Taming the induction generator
The Induction Generator Controller (IGC) enables ordinary
industrial motors to be used as stand-alone generators on small hydro power
schemes up to 10kW. The IGC maintains a near constant generator output voltage,
irrespective of the load connected, by dissipating any surplus power in a
'ballast' heater. For example, if the generator produces 6kW and the total
load connected by the user(s) is 4kW then the IGC controls the switching on
and off of the ballast so as to dissipate the surplus 2kW.
The IGC is a robust, low cost, fully electronic, modular unit.
It has been proven in Bolivia, Indonesia, Ireland, Nepal, Peru, Sri Lanka, Sudan,
United Kingdom and Zaire. The IGC tames the induction generator to enable
hydro resources to be developed for sustainable electricity production.
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Key features of the IGC include:
- High reliability.
- Low cost modular construction.
- Excellent voltage control.
- Frequency regulation (dependant on load power factor).
- Integral overvoltage and ballast short-circuit protection.
- User load short-circuit proof.
- Transferable technology to developing countries.
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