40results about How to "Effective power output" patented technology

A method for operating a wind turbine which includes a rotor hub supporting a rotor blade includes: a) detecting changes in the aerodynamic performance of the rotor blade; b) determining a first control rule; c) determining a first power output information indicating a first power output based on the first control rule; d) changing an operational parameter and choosing a second control rule such that the first control rule is replaced by the second control rule; e) determining a second power output information indicating a second power output based on the second control rule. c) comparing the first and second power output information. If the second power output exceeds the first power output, repeating a)-f) with the second control rule being used as the first control rule in b); otherwise repeating a)-f) a different second control rule is applied in d).

A fuel reformer which can easily achieve high weight energy density and high volume energy density, and a method for producing the fuel reformer with ease and high efficiency as well as an electrode for electrochemical device, such as a fuel cell, and an electrochemical device are provided. The present invention is to feed hydrogen obtained from a fuel reformer having a catalyst layer containing Pt for taking out hydrogen from a liquid fuel, such as methanol, and a hydrogen permeable layer, such as a Pd thin film, which is impermeable to liquid and permeable to hydrogen to an electrochemical device such as a fuel cell, which comprises a negative electrode, a positive electrode and a proton conductive film sandwiched therebetween. The present invention provides a method of producing the hydrogen permeable layer in the reformer by forming the hydrogen permeable layer and the catalyst layer on a base layer comprising Al or the like, and removing the base layer by dissolution.

A laser device includes a light source that emits a source light having a first peak wavelength. A nonlinear optical component performs a frequency conversion process that converts the source light into output light having a second peak wavelength. A stabilization component minimizes a mismatch error constituting a difference between the first peak wavelength and a wavelength for which the frequency conversion process in the nonlinear optical component has a maximum value. The stabilization component may include a housing that is thermally conductive between the light source and the nonlinear optical component to minimize a temperature difference between the light source and the nonlinear optical component. The laser device may include a focusing optical component that focuses the source light to have a convergence half angle that is larger than a convergence half angle that gives maximum output power, thereby increasing an acceptable range of the mismatch error.

The invention discloses a high-efficiency control system and a control method of a brushless motor with a wide working area, which are used in energy systems of aerospace vehicles. The system of the present invention includes a power supply module, a first DC-DC circuit, a battery pack, a second DC-DC circuit, an anti-reverse circuit, ESC, BLDC, an airborne controller, and a communication link. The electric energy from the power supply module charges the battery pack through the first DC-DC circuit, the electric energy of the battery pack passes through the second DC-DC circuit in turn, and the anti-reverse circuit supplies power to the ESC, wherein the output voltage of the second DC-DC circuit, the ESC The throttle signal input is controlled in real time by the on-board controller according to the power demand of the aircraft; the high-efficiency control system of the brushless motor with a wide working range of the present invention is suitable for the control of brushless motors with a large power demand range such as long-endurance drones. The system can realize the efficient power output of the whole power system in a wide working area.

The invention relates to a liquid air engine. In the engine, an upper support (5) and a lower support (20) are fixed supports of the liquid air engine, a central shaft (18) is fixed from the upper end and the lower end, and the central shaft (18) is fixed and cannot be rotated in working; an upper bracket (3) is arranged on the central shaft (18) through an upper support bearing (6), and a lower bracket (15) is fixed on a main driving wheel (22); the main driving wheel (22) is arranged on the central shaft through a main driving wheel bearing (19); a bracket fixing short screw (24) and a bracket fixing long screw (14) are connected with the lower bracket (15), a middle support plate (12) and the upper bracket (3) to form a rotatable integral bracket; a cam (8), an external gas joint (4), a gas movable joint (7), a one-way overrunning coupler (8), a movable electric contact (17) and a liquid gas movable joint (21) are arranged on the central shaft (18); a rocker (9) and the one-way overrunning coupler (8) are in key connection to make clockwise one-way rotation; cylinder rodless end covers (in figure 4: 40) of a high-pressure cylinder group (10) and a low-pressure cylinder group (11) are fixed on the bracket fixing long screw (14), can make small swing around the bracket fixing long screw (14); the top of the cylinder piston rod is movably connected with the top of the rocker (9); the middle support plate is provided with a liquid nitrogen pump (1); and a high pressure vessel (16) and a low pressure vessel (23) are fixedly arranged on the lower bracket (15).