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ABB to unveil 7MW PMG

SWITZERLAND: ABB is to launch a high-speed permanent magnet generator for capacity-rated offshore turbines of up to 7MW.

The new generator is based on the company's existing permanent-magnet generators
The new generator is based on the company's existing permanent-magnet generators
Similar to its lower power generators, the new turbine is based on a modular platform principle, featuring an adaptable turbine interface and a full converter.

ABB said its permanent-magnet and doubly-fed generators use the same high-speed drivetrain. This means upgrading to the full converter does not involve major re-engineering work for manufacturers that are already constructing doubly-fed turbines.

Raimo Sakki, ABB product manager for wind power generators, said: "We've standardised the basic structure across our whole high-speed permanent magnet range. This enables us to use cost-effective serial manufacturing and ensures short delivery times."

The manufacturer claims that the turbine will deliver efficiency of more than 98% at its rated speed and more than 97% at 20% load.

The new generator will be officially launched at the European Wind Energy Offshore Offshore event in Frankfurt on 19-21 November.

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