Control system and method for a wind turbine generator, such wind turbine being a variable speed turbine and having a doubly fed induction generator, said control system comprising means for determining the operating temperature of the different subsystems, having the means for dividing the generation of reactive power, both inductive and capacitive, between the stator (3) and the network side converter (6), based on the criterion of keeping every subsystem operating temperature as far away as possible from its corresponding limit, the method comprising the following steps: determine the electrical elements temperature; calculate the closeness of those temperatures to each element corresponding limit temperature; and distribute the reactive power production between the stator (3) and the network side converter (6), based on the criterion of keeping every subsystem operating temperature as far as possible from its corresponding limit.

A system to generate power, the system comprising a shaft configured for one-directional rotation around a horizontal axis, an inertial object coupled to the shaft where the inertial object has an uneven distribution of mass around the shaft, an electric generator configured to extract rotational kinetic energy from the shaft, and an electric motor configured to provide restorative energy to the shaft. The power generation method comprises steps of providing a power generation system, placing the shaft in an initial position, and inducing shaft rotation. Once shaft rotation is induced, the method alternates between steps of power generation and power consumption