Human powered axial flux permanent magnet machines: Review and comparison

This paper presents a review of concepts for harvesting power from human movement and comparison of three axial flux permanent magnet machine (AFPM) designs. Some schemes for human power generating systems have been presented and compared in order to choose the most suitable configuration for our application. From the concepts evaluated, choices were made based on project specifications in the design of three axial flux permanent magnet (AFPM) machines with an output of 60W at a rotational speed of 3000 rpm. Comparison of the three AFPM generators: singled-sided with distributed winding, single-sided with concentrated windings, and double-sided (TORUS) with air gap winding show that the AFPM with concentrated windings and the TORUS are attractive having low mass and low losses.