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New Energy Award 2000
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New Energy Equipment / System Category
High Efficiency Power Generator for Small-scale Wind Power Generation
System (Uni-Ace Pole 500)
Winner
Kinsei Giken Co., Ltd. |
Comparing to a conventional generator, starting torque (the
initial force to rotate the generator) of the Uni-Ace Pole 500
is 1/6.
When it is used as a wind power generator, it starts operation
at a wind speed of 2.5 m/sec, and it continues to operate at
1.7 m/sec.
This new and small type generator increases the power generation
efficiency by 40% compared to the conventional generator.
Features of Equipment, Systems and Facilities
Uni-Ace Pole Generator
The structure of power generator has not changed for 100
years. This generator has quite a new structure with permanent
magnets. This is the world's first small-scale power generator
with AC square-wave output.
- Starting torque is 1/6 of the conventional generator.
- Unchanged rate of waveform in low or high rotational
speed can provide consistent high quality power output.
- 90% of power generation efficiency at 2 Hz per rotation.
(Concerning conventional generators, efficiency is about
65%.)
- Vibration and power generation loss is small and temperature
increase is slight.
- Simple structure with 40 parts (1/5 of the conventional
generator)
Advantages as a wind power generator
Although this is a magnetic type, starting torque is lower
than that of the conventional generator. This is highly
efficient and most optimum generator for wind power system.
- Use of permanent magnets is optimum for stand alone
type wind power generation system in the non-electrified
district.
- It is optimum for wind power generation in a weak
wind region.
- It starts operation at a wind speed of 2.5 m/sec,
then generates power at 1.7 m/sec.
- Simple structure will reduce troubles. It is almost
maintenance-free.
- Four 500 W generators have been installed at a brewary
plant located in a weak wind region.
Outlook
- Logically, this generator can generate up to 50 kW.
Actually at present, it generates in the range from
1 W to 5 kW. It achieved down sizing and higher efficiency.
- When the generation is utilized in various fields,
this simple structure with small number of parts will
lead to substantial price reductions by mass production.
Comparison of wind power generation characteristics
*Propellers have three blades with a diameter of 1.8 m
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Developed generator Measured value
Developed generator (4 units)
Average value
General purpose generator
Performance value |
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Installation at Takasago
Plant of Suntory, Ltd. |
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