then tested using two test benches, the first one with long cables and the second with short cables. The experimental power- speed characteristics obtained by these tests are compared to those obtained with simulations. The impact of the real modulation index, end effect and power cable length on the power speed characteristics is evaluated.