A generalized synchronous drive architecture that treats excitation as a design variable rather than a fixed material choice.
Procedural visualization of a salient pole synchronous machine with multiple excitation sources. Illustrative, not a production geometry.
Modern high performance motion control is built almost entirely on permanent magnet synchronous machines, and those machines depend on a rare earth supply chain concentrated in a single country across mining, processing, magnet production and logistics. Inspired Aegis develops a generalized synchronous drive architecture that combines multiple independent flux sources with engineered rotor saliency to recover the great majority of permanent magnet torque density using only widely available ferrite. The same architecture instantiates across power levels and applications, from small aerial platforms to traction, because the machine, the power converter and the control are designed as one system rather than three.
Conventional practice fixes the excitation source, a permanent magnet, and designs everything else around it. The generalized formulation admits four independent flux sources and treats the allocation between them as an optimization variable. Every conventional topology falls out as a special case.
Torque decomposes into an excitation term and a reluctance term. Engineering the rotor geometry to raise the saliency ratio recovers torque that a surface mount design discards, which is what closes most of the gap when the rare earth magnet is removed.
Multiple excitation sources require coordinated current allocation, which is a control problem rather than a machine problem. The drive architecture carries the estimation, allocation and fault handling that makes the machine practical, and the same structure instantiates across power levels.