Studying the Parameters of a Transverse Flux Synchronous Wind Generator for the Arctic Region

The design of transverse flux electric machines allows for higher torque densities and is considered promising for an 800 kW, 690 V, 150 rpm synchronous generator designed for the Arctic region wind power applications. A comparative analysis of the machine parameters for two topologies having magnetic flux concentration is performed. Magnetization is provided along the magnet length; the magnet length is equal to the winding width; the stator tooth is located along the rotor radius. In one topology, the arrangement of stators relative to the rotor is two-sided, and in the other, one-sided. Electromagnetic calculations of the generator for both topologies were carried out with a wide variation range of input variables: the air gap size, the stator external diameter, and the permanent magnets length. For both topologies, with a decrease in the diameter and air gap, the consumption of materials decreases, and with a decrease in the magnet length, the masses of magnets and copper decrease, and the mass of steel increases. For the topology with one-sided arrangement of stators, the overall axial size is decreased by almost a half; in addition, a saving of active materials is obtained. In terms of the active materials mass, both topologies are inferior to the generator with a longitudinal flux; in terms of torque density, only the topology with one-sided arrangement of stators outperforms the indicators of the machine with a longitudinal flux (for any calculated length of magnets) by 1.23-1.7 times.