AUTOMATIC WINDMILL ELECTRIC GENERATING PLANT Russian patent published in 1999 - IPC

FIELD: off-line power supplies for remote and difficult-to-get-at locations and cost-effective power supplies for some users. SUBSTANCE: plant that has windmill and excitation system of electrical machine mounted on common rotor with machine incorporating n-phase stator winding connected through rectifier and first switch to inverter and energy storage, controller, and second switch is provided, in addition, with adjustable inverter, inversion circuit, wind direction and speed sensors, as well as position sensor connected to common rotor. Outputs of sensors are connected to controller inputs. First output of controller is connected to control input of first switch directly and to that of second switch, through inversion circuit. Second output of controller is connected to first input of adjustable inverter whose second input is connected to output of energy storage and output, to m-phases of n-phase armature winding through second switch. In this way, optimal characteristics (amount of electrical energy generated within useful speed range of wind, uniformity of energy distribution, minimum of windmill resistance to air flow in case of storm wind) are optimized, no-load running is eliminated, mobile and energy-saving starting of plant is ensured. EFFECT: improved efficiency of plant. 1 dwg