초록 ▼

A method and apparatus for generating electricity from wind energy, wherein a wind wheel is connected to drive an energy converter which effects a torque reaction on the wind wheel proportional to the square of the rotational speed of the wheel, so that the wheel may be operated at fixed blade pitch

A method and apparatus for generating electricity from wind energy, wherein a wind wheel is connected to drive an energy converter which effects a torque reaction on the wind wheel proportional to the square of the rotational speed of the wheel, so that the wheel may be operated at fixed blade pitch and the blade tip speed will be proportional to the wind speed. The wind wheel may be connected to drive an electric generator to generate electrical energy in synchronism with mains supply.

대표청구항 ▼

A method for generating electricity from wind using hydraulic pump means, variable hydraulic motor means and a wind wheel with fixed pitch hydraulically connected to a generator which comprises: driving said generator by said wind wheel at a fixed rotational speed, operating said wind wheel at optim

A method for generating electricity from wind using hydraulic pump means, variable hydraulic motor means and a wind wheel with fixed pitch hydraulically connected to a generator which comprises: driving said generator by said wind wheel at a fixed rotational speed, operating said wind wheel at optimum tip speed by driving said hydraulic pump means connected therewith; controlling driving of said hydraulic pump means to effect a torque reaction on the wheel at least roughly proportional to the square of the rotational speed of the wind wheel; supplying variable hydraulic pressure by said pump means to said motor means for driving said generator; controlling operation of said motor means such as to maintain constant hydraulic pressure in the system while driving said generator at said fixed speed; and obtaining a frequency synchronous with mains frequency.