A multi-sage controlled frequency generator is described that has a low size, weight and cost. The new generator requires an electronic controller that requires only 25% of the total generated power (100%) when the generator shaft speed varies by +/-25% ar...

A variable speed wind turbine employing a rotor (103) connected to a multiplicity of synchronous generators (106 - 112) with wound field or permanent magnet rotors. A passive rectifier (114 - 120) and an inverter (136 - 142) are used for power transfer bac...

A wind turbine (1) for producing electrical power is described. A turbine rotor (4) with at least one blade (5) and a generator (10) with a rotor and a stator are provided. The turbine rotor (4) is mechanically coupled with the rotor of the generator (10)....