SEMA, short for Segmented ElectroMagnetic Array, is a unique architecture for permanent magnet electric motors and controllers for electric motor and actuator applications requiring high power density and high efficiency. This electric motor design methodology is based on recent advances in materials, computer aided design, and control and a new appreciation for certain principles of electromotive physics. SEMA motor and controller technology is being developed by Kinetic Art & Technology Corporation and commercialized by Lynx Motion Technology Corporation.
Many applications may benefit from or require a motor drive with high power density and very low torque ripple. These include precision motion control, naval propulsion systems, and acoustically sensitive applications. However, conventionally designed motors often lack the required power density or possess magnetic characteristics that inherently produce low frequency torque oscillations.
The article An Introduction to SEMA Technology contains a technical overview of SEMA, an overview of current and potential applications and markets, and a summary of technical progress. If you would like more detailed information, please contact us.
The animation below depicts Lorentz force applied to a SEMA motor design.