High Temperature Capabilities

Calnetix uses the latest in permanent magnet and insulation materials. Calnetix is continuously working with leading magnet and varnish manufacturers to increase the temperature capabilities and other characteristics in its PM machines.

• The use of high strength Neodymium-Iron-Boron permanent magnet material, with its lower per pound cost, is able to operate up to 300°F.
  
• High temperature Samarium-Cobalt permanent magnet material offers operation to 550°F.

For its high performance varnishes on the stator windings, Calnetix utilizes H and above class varnishes which pushes the rating temperatures well above 180°C. Most standard motors are limited to temperatures below 160°C.

These operating limits are consistently explored during integration of the system. Calnetix has developed in house analysis tools tohelp optimize the motor and the system.

One great example of a high temperature application that Calnetix currently produces, is a PM machine for gas turbine systems. The turbine impellers, which operate at around 900°C, are directly connected to the Calnetix high speed alternator rotor shafts. Being able to analyze these types of critical systems and produce PM machines which operate efficiently and reliably, is a skill that Calnetix has mastered.