275results about How to "Reduce power generation efficiency" patented technology

A wind power generator system including: a windmill rotor including a blade having a variable pitch angle; a generator driven by the windmill rotor; and a control unit controlling the output power of the generator and the pitch angle of the blade in response to the rotational speed of the windmill rotor or the generator. The control unit performs a first control in which the output power is controlled in accordance with a predetermined power-rotational speed curve until the rotational speed is increased to reach a predetermined rated rotational speed, and performs a second control in which the output power is controlled to a predetermined rated power when the rotational speed exceeds the rated rotational speed; the control unit is responsive to the pitch angle for maintaining a state of performing the second control is or for switching to a state of performing the first control, when the rotational speed is reduced below the rated rotational speed after the control unit is once placed into the state of performing the second control. This provides a wind power generator system which suppresses output power fluctuation and generation efficiency reduction when a transient wind null occurs.

An electric power supply system capable of maintaining stable power generation or the like regardless of variation in the amount of fuel gas being supplied and variation in the gas calorie, comprises a gas engine, a gas turbine, a suction device configured to collect the generating gas, a gas separating device configured to classify the gas collected according to the calorie, a gas calorie adjusting device configured to mix gases having different calories which are supplied from the gas separating device to adjust gas calorie before supplying to the gas engine and the gas turbine, a gas amount balance monitor device configured to monitor balance between the amount of gas being consumed by the gas turbine and the gas engine in operation and the amount of gas being supplied from the gas calorie adjusting device, and a system control device configured to control operation of the gas engine, operation of the gas turbine, and operation of the gas calorie adjusting device.

A fuel cell system which includes: a fuel cell fed with a reaction gas for generating power; an output detection unit which detects output current and voltage of the fuel cell; a storage unit which stores a standard current-voltage characteristic of the fuel cell, from which a standard voltage of the fuel cell at an output current thereof is obtainable; and a gas feed mismatch detection unit which detects a gas feed mismatch of the reaction gas, based on a comparison between the detected output voltage of the fuel cell and the standard voltage at the detected output current, obtained from the standard current-voltage characteristic stored.

The invention discloses an environment-friendly solar panel placing device comprising a base. A bearing is fixedly embedded in the middle part of the upper surface of the base, a supporting column isarranged above the base, and the outer surface of the bottom end of the supporting column is fixedly connected with the inner ring of the bearing. A sliding groove is formed in the middle of the leftside face of the supporting column, a sliding block matched with the sliding groove is clamped in the sliding groove, and a first through hole is formed in the left side of the front surface of the supporting column. The environment-friendly solar panel placing device can enable the movable block together with the solar panel to adjust the inclination angle conveniently under the action of a sliding block, a first through hole, a second through hole, a connecting rod and a universal ball by arranging the sliding groove. Under the action of a screw rod and a screw ring, the supporting column can rotate along with the solar panel by arranging the bearing, so that the inclination angle of the solar panel can be conveniently adjusted. The device can be conveniently moved by arranging rollers,so that the solar panel can be effectively prevented from shielding the solar panel, and the power generation efficiency of the solar panel is reduced.