Best-in-Class Materials for Power and Torque-Dense Generators and APUs

Higher power and torque delivery facilitate increased power generation. Our high-performance alloys and stator and rotor stacks for generators and auxiliary power units (APUs) enable smaller, lightweight designs without compromising on performance. Soft magnetic alloys with low core loss generate less heat to facilitate higher continuous power operation for extended use. Lower motor temperatures also increase the lifespan and decrease maintenance costs.

Aircraft generator and APU designs operate at a standard frequency of 400Hz. The electrical power output and size requirements for generators at this frequency are typically obtained with 0.15mm thick iron-cobalt alloys. With more-electric aircraft, the industry is moving toward higher frequency 800Hz on-board electrical systems that require thinner laminations to minimize core losses and deliver reliable, compact, and high-efficiency generators. Our stator and rotor stack processing techniques are engineered for laminations under 0.15mm thick to meet demanding needs.

Some aircraft generators couple with mechanical driven shafts that impart high torque on the rotor. These designs require high-magnetic-induction and high-mechanical-strength alloys to meet reliability, power generation, and size requirements. Our expertise in alloy formulation and thermal annealing cycles results in alloys and stacks that optimally combine magnetic and mechanical properties for generators that specify higher strength.