456results about How to "Stable power generation" patented technology

A solid polymer fuel cell which can stably generate electric power for long, because the cell is enabled to uniformly supply a fuel gas to all anodes by means of extended flow passages which are extended from anode-side flow passages and formed on a anode-side plate on the downstream side of the ends of the anodes in the direction of fuel gas flow, a water absorbing means for nearly uniformly performing water absorption, water retention, and drainage on all channels provided at the ends of the extended flow passages, and a selective gas discharging means for discharging a gas more selectively than water on the upstream side of the water absorbing means. In addition, the power generation characteristics and service life of the fuel cell can be improved further, because the cell can maintain a solid polymer film in a moist state as a whole and can efficiently supply the fuel gas to all anodes by a means for distributing the fuel gas to the inlet sections of the anode-side flow passages and a means for distributing water from a water source to the inlet sections of the anode-side flow passages through holes having a prescribed form and leading to the inlet sections of the anode-side flow passages.

An object of the present invention is to minimize the torsional vibration caused on the shafting of the wind turbine genarator system so as to operate the windmill stably. A wind turbine genarator system according to the present invention, equipped with a synchronous generator connected to the shaft of a windmill, converter connected to the stator of the synchronous generator, and inverter connected to the converter and also to an electric power system, extracts the torsional vibration component of the shafting between the windmill and synchronous generator from the detected rotation speed of the synchronous generator, regulates the active component of the current command to the converter according to the vibration component, and controls so as to minimize the rotation speed variation of the synchronous generator.

The invention discloses a commercial vehicle fuel cell engine air supplying system. The system comprises an internal resistance detector, a controller, a fuel battery voltaic pile, a hydrogen supplying system and an air supplying system. The commercial vehicle fuel cell engine air supplying system has the advantages that the recycling of hydrogen is achieved, the supplying flow rate and pressure of the hydrogen and air can be accurately controlled, and therefore sustainable and stable power generation of a fuel cell can be ensured; the internal resistance of the fuel cell voltaic pile can be detected to judge the humidity of a proton exchange membrane, internal water management of the fuel cell is effectively conducted by adjusting the opening degree of a tail discharging valve and a humidifying valve, and the efficiency and output performance of the fuel cell are improved.

A fuel cell system and an idle stop controlling method for the fuel cell system. The fuel cell system includes: a fuel gas supply means for supplying fuel gas; an oxidant gas supply means for supplying oxidant gas; a fuel cell to which the fuel gas and the oxidant gas are supplied for generation of electricity; an idle stop means for stopping generation of electricity by the fuel cell to perform idle stop; and an unstable state detection means for detecting whether the generation of electricity by the fuel cell is unstable. If the unstable state detection means detects that generation of electricity by the fuel cell is unstable, idle stop by the idle stop means is prohibited so that the fuel cell continues to generate electricity.

The invention discloses a wind and solar hybrid energy storage and power generation integration system and process. The system comprises a wind power generation subsystem, a solar energy storage subsystem, a liquefied air subsystem and a power subsystem. The process comprises the following steps: solar energy is gathered by a thermal collector to obtain heat energy, the heat energy is stored in heat storge medium; wind energy is converted to electric energy, the wind power is used to liquefy air and stored in the liquefied air; and when electricity is required, the liquefied air is pressurized to recycle cold energy for the air liquefying process, then the air is heated by the high temperature heat storge medium which stores solar energy to obtain high temperature and high pressure air, and finally the air is sent to a multistage reheating turbine to expand and do work. The system of the invention recycles the cold energy of the liquefied air to reduce the wasted work for air liquefying; a pump is used to increase the pressure of the working medium, thus reducing the wasted work for compressing the working medium; the turbine utilizes recycled heat for exhaustm, thus effectively utilizing heat energy; solar energy is utilized to heat the working medium at the inlet of the turbine, thus increasing the expansion efficiency of the turbine; and wind energy and solar energy can be utilized for complementation, energy storage and power generation can be integrated and the system of the invention has wide application prospect.

A voltage generator includes a boosting circuit boosting a power voltage to generate first through fourth voltages, and a boosting controller controlling the boosting circuit. The boosting controller sets the third and fourth voltages to a voltage level lower than that of a ground voltage while the first and second voltages are generated, so that a plurality of voltages may be stably generated, i.e., without latch-up.

The invention discloses a multi-ground-clearance self-steering intelligent sprayer and a control method. The sprayer comprises a vehicle platform, two self-steering traveling mechanisms, a controllable lifting spraying device, a gasoline power generation and supply device and a control device, and each self-steering traveling mechanism is connected with the vehicle platform by adopting a rotation structure; the controllable lifting spraying device is fixed at the tail of the vehicle platform and comprises a sprayer lifting mechanism, a spraying rod device and a drug mixing device, the spraying rod device is arranged on the sprayer lifting mechanism and connected with the drug mixing device, and a spraying rod can move up and down along with traction of the sprayer lifting mechanism; the drug mixing device is fixed in the middle of the vehicle platform and provides drug to spraying equipment for spraying, the gasoline power generation and supply device is fixed on the front portion of the vehicle platform and serves as a stable voltage power source of the equipment, and the control device is connected with driving equipment, a control motor and multiple sensors. Four hub motors are controlled by the control device to realize self-steering of wheels at differential speeds, and the sprayer is high in control accuracy and small in turning radius.

According to the present invention, there is provided a power generator that can generate power having a predetermined voltage and a predetermined current even though external energy is slight or excessively strong when generating power based on water power or wind power, the power generator comprising: a magnet rotor that rotates upon receiving rotating force from a driving source; and a stator coil arranged to face magnetic poles of the magnet rotor, the magnet rotor including: a rotary shaft rotatably and axially supported by a housing; and permanent magnets that form a plurality of magnetic poles on a concentric circle with the rotary shaft at the center. The stator coil includes: a plurality of coreless winding wires arranged to face the magnetic poles formed in the rotor; and a three-phase output terminal. Thus, the plurality of coreless winding wires are formed of effective output winding wires whose number is three or its multiple number, and they are connected with the output terminal through switching means so as to enable switching a total number of turns to a large or small value. This switching means is connected to controlling means in such a manner that the total number of turns is reduced when the rotating force from the driving source is large and the total number of turns is increased when the rotating force is small.

There is provided a plasma processing apparatus capable of stably generating plasma by suppressing oscillation of a plasma potential, and capable of preventing contamination caused by sputtering a facing electrode made of metal. A high frequency bias power is applied to an electrode within a mounting table for mounting a target object thereon. An extended protrusion 60 is formed at an inner peripheral surface of a cover member 27. The extended protrusion 60 is formed toward a plasma generation space S and serves as a facing electrode facing an electrode 7 within a mounting table 5 with the plasma generation space S therebetween. A ratio of a surface area of the facing electrode with respect to that of an electrode for bias (facing electrode surface area/bias electrode area) is in a range of from about 1 to about 5.

The present invention provides a fuel cell apparatus in which stable power generation can be performed by achieving both temperature control and humidity control with a simple structure, whereby enabling downsizing of the fuel cell apparatus. The fuel cell apparatus which uses air as an oxidizer includes: a fuel cell stack including multiple fuel cell units laminated to each other; an oxidizer flow path having a first opening portion and a second opening portion at both ends thereof, for supplying the air to the multiple fuel cell units; a manifold for covering at least a part of the first opening portion; a first blowing unit provided to the manifold, for ensuring an air amount required for power generation in the fuel cell stack; and a second blowing unit provided to the manifold, for controlling a humidity state of the fuel cell stack.

The object of the present invention is to provide a bipolar plate for a fuel cell, suppressing the stay of condensed water in a gas diffusion layer and improving gas diffusion performance. The bipolar plate supplies reaction gas to a power generating surface and has a channel for the reaction gas. The channel is formed with ribs which are made of a conductive material laminate. The ribs have a porous structure and water repellency. The water repellency of the ribs is set lower than that of an adjacent gas diffusion layer. Thus, the condensed water can be moved from the gas diffusion layer to the ribs in an area where the gas diffusion layer and the ribs are in contact with each other. Therefore, deterioration of the gas diffusion performance due to the stay of the condensed water in the gas diffusion layer can be prevented.

The invention discloses a monitoring method of a junction box for a photovoltaic module, comprising the following steps of: a. setting an electrical signal acquisition point inside the junction box, acquiring a voltage signal, a current signal, a temperature signal and a magnetic flux signal in the acquisition junction box and transmitting the acquired signals into a signal detection box; b. processing and calculating the received signal by the signal detection box to obtain data and outputting the data through a signal output port; c. transmitting the data output from the signal output port to a terminal monitor by a data transmitting channel; d. identifying the received data and determining the corresponding area of the photovoltaic module, in which the junction box is arranged by the terminal monitor; and e. counting, analyzing and processing the data, judging the work state of the junction box, determining the actual work condition of a photovoltaic battery plate string corresponding to the junction box and positioning to find out the damaged battery plate by the terminal monitor. The invention solves the problems that the actual work condition of a photovoltaic system cannot be effectively monitored and controlled currently and the damaged battery plate cannot be found out by one-step positioning.

A control unit calculates an integration value resulting from integration of the amount of an impurity other than a fuel gas at a hydrogen electrode, which varies in accordance with a gas pressure at the hydrogen electrode and the temperature of a fuel cell stack, when a hydrogen purge valve is set in a closed state and controls the hydrogen purge valve in an open state when the integration value becomes equal to or greater than a threshold value. The control unit calculates an integration value resulting from integration of a discharge gas flow rate from the hydrogen purge valve, which varies in accordance with the gas pressure at the hydrogen electrode and the temperature of the fuel gas, when the hydrogen purge valve is set in the open state and controls the hydrogen purge valve in the closed state when the integration value becomes equal to or greater than a threshold value. This makes it possible to eliminate impurities culminated in a fuel gas system, to ensure stable power generation over a wide range of operational load, and to minimize the amount of fuel discharge, thereby improving the efficiency of fuel usage.

The invention relates to a novel geothermal and optothermal cogeneration system, which is characterized by comprising a geothermal evaporator, a solar overheater, a prime motor, a prime motor exhaust port, a working medium compression device, an air-cooling radiator, a liquid storage tank and a working medium booster pump. The solar overheater, the prime motor, the prime motor exhaust port, the working medium compression device, the air-cooling radiator, the liquid storage tank and the working medium booster pump are sequentially communicated with the geothermal evaporator; and the prime motor is respectively communicated with the working medium compression device and the air-cooling radiator through a three-way reversing valve. The invention has the advantages that a substance with a lowboiling point is used as a working medium for power and refrigeration circulation, the medium-temperature and low-temperature geothermal heat can be used as a heat source for evaporation of the working medium, solar energy is adopted as an overheating source for the working medium, and the geothermal evaporator is arranged in a downhole. The circulating working medium is delivered into the evaporator at the bottom of a geothermal well for evaporation to absorb heat of geothermal fluid, geothermal hot water needs not to be pumped to the surface, the evaporation temperature of the working medium can be increased, well backfilling can be eliminated, corrosion and scaling can be reduced, and the service life of the system can be prolonged. Moreover, the system has a simple and reasonable structure and good economical performance in heat for power generation.

A system and device for providing AC signal. The system includes: an AC generator that outputs an AC output signal and includes an AC rotor that communicates with a shaft that is rotated at a rotation speed; a speed sensor for sensing the rotation speed; and a controller for controlling a magnetic field of the AC generator in response to the rotation speed; wherein the controller comprises a Field Exciter for providing a current to the AC generator so as to control the magnetic field of the AC generator.

The invention discloses a multifunctional integrated hydraulic-drive generating device. The multifunctional integrated hydraulic-drive generating device comprises a wind power conversion module, a lumped hydraulic drive generating module, a wave conversion module, a tidal current energy conversion module, a connecting upright column, a supporting cross beam and a fixed pile base. The multifunctional integrated hydraulic-drive generating device provided by the invention can simultaneously collect outshore wind energy, surface wave energy and underwater tidal current energy on a unit for power generation, each part fully adopts driving hydraulic pressure, dispersive energy can be gathered to push a generator to rotate in a hydraulic energy form, and multiple energy is coupled and complemented, so that energy density and generating efficiency are improved, and the generating device can generate electricity stably. The whole generating device adopts a modularization combined design, and thus the unit cost and the marine transportation construction cost are reduced. The multifunctional integrated hydraulic-drive generating device provides a high-cost-performance ocean energy development mode, the generated electricity is stable and can be combined to a power grid, supplied to an offshore facility or be applied to off-island power supply, and thus the multifunctional integrated hydraulic-drive generating device has high economic values and important social effects.

The invention relates to an oscillating buoy type ocean wave power generating device. The oscillating buoy type ocean wave power generating device comprises a wave power absorbing device which floats on the sea, a supporting device which is connected with the wave power absorbing device by a sliding device, a conversion device and an output device which is connected with the conversion device. The supporting device comprises an upper supporting frame and a lower supporting frame which are arranged in parallel and with same axle center. The upper supporting frame and the lower supporting frame are both mounted on an ocean column in a sleeving manner. A main shaft of the conversion device is connected with a generator rotary shaft of an input device. According to the device, the up-and-down reciprocating motion of wave can be converted into the rotation of the main shaft through sprocket chain transmission. The main shaft is connected with a energy storage flywheel, so that an electric generator can run stably during the conversion of the ascending and descending of the wave power absorbing device under the action of the wave. The continuity of power generating can be guaranteed, so that the stability of power generating can be guaranteed.

The invention discloses a movable charging vehicle for an electric automobile. The movable charging vehicle comprises a self-powered ecological system and a charging terminal, wherein the self-powered ecological system is connected with the charging terminal, and the electric automobile is charged through the charging terminal; the charging terminal comprises a fixed station and a movable charging mechanism, the movable charging mechanism is used for charging through the fixed station and then is connected with the electric automobile for charging the electric automobile, so that unused batteries in the electric automobile can be charged when the electric automobile is driven, or batteries being used in the electric automobile can be charged. Or, the movable charging mechanism is portable hydrogen production power generation equipment; and the portable hydrogen production power generation equipment comprises a second methanal power generation unit, methanal is used for preparing hydrogen, and then the hydrogen is used for power generation, so that the electric automobile is charged. The movable charging vehicle for the electric automobile provided by the invention is movable flexibly, so that the problem that the electric automobile is inconvenient to charge is solved.

The invention relates to a wind power generation system. According to the wind power generation system, flywheels are taken as energy storage devices, a one-pole dc magnetic driver (HET) is taken as flywheel energy transmission equipment, the stable power generation function is realized, and energy transmission advantages of the HET perform; a vertical flexible flywheel and a suspension type flexible flywheel are further employed, problems of a large-mass flywheel and a bearing are solved. HET speed change transmission is employed between the flywheel and a generator to greatly improve wind energy capture efficiency. Three schemes for energy transmission among a wind wheel, the generator and the flywheel, the first scheme is a no-HET scheme between the wind wheel and the generator, namely, an energy storage device and energy transmission equipment thereof are added to a routine wind power system in the prior art, the second scheme is an independent HET scheme between the wind wheel and the generator, the third scheme is a scheme through which the wind wheel, the generator and the flywheel are respectively connected with one HET half matching part.

The invention relates to an airflow generating system and a method thereof. The system comprises an air source, a passage, at least an unpowered air draft device and at least a turbine generator set, wherein, the passage comprises an airflow inlet and an airflow outlet which are communicated with the air source; the unpowered air draft device is installed at the airflow outlet and is positioned in a natural wind field; the turbine generator set at least comprises rotating blades positioned in the passage; and driven by the airflow of the air source and/or the external wind power, the unpowered air draft device forms the negative pressure in the passage, and constantly sucks in air from the air source to form the airflow in the passage, and the airflow pushes the rotating blades to rotate so as to drive the turbine generator set to generate electricity. The system of the invention can constantly run, stably generate electivity, lower the dependence on weather and overcome the unicity and the limitation of clean energy of single type.

A reformer includes: a reformer container in which a reforming chamber having a substantially annular space filled with a reforming catalyst is defined; a heater disposed substantially on a center axis of the reformer container; and a circular portion having a plurality of double-pipe structures each of which includes: a feed pipe connected to a first axial end of the reformer container for feeding the material gas to a first axial end of the reforming chamber; and a return pipe substantially coaxially fitted into the feed pipe such that its first end penetrates the reforming chamber and opens in a vicinity of a second axial end within the reforming chamber so as to allow the reformate generated by reforming the material gas to flow thereunto. The reformer provides an efficient and stable reforming treatment with a simplified structure.