Examples of recent projects leading to volume production include:
- 500K+ RPM portable generator – generator set for portable energy generation (man packable) – Issues dealt with included small size of the rotor/stator unit, mechanical design of the rotor due to high speed, and matching converter to motor requirements (f1>8K Hz)
- Fuel Cell Air Supply Unit (compressor application), 12KW @ 120K RPM – challenging issues included power density, cooling and rotor circumferential speed.
- Gas & Oil Supply Industry (200kW@21krpm)
- Motor-Generator: (prototype for test purposes) – 100 KW @ 100K RPM. Issues to overcome were converter constraints; air friction; stiffness/press-fit of the rotor design; rotor circumferential speed > 400 meters/sec;
- Energy Generation & Storage: 350KW @ 28K RPM – issues included integration of generator and electrical contols; .
- Machine Tool Applications: 100KW @ 20K-40K RPM; 140 KW @ 18K-30K RPM
- Laser Light Application: (vacuum unit) 35 KW @ 70K RPM
- High Speed Blower: 70K RPM
- MicroTurbines: 35KW – 500KW at various speeds
- Compressors: 200 kW @ 21K RPM
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Applications for e+a rotors and stators are all over the map.
e+a began as a supplier of motors to manufacturers of
machine tool spindles so we have a large base of existing
designs from a few KW to around 150KW that we supply to
spindle makers; these range in volume from a few hundred to
a few thousand per year. Turbo-machinery applications using
PM motors are the fastest growing market space at e+a; these
applications include motors and generators for chillers, energy
generation and storage, compressors, micro-turbines, gas &
oil industry applications, high-speed blowers, vacuum pumps,
and replacement of gearboxes with direct-drive motors. e+a
has many existing designs for these applications but can
generate new designs when required. These units tend to
range from 35-850KW in power, and tens to hundreds per
year in volume. |