Wind turbine generation system with simple rectifier using MERS in current link topology wind farm

Multipole (gearless) PMSG is one of the most promissing wind turbine generation system for multi-megawatt range, because of its high efficiency and low maintenance advantage. In this digest, the current link topology based wind turbine generation system with simple diode rectifier using MERS (Magnetic Energy Recovery Switch) is proposed. Although diode rectifier is more simple, more robust and inexpensive than active rectifier, the diode rectifier alone is incapable to control the reacvtive power. Thus in this digest the wind energy conversion system with the diode rectifier using MERS is proposed. MERS here functions as a variable capacitor and enables the torque of the generator to be controllable, so that maximum power tracking operation corresponding wind speed change is realized by MERS control. This proposed system possesses several prominent advantages which are presented below.