39results about How to "Improve power output capability" patented technology

A windmill apparatus includes tower, a tower-mounted hydraulic pump driven by windmill blades, and hydraulic lines connected to a ground storage tank and to a number of separate generator units. Each generator unit includes a hydraulic pump and an electrical generator. In operation, upon startup, as the wind propels the propeller-driven pump the hydraulic fluid circulates freely until a pre-set pressure is achieved, upon which a diverter valve diverts all the fluid pressure to the first generator unit. When the first generator unit is powered sufficiently to achieve a stable output voltage, a subsequent one of the remaining generator units is powered up until its output voltage is stabilized, with this process continuing as long as there is a surplus of hydraulic power available to power up additional units to take full advantage of all of the available wind power.

A fuel cell power plant includes a fuel cell having a membrane electrode assembly (MEA), disposed between an anode support plate and a cathode support plate, the anode and / or cathode support plates include a hydrophilic substrate layer having a predetermined pore size. The pressure of the reactant gas streams is greater than the pressure of the coolant stream, such that a greater percentage of the pores within the hydrophilic substrate layer contain reactant gas rather than water. Any water that forms on the cathode side of the MEA will migrate through the cathode support plate and away from the MEA. Controlling the pressure also ensures that the coolant water will continually migrate from the coolant stream toward the anode side of the MEA, thereby preventing the membrane from becoming dry. Proper pore size and a pressure differential between coolant and reactants improves the electrical efficiency of the fuel cell.

The present invention relates to a method for preparing a microbial fuel cell, wherein the method includes: (i) inoculating an anodic liquid medium in contact with an anode of the microbial fuel cell with one or more types of microorganisms capable of functioning by an exoelectrogenic mechanism; (ii) establishing a biofilm of the microorganisms on and / or within the anode along with a substantial absence of planktonic forms of the microorganisms by substantial removal of the planktonic microorganisms during forced flow and recirculation conditions of the anodic liquid medium; and (iii) subjecting the microorganisms of the biofilm to a growth stage by incorporating one or more carbon-containing nutritive compounds in the anodic liquid medium during biofilm formation or after biofilm formation on the anode has been established.

A fuel cell includes a pair of separators and a plurality of electrolyte electrode assemblies between the separators. The electrolyte electrode assemblies has a small circular disk shape. Eight electrolyte electrode assemblies are arranged along an inner circle and eight electrolyte electrode assemblies are arranged along an outer circle concentric with a circular hole. Each of the separators includes a plurality of plates stacked together. A fuel gas channel for supplying a fuel gas to anodes of the electrolyte electrode assemblies, an oxygen-containing gas channel for supplying an oxygen-containing gas to cathodes of the electrolyte electrode assemblies are formed between the plates.

The invention relates to the technical field of automobile batteries, in particular to a power battery low temperature protection system and a protection method thereof, wherein the system includes a temperature monitoring circuit, a control module and a heating module, and the temperature monitoring circuit is used to monitor the ambient temperature of the power battery When it is lower than the first threshold, it is turned on and sends a wake-up signal to the control module; the control module is used to send a heating instruction to the heating module when receiving the wake-up signal; the heating module is used to heat the power battery according to the heating instruction sent by the control module. Through the system and method of this application, the battery temperature can be automatically monitored, and the heating module can heat the power battery from time to time, so that the battery temperature is always in a suitable working range in a low temperature environment, and can be directly charged and discharged, shortening the battery life. At the same time, when the user needs to use the car, the power battery can be discharged directly, which improves the power output capacity of the battery.

Systems and methods for operating an electric energy storage system are described. The systems and methods include ways of coupling electric energy storage cell stacks to an electric conductor or bus. The coupling is performed to reduce current flow through contactors and to increase a life span of the contactors.

Provided is a switch reluctance generator converter system. The system is composed of twelve diodes, seven switch tubes, two capacitors and three phase windings and is not provided with a special excitation source, two branches of each phase winding are in parallel connection during excitation and play a role of strengthening the excitation effect, while the excitation is carried out, electric power output can be achieved when the condition of the voltage of a first capacitor voltage higher than that of an output end is met, while electric energy is output in the power generation stage, the first capacitor providing the excitation electric energy is charged reversely; the whole system has the advantages that the extendibility and flexibility are strong, the loss is low, the quality of theelectric energy is high, and various small and medium power single-generator set systems are made to adapt to the load needing direct current power supply or the demand of direct current micro-grids.

The invention relates to a high-speed direct current switch reluctance generator converter system. The system comprises four-phase windings, six switch tubes, seven diodes, five capacitors, an inductor and an isolation converter. Converter loops of the first phase winding and the second phase winding have simple structures and the same control modes, and a third phase winding and a fourth phase winding are asymmetrically integrated conversion structures. By depending on the relatively complex converter loops and the regulation and control of the fourth phase winding, the measure of enhancementof the power generation capacity of the fourth phase winding itself can be achieve such as a follow current stage, and the fourth phase winding can be mutually promoted with the third phase winding to indirectly improve the power generation capacity of the first phase winding and the second phase winding; and besides, the structure is high in expandability, the output end is connected in series to increase the voltage, the total excitation source of each phase winding is regulated according to the duty ratio of a sixth switch tube so that the high-speed direct current switch reluctance generator converter system is a set of high-performance conversion system, is especially suitable for the high-speed direct current switch reluctance generator application field, and can be taken as one ofthe generator in the internal direct current microgrid in a full-electric aircraft.

Disclosed is a high-voltage current conversion system of a switch reluctance wind power generator. A switch reluctance generator is used as a main wind power generator, and the output electric energyof a permanent magnet direct current generator coaxially connected with the switch reluctance generator is used as exciting electric energy of the switch reluctance generator; each phase of winding ofthe switch reluctance generator comprises two branches which are connected in parallel in excitation while in series in power generation, thereby strengthening the excitation effect; in power generation, the direct current power supply needed by excitation and a charged capacitor in excitation are both connected with the corresponding phase winding to be participated in power generation output, thereby highly improving the output voltage; and the whole current conversion system is high in expandability, high in reliability, simple in structure, easy to control, low in loss and suitable for medium-low-power wind power and medium-high-voltage direct current grid connection or direct current load power utilization fields.

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).

The invention discloses a stretchable arched array friction nanometer power generation fabric and a preparation method thereof, which comprises a transverse arched array fiber strip A and a longitudinal fiber strip B, and is realized by using a traditional horizontal and vertical weaving method. The horizontal arched array fiber strip A includes a first conductive layer, a support layer and a second conductive layer; the longitudinal fiber strip B includes a first polymer, a stretchable conductive layer and a second polymer layer; wherein the Both the first polymer layer and the second polymer layer are polymer layers with microstructures on the surface. The stretchable arched array friction nano-power generation fabric of the present invention has both stretchability and high power output, and can be conformally assembled with the human body to realize the conversion of human body movement mechanical energy into electric energy, which is a wearable commercial electronic product Provide electrical energy.