GE claims DC system boosts offshore output by 15%

UNITED STATES: GE has revealed a system designed to allow remote power networks to use direct current (DC), claiming that it could boost offshore wind farm output by 15%.

Power from wind turbines is transformed to high-voltage direct current for transmission

GE was however, cagey about the details of its system, dubbed Passiveboost, only saying that it has "used a new power device packaging technique with a novel cooling system".

Rather than being based on wholly new technology, the system brings together innovations that GE has been introducing over the last four years.

The system is intended as a replacement for the AC transformer that most turbines currently feature. GE's technology allows direct connection to a high-voltage, DC power collection grid.

The company claims that this will reduce cable cost and do away with the need for an expensive and complex DC breaker.

Trials performed at GE's full-scale power system test site near Leicester, England, have shown the technology cutting energy losses, thus boosting output by up to 15%.