Calnetix Technologies designs, develops and manufactures a wide range of high-speed permanent magnet (PM) motor generators for a variety of applications and industries. Our high-speed motors and high-speed generators are designed based on a flexible modular structure, developed using technologically advanced engineering methods.
We develop custom series motors and generators for OEMs that make their products more innovative and competitive. High-speed motors are getting widely used in many industrial, defense and aerospace applications. Calnetix’s permanent magnet motors are the preferred choice for large compressor, blower and vertical pump applications. We are also a key supplier of subminiature PM motors used in artificial hearts and other blood pumps. Calnetix’s permanent magnet generators are used in auxiliary power units (APUs) for today’s advanced fighter aircrafts to self-contained industrial power generation systems rated at 500 kW or more.
Due to higher rotational speeds and the use of magnetic bearings, Calnetix’s high-speed motors and high-speed generators offer smaller footprints, lighter weight, higher efficiency, higher reliability and lower maintenance than traditional gear box machines. Our electric motors and electric generators range from only a few watts to megawatt power levels with speeds ranging from 4,000 rpm to 450,000 rpm. Calnetix's high-speed motor generators provide the following advantages:
Calnetix’s high-speed motors and generators have been widely used in industrial and defense and aerospace applications due to their high performance and high efficiency. Calnetix’s permanent magnet motor has proven to be highly desirable, not just for efficiency reasons, but also for reliability, elimination of maintenance costs and ease of implementation. The two standard Calnetix high-speed motor generators are shown and described below.
Less than 1 MW
Applications such as chiller systems, compressors, blowers, generators for turboexpanders, blood pumps, electrically assisted turbochargers, UXVs, satellites, test stands, food spray dryers and precision lasers
The continuous desire for increased high-power density, oil-free operations, high efficiency and zero emissions are leading to a growing demand for high-speed permanent magnet motors and generators. A high-speed motor or generator combined with active magnetic bearings is a 360-degree solution for increasing energy efficiency, reliability and compactness. Some of the advantages of switching to permanent magnet motors, include:
Zero excitation power
Efficiency of 95% or higher
Large air gap
High resistivity and very low permeability of the rotor
Reduced inverter size and losses
And many more…
To see more information about permanent magnet machine advantages, click here.
How PM Motor Generators Work
Advantages of PM Machines for High-Speed Applications
Control of a 750kW Permanent Magnet Synchronous Motor
Demonstrated Operability and Reliability Improvements for a Prototype High-Speed Rotary-Disc Atomizer Supported on Active Magnetic Bearings
Losses in High Speed Permanent Magnet Machines Used in Microturbine Applications