1304results about How to "Increase power generation capacity" patented technology

There is provided a thermoelectric device capable of improving a power generation performance while keeping a hermetic sealing after a heat cycle is applied, and also achieving simplification of a structure and improvement in productivity and reliability of a device by reducing the number of articles, and a method of manufacturing the same.

A thermoelectric device, includes a metal substrate 2, a thermoelectric element 3 mounted on a center portion of a surface of the metal substrate 2, a metal lid 4 for covering an upper surface and side surfaces of the thermoelectric element 3, and a joining metal member 5 provided to a peripheral portion of a surface of the metal substrate 2 to hermetically seal a space between the metal substrate 2 and the lid 4.

To provide a membrane/electrode assembly for polymer electrolyte fuel cells, which is capable of providing high power generation performance even under a low humidity condition and has sufficient mechanical strength and dimensional stability, and which has an excellent durability even in an environment where moistening and drying are repeated, and a polymer electrolyte fuel cell which is capable of providing high power generation performance even under a low humidity condition.

A membrane/electrode assembly 10 is used, which comprises a cathode 20 having a catalyst layer 22, an anode 30 having a catalyst layer 32, and a polymer electrolyte membrane 40 interposed between the catalyst layer 22 of the cathode 20 and the catalyst layer 32 of the anode 30, wherein at least one of the cathode 20 and the anode 30 further has a reinforcing layer 26 comprising a porous sheet-form reinforcing material made of a polymer, and an electrically conductive fiber.

An electrolyte is single crystal composed of La_9.33Si₆O₂₆ in which the crystal is oriented in the c-axis, and the c-axis is in the thickness direction of the electrolyte. In the electrolyte, the oxide ion is preferentially migrated in the thickness direction. That is, the oxide ion conduction exhibits anisotropy. Isotropic conductive layers composed of YDC, in which the oxide ion conduction exhibits isotropy and the oxide ion conductivity is lower than that of the electrolyte, are provided between the electrolyte and an anode and a cathode.

Disclosed is a method for removing a solvent (41) in an electrolyte membrane (24) as a constituent of a membrane-electrode assembly (12) used in a fuel cell. The membrane-electrode assembly is arranged in a water vapor, and the water vapor is introduced into the electrolyte membrane by being transmitted through diffusion layers (21, 27) respectively on positive/negative electrode sides. The solvent in the electrolyte membrane is removed by the thus-introduced water vapor. This removal of the solvent is performed at temperatures which are not higher than the decomposition temperature of the hydrocarbon solid polymer.

The invention discloses a virtual synchronous generator-based photovoltaic power control strategy, which comprises a photovoltaic power generation system, an energy storage device and an inversion device, wherein a power supply output end of the photovoltaic power generation system is respectively connected with an energy storage end of the energy storage device and an inversion end of the inversion device; the output end of the inversion device is connected with a power grid; the inversion device carries out a power control through a virtual synchronous generator method; the output power of the inversion device is adjusted through the virtual synchronous generator method to reach a stable state; the output power is adjusted according to load fluctuation; stable frequency and voltage of the photovoltaic system can be maintained; and the grid-connected generation performance of a photovoltaic power station is effectively improved.

The piezoelectric generator is characterized by providing a spacer member in the vicinity of a fixed end of an elastic plate mounted on a base plate by means of affixing both ends in such a way as to prevent the elastic plate not to be deformed unnecessarily when a load is applied to the elastic plate from above, so that a piezoelectric ceramic plate glued onto the elastic plate generates electric power by the elastic plate's deformation.

The invention discloses a fault tolerance permanent magnet power generation system and a control method thereof. The fault tolerance permanent magnet power generation system comprises a winding open-circuited type permanent magnetic generator, a three-phase bridge-type converter, a three-phase rectifying bridge, parallel DC buses, a filtering capacitor, a driving circuit, a controller and a detection circuit, wherein two sides of the generator are respectively connected with the three-phase bridge-type converter and the three-phase rectifying bridge; the parallel DC buses are connected between the converter and the DC side of the rectifying bridge, and the filtering capacitor and a load are respectively connected in parallel between the parallel DC buses; the detection circuit comprises a position sensor, a current sensor and a voltage sensor, and related signals measured by all the sensors are transmitted into the controller; and output signals of the controller are connected with the driving circuit, and the driving circuit drives various switch devices in the three-phase bridge-type converter to be switched on and off according to the related control signals. The fault tolerance permanent magnet power generation system is capable of expanding the application field of permanent magnet motors. The invention further discloses the control method of the fault tolerance permanent magnet power generation system.

The invention relates to a power generation device following up a spindle of a propeller and belongs to the field of propeller monitoring and piezoelectric generation. First fixed magnets and a bearing are embedded on a bearing seat, the spindle of the propeller is mounted on the bearing seat through the bearing, a first limit ring, a piezoelectric transducer and a second limit ring are sequentially mounted on a spline of the spindle, a magnet frame is fixed on the side wall of the bearing seat, second fixed magnets are embedded on the inner side of the bottom end of the magnet frame, magnetic poles of each two adjacent second fixed magnets are opposite in direction, and the first fixed magnets and the second fixed magnets are the same in number and are mounted with like poles opposite. The power generation device following up the spindle of the propeller has the advantages that the piezoelectric transducer in rotation is forced to be in bending deformation axially by the aid of the convex curved surfaces of the limit rings and under the action of magnetic force coupling, deformation and power generation are unaffected by the rotation state, and power generation can be achieved when the spindle rotates at a uniform speed and at a high speed; and all point stress is equal when the piezoelectric transducer is in bending deformation.

The invention relates to a shaft-end overhung piezoelectric cantilever beam electric generator, and belongs to the technical field of new energy resources and power generation. A left end cover and a right end cover are respectively installed at two ends of a shell body through screws. A semi-annular balancing weight is installed on the lower side of the interior of the shell body through a screw. The upper portion of the left end cover and the upper portion of the right end cover are respectively provided with a lightening hole. A magnet I and a bearing are embedded in the inner side of the bottom wall of the left end cover. A magnet I and a bearing are embedded in the inner side of bottom wall of the right end cover. A piezoelectric vibrator is arranged between the left end cover and the shell body in a compression joint mode. A piezoelectric vibrator is arranged between the right end cover and the shell body in a compression joint mode. A magnet II and a frequency-modulation mass block are installed at the free end of each piezoelectric vibrator. A rotating shaft of a rotor is installed on the left end cover and the right end cover through bearings. A connecting disc is installed at one end of the rotating shaft through a nut. A magnet III is embedded in a rotating disc of the rotor. The shaft-end overhung piezoelectric cantilever beam electric generator has the advantages that the piezoelectric vibrators are motivated for electric generation and external fixing and supporting are not needed; the shaft-end overhung piezoelectric cantilever beam electric generator is an integrated type individual component, so that the structure of a rotating body does not need to be changed, and the shaft-end overhung piezoelectric cantilever beam electric generator is convenient to install and maintain; the shaft-end overhung piezoelectric cantilever beam electric generator is high in reliability, strong in power generation capacity, and wide in velocity zone.

A piezoelectric ultracapacitor is disclosed capable of converting the kinetic energy of ordinary motion into an electrical potential. Multiple piezoelectric ultracapacitors may be configured together to provide an increased output voltage and various materials may advantageously be used. The piezoelectric ultracapacitor of the present invention may be used in various contexts, including power generation, switching and control and memory. An elastomeric piezoelectric ultracapacitor, along with methods of making and operating such a device, is also disclosed. The elastomeric piezoelectric ultracapacitor utilizes the voltage generation capabilities of a piezoelectric ultracapacitor and the generator mode operation of an elastomer actuator, combined and cooperating in novel ways, to provide improved energy generation capabilities.

A membrane electrode assembly for a solid polymer electrolyte fuel cell includes an anode electrode, a cathode electrode, and a polymer electrolyte membrane sandwiched by the electrodes, the catalyst layer of the cathode electrode containing a catalyst supporting particle in which a precious metal is supported on heat-treated carbon black or activated carbon, an ion conductive material, and a crystalline carbon fiber. Heat treatment is preferably applied at 2,500 to 3,000° C. (degrees Celsius). The membrane electrode assembly provides superior power generation performance.

To provide a membrane/electrode assembly for a polymer electrolyte fuel cell which has a high power generation performance in an environment ranging from a low humidity to a high humidity and is scarcely susceptible to deterioration in the performance of the electrode even when fuel becomes deficient.

A membrane/electrode assembly 10 for a polymer electrolyte fuel cell, which comprises an anode 15 having an anode catalyst layer 11 containing an anode catalyst and an ion-exchange resin, a cathode 16 having a cathode catalyst layer 13 containing a cathode catalyst and an ion-exchange resin, and a polymer electrolyte membrane 17 disposed between the anode 15 and the cathode 16, wherein the anode catalyst is one having platinum or a platinum alloy supported on a carbon, and the amount of platinum or a platinum alloy supported in the anode catalyst is from 1 to 25 mass %; and the anode catalyst layer 11 contains fine particles made of at least one member selected from iridium oxide, iridium, ruthenium oxide and ruthenium, and the fine particles have a specific surface area of from 2 to 50 m²/g.

The invention discloses a method for collecting electric energy by utilizing low-speed airflow flow-induced vibration. According to the method, low-speed airflows are subjected to rectification and acceleration through a wind flow collecting passage, a flow surrounding vibration blunt body generates vortex shedding, the vibration blunt body is excited to vibrate, fluid flowing energy is converted into the vibration mechanical energy of the vibration blunt body, and an electro-magnetic induction generator is utilized for converting the vibration mechanical energy of the vibration blunt body into electric energy; and in the vortex forming process, the downstream moving is caused, a flexible piezoelectric vibration sheet is further excited to generate deformation and swings along with the vortex flowing, the vibration blunt body drives the flexible piezoelectric vibration sheet to move, and the fluid flowing energy is directly converted into the electric energy. The method for collecting the electric energy by utilizing low-speed airflow flow-induced vibration is simple, the required starting wind speed is low, the energy conversion efficiency is high, two modes including electro-magnetic induction and piezoelectric effect are adopted, and the electric generation capability is greatly improved.

A fuel cell stack includes power generation cells, terminal plates, first cooling cells, and second cooling cells. The terminal plates are electrically connected to the power generation cells. The first cooling cells are interposed between the terminal plates, and a cooling liquid is supplied to the first cooling cells for cooling the power generation cells. The second cooling cells are interposed between the terminal plates. A predetermined number of power generation cells are interposed between the first cooling cell and the second cooling cell. A cooling air is supplied to the second cooling cell for cooing the power generation cells.

The invention provides a vertical shaft tidal current generating set. The vertical shaft tidal current generating set comprises three modules, namely an upper layer platform part, a supporting frame part and an impeller part, wherein the upper layer platform part mainly comprises a generator, a gear box, a horizontal connecting shaft, a supporting platform, a supporting column and a vertical connecting shaft; the supporting frame part is formed by connecting an upper frame plate, a lower frame plate, a left frame plate and a right frame plate; and the impeller part comprises a main shaft, a spoke sleeve, a spoke, a spoke shaft, a blade, a blade shaft, a wheel disk and an adaptive attack angle control device. The invention provides the high-performance vertical shaft tidal current generating set, which has high starting and generating performances and high structural strength, can be developed towards large-scale direction, can be used below a floating platform and above a pile base and a tension leg, is convenient to produce, manufacture, install and debug, and is suitable for engineering application.

The invention belongs to the field of fuel cells, and particularly relates to a generating and energy storage integrated device based on direct carbon fuel cells (DCFCs) with a liquid metal positive electrode. The generating and energy storage integrated device comprises a metal molten pool, the liquid metal positive electrode, the tubular solid oxide direct carbon fuel cells (SO-DCFCs) and a fluidization air distributing feeding system, wherein the tubular SO-DCFCs can be blind pipes and through pipes and can be inserted into the metal molten pool vertically or horizontally; the feeding system carries a fuel and a positive electrode material into the metal molten pool by virtue of carrier gas, and substances in the molten pool are stirred. The generating and energy storage integrated device provided by the invention has the advantages that chemical energy in the fuel and surplus electric energy in an power grid are changed into chemical energy in the liquid metal positive electrode to be stored, and the integration of a generating device and an energy storage device is realized; the integrated device is simple and compact, the reactivity of the carbon fuel and the metal positive electrode is high, the property of the cell is good, the friction of the cell caused by liquid state positive electrode fluidization is small, the service life of the cell is long, the seal is easy, the collection is convenient, and a large-scale electric pile is convenient to form.

To provide a process for forming a catalyst layer whereby defects such as cracks are scarcely formed in the catalyst layer, and the bond strength is high at the interface between the catalyst layer and a reinforcing layer and at the interface between the catalyst layer and a polymer electrolyte membrane; and a process for producing a membrane/electrode assembly for a polymer electrolyte fuel cell, which is capable of exhibiting high power generation performance even under a low humidity condition and has sufficient mechanical strength and dimensional stability and which has excellent durability even in an environment where humidification and drying, etc. are repeated.

In the production of a membrane/electrode assembly 10, a first catalyst layer 22 (a second catalyst layer 34) is formed by a process comprising steps (a) and (b). (a) A step of applying a coating fluid comprising a catalyst and an ion-exchange resin, on a substrate to form a coating fluid layer. (b) A step of disposing a reinforcing layer 24 (34) on the coating fluid layer formed in the step (a) and then, drying the coating fluid layer to form a first catalyst layer 22 (a second catalyst layer 34).

A multi-stage folding portable solar charging apparatus includes first, second and third photoelectric conversion modules. The second photoelectric conversion module is pivotally connected to a side of the first photoelectric conversion module and folded/unfolded with respect to an upper surface of the first photoelectric conversion module, and the third photoelectric conversion module is pivotally connected to another side of the first photoelectric conversion module and can be folded/unfolded with respect to a lower surface of the first photoelectric conversion module, such that the photoelectric conversion modules are electrically connected with each other. A connector is fixed and electrically connected to one of the photoelectric conversion modules. The second and third photoelectric conversion modules are unfolded from the stacked first photoelectric conversion module to increase an electric power generation area of charging apparatus when unfolded to enhance the electric power generation, and reduce the volume of the charging apparatus when folded.

In order to enhance the tracking performance of power generation equipment with respect to a load variation and increase the reliability of the power generation equipment, a dynamic characteristic model simulating the dynamic characteristics of a multi-shaft gas turbine is used to calculate an output prediction value of a first power generator in a case where a combustor is controlled so as to match the output of the first power generator to an output target value; on the basis of the output target value and the output prediction value of the first power generator, a first power generator output instruction value as an instruction value for the output from the first power generator to a power system and a second power generator output instruction value as an instruction value for the output from a second power generator to the power system are calculated; and the combustor is controlled on the basis of the first power generator output instruction value and a frequency convertor is controlled on the basis of the second power generator output instruction value.

The invention aims at providing a floating-type tidal current energy power station, which comprises a transverse floating body, a longitudinal floating body, tidal current power generators and lifting mechanisms. The longitudinal floating body and the transverse floating body are orthogonally arranged in the shape of a Chinese character 'zhong'. The transverse floating body is overlapped on the longitudinal floating body. An installation and maintenance shaft is arranged on the transverse floating body. Anchoring chains are installed at the two ends of the longitudinal floating body. Each lifting mechanism comprises a lifting column, power boxes and a limiting stopper, wherein the power boxes are installed on the two sides of the installation and maintenance shaft, the limiting stopper is installed between the two power boxes and is connected with the two power boxes and the lifting column is sheathed in the limiting stopper. Each tidal current power generator comprises a cabin shell; and a power generator, a transmission shaft, a speed increaser, blades, a hub and a fairing cap which are installed in the cabin shell and are sequentially connected. The tidal current power generators are respectively connected with the lifting columns. By adopting a power station structure which is of the shape of the Chinese character 'zhong', the tidal current energy power station is guaranteed to have better stability, and the power generation performance of the tidal current power generators is improved; and the structure is simple and the production cost is low.

The invention relates to a switched reluctance generator current transformer topology and a control method thereof. The topology comprises an excitation power source, a main current transformer circuit, a bus capacitor, an isolated DC/DC converter and a discharging circuit, wherein the excitation power source supplies electric excitation for the main current transformer circuit. Through the main current transformer circuit structure and the control method thereof, the excitation effect can be enhanced, the charging circuit works when a storage cell of the excitation power source needs charging and enhancing power output capability and protection, power generation initial current capability is protected and properly enhanced through controlling the discharging circuit, whole system intelligence, high efficiency and high benefits are realized, a special excitation initiating power source is omitted, and the topology and the method are suitable for application in the small and medium switched reluctance generator current transformer field.

The invention relates to a self-monitoring conical ball bearing for a generator, and belongs to the technical field of bearings. An excitation disk embedded with an excitation magnet I and an excitation magnet II is arranged on an outer ring; a right clamping plate is arranged on an inner ring; a thermocouple, a circuit board and a left clamping plate are arranged on the right clamping plate; a metal film is pressed between the left clamping plate and the right clamping plate; a piezoelectric film is adhered to the metal film to form an energy harvester; an excited magnet I is arranged on the energy harvester and is positioned in a guide hole in the left clamping plate; a pressing plate presses a disk-type spring, an excited magnet II and a piezoelectric body for measuring the rotating speed into a blind hole in the left clamping plate in sequence; the piezoelectric body, the energy harvester and the thermocouple are respectively connected with the circuit board through wire groups. The self-monitoring conical ball bearing for the generator has the advantages and the characteristics that automatic power supply, sensing and monitoring functions are realized, the structure of mounting equipment is not required to be changed, and true real-time and on-line monitoring can be realized; configuration parameters of the structure of energy harvester and the excitation magnets are reasonably determined, and the power supply and generation capacity is high; by the adoption of the guide hole, the excited magnets can be prevented from being twisted, and the reliability of the energy harvester is improved.