Lynx Motion Technology

Distributed Power

SEMA-based generator system

SEMA-based generator system

An important advantage of SEMA motor technology is the capability to provide very high output efficiencies over a broad torque/speed range. Elimination of iron from the motor core means that iron-related losses are also eliminated. A number of distributed power applications from 2kW portable power to 3MW wind powered systems have been studied. In the larger systems, efficiencies in excess of 99% are achievable. The axial-flux SEMA design offers the capability to design a single unit that can accommodate a wide range of output power requirements by stacking multiple identical “slices” on a common output shaft. The high rotor inertia typical to SEMA motors also helps system stability during load pickup. The use of permanent-magnet brushless DC systems in distributed power generation offers much better regulation of the system output power for end-line power factor correction or building UPS systems for power-quality sensitive applications.

Lynx has worked with commercial partners to develop 75 and 160kW distributed power units based on ironless SEMA technology. Test units in this line have been tested to well over 98% generator efficiency at rated power. A 160 KW motor/generator developed during this effort is currently in production. Contact Lynx for details.