2,5 MW inverter for wind turbines

28 April 2010 Power Electronics / Power Management

Power-One has developed a 2,5 MW inverter for use in large off-shore and on-shore wind turbines. It has already delivered the unit to a leading US wind turbine manufacturing company and also expects it to be deployed in an offshore European multigigawatt (GW) wind farm under development.

The inverter’s design currently supports towers with a capacity of 5–6 MW, as well as for future designs with capacities over 10 MW. It incorporates liquid cooling technology and medium voltage, designed to reduce customers’ footprint and cabling costs. The units are currently available for production and are compatible with a wide range of wind turbines. The 2,5 MW inverter incorporates IGBT-based design and delivers power to the grid from permanent magnet generators.

The inverter operates at 5500 V d.c. and offers efficiency of 98,5% at full load. Its modular design permits flexibility in sizing multiple inverters for wind power generators in excess of 10 MW. Low output voltage harmonics distortion (THD<3%) means that better power quality is delivered to the utility grid.

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