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Symetron™
P-2 AC Motor Technology
AC
Induction Motor Design for “Pancake”
or “Hub” Market Applications
- Promising AC Induction
Pancake New Design
- High Torque Low Cost
- Ideal for Integrated Hybrid
Market Applications
|
PM
performance without PM
material
(1.01
ft-lbs/lb) |
Overview
Many applications require flat
or hub style motors. Symetron™
AC induction motor technology applied to a
“pancake” motor can produce
the torque of a PM motor without
using permanent magnet material. Early test results
show powerful potential.
Other benefits include reduced
manufacturing costs, and
operation at higher temperatures
and higher RPM.
Next Generation Hybrid Motor
As hybrid vehicles become
“electric motor dominant” they
require a motor that can deliver
more power and more torque at a
lower cost with more
reliability. Raser’s
Symetron™ technology is
available for license for “hub”
style motors to meet the needs
of the next generation of hybrid
vehicle motors. Symetron™
technology offers PM motor
performance with the economy of
an AC induction pancake motor.
The technology is ideal for many
applications including
integrated hybrid motors,
intergraded starter generators,
and is scaleable for a wide
range of sizes from small
scooters to the large heavy vehicles
and generators.
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Performance* (At
3000 RPM) |
Metric
|
|
Continuous Torque |
150 ft-lbs
|
|
Peak Torque |
300 ft-lbs
|
|
Peak Efficiency |
93% |
|
Full Load Efficiency |
89% |
|
Weight |
67 kg |
|
Power |
64 kW or 86 hp |
* Based on performance predictions from preliminary testing. Verification
testing by a second independent lab in progress (as of Sept. 2004).
|
| |
Independent testing at Revolutionary Engineering in
Detroit measured actual torque of a Symetron™ motor and controller
working together as a drive system and averaged 420 ft-lbs of torque
for a 60 second duration. |
Benefits of
Symetron™ AC Pancake Technology
- PM Motor Performance from an
Economical AC induction Motor
- Does Not Require PM Material
- High Torque at Low Speed
- Can Operate Efficiently at
High RPM
- Lower Cost than PM
Technology
- Scaleable to Very Large
Large Motor Size
- More Robust—Rugged, Durable,
Reliable
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