43results about How to "Maximize power generation efficiency" patented technology

It is an object of the present invention to provide a fuel cell which can supply a liquid fuel, without changing its composition, to every corner of the membrane electrode assemblies arranged two- dimensionally over a wide area, to generate power at a high efficiency.

The fuel cell 10A comprises the membrane electrode assembly modules 20 which consume the liquid fuel 40 to generate power, and the fuel chamber 30 which holds the liquid fuel 40 inside and has the principal plane on which the membrane electrode assembly modules 20 are arranged, wherein the fuel chamber 30 is provided with the fuel injection hole 33 inside, through which the liquid fuel 40 is supplied under pressure from the outside, and the fuel supply gear 42 inside, which is located to come close to the membrane electrode assembly modules 20, the fuel supply gear 42 being provided, on the surface, with the fine pores 43 through which the liquid fuel 40 can pass.

An accumulated type thermoelectric generator that includes an assembly of a plurality of unit modules in which a first thermoelectric element and a second thermoelectric element are installed, is mounted between an exhaust gas inlet pipe and an exhaust gas outlet pipe. A coolant inlet is formed within an upper portion of an outermost unit module in a direction of the exhaust gas outlet pipe, and a coolant outlet is formed within a lower portion of an outermost unit module in a direction of the exhaust gas inlet pipe. A pair of exhaust gas flow paths through which exhaust gas flowing into the exhaust gas inlet pipe flows may be formed on left and right sides of the unit module, and a pair of coolant flow paths through which coolant flowing into the coolant inlet flows is formed within upper and lower sides of the unit module.

According to one embodiment of the present invention, a solar panel curtain device comprises: a solar panel provided tilting at a predetermined angle relative to the ground surface, corresponding to the angle of incidence of sunlight; a first roll housing provided at the lower edge of the solar panel, having formed therein a first rotational shaft and a solar panel curtain accommodating space, and having formed on one side thereof a slot adapted such that the solar panel curtain can withdraw into the inner accommodating space or advance out of the inner accommodating space; a second roll housing provided at the upper edge of the solar panel, and having formed therein a second rotational shaft; a first rail and a second rail respectively touching the two ends of the first rotational shaft and the two ends of the second rotational shaft, and performing rotational motions on two sides of the solar panel; and a panel curtain of which the ends on both sides respectively touch the first rail and the second rail, and which operates so as either to be stowed in the inner accommodating space of the first roll housing or to cover the solar panel, in accordance with the rotational motions of the first rail and the second rail.

The invention discloses a primary frequency modulation method of a doubly-fed wind-driven generator set based on variable power point tracking and supercapacitor energy storage coordinated control inthe technical field of new energy so as to enable the wind-driven generator to perform maximum power point tracking without disturbance or a system load increase and maximize the power generation benefit. When the load is reduced, the primary frequency adjustment control is started, the additional power is superimposed onto the output power under the maximum power tracking according to the frequency deviation and the virtual inertia control to obtain the final reference power to achieve the frequency adjustment. In order to realize the spare capacity supply required by primary frequency modulation, the supercapacitor is connected through a bidirectional DC/DC converter to the DC-side bus capacitor of the doubly-fed wind-driven generator set. A grid-side converter has a function of maintaining the stability of the DC bus capacitor voltage. The discharge power of the supercapacitor energy storage device flows directly to the load side through the grid-side converter.

The invention discloses a cascade reservoir power generation scheduling method and system, and belongs to the field of reservoir optimal scheduling. The method specifically comprises the following steps: determining a cascade reservoir reserved flood control reservoir capacity distribution method set by utilizing the size of the reserved reservoir capacity at the end of a cascade reservoir scheduling period; according to the reserved flood control reservoir capacities allocated to all the reservoirs, deducing the scheduling period end water level corresponding to the reserved flood control reservoir capacities through a reservoir water level reservoir capacity curve, and forming a cascade reservoir scheduling period end water level set; establishing a power generation scheduling model taking the maximum power generation capacity of the cascade hydropower station as a target by utilizing the initial water level and the final water level of the cascade reservoir scheduling period and thepower generation flow and constraint conditions of the reservoir; and solving the power generation scheduling model by adopting a deterministic optimization scheduling method, and screening out the optimal operation mode of the cascade reservoir. By converting the reserved flood control reservoir capacity of the cascade reservoir in the drainage basin dispatching period into the water level constraint at the end of the dispatching period, the power generation benefit of the cascade reservoir is maximized on the premise of guaranteeing flood control safety, and the flood control benefit and the power generation benefit are both considered.

Advanced Tandem Organic Rankine Cycle (AT ORC) is described for recovering power from source of heat energy into two separated independent cycles with organic fluid of propane or mix of light hydrocarbons with similar thermal stability, namely the high temperature cycle realized in the high temperature closed loop thermally connected to the high temperature zone, and the low temperature cycle realized in the low temperature closed loop thermally connected to the low temperature zone of the source of heat energy. In the process of each cycle, organic fluid changes phases from pressurized liquid to pressurized superheated organic vapor using residual heat energy from depressurized superheated organic vapor, and heat energy from corresponding temperature zone. Separation of the source of heat energy on the high temperature zone and low temperature zone is implemented to maximize thermal and overall efficiency of recovering power in each cycle and of the overall AT ORC.

The invention discloses an optimized dispatching method for a power distribution network containing distributed power supplies. The method comprises the following steps: collecting data, market information and uncertain information of all nodes of the distributed power supplies in the power distribution network in different regions, carrying out the preprocessing on the data, market information and uncertain information, and storing the data, market information and uncertain information into a data information cloud platform; calling the data information cloud platform, and based on the multi-target attribute of the system and by taking the economic benefit of the power distribution network, the loss of the power distribution network and the power generation cost of the distributed power supplies as optimization targets, constructing an optimized dispatching model for the power distribution network according to constraint conditions; taking the constraint conditions as decision analysis conditions, outputting prediction data of each region and a given specific range of uncertain fluctuation, inputting corresponding operation schemes and uncertainties into a plurality of optimization objective functions, and calculating overall benefits; and allowing decision makers of different regions to compare the overall benefits of schemes and the development conditions of the regions to select an optimal strategy as an optimized dispatching scheme.

Disclosed herein is a closed loop type fuel cell system having a removal function for an oxidant and a reductant, which are unreacted material, including a recirculating means recirculating oxidant and reductant discharged from the main fuel cell back into the main fuel cell; and a regenerating means for removing moisture produced during the operation of the main fuel cell and impurities contained in the recirculated oxidant and reductant.

The invention relates to an all-weather continuous power generation device capable of being assembled in a modular mode, which comprises a radiation refrigerating device, a photo-thermal conversion device, a thermoelectric conversion device and a heat conduction substrate which are assembled and connected in a modular mode, the thermoelectric conversion device is arranged on a heat conduction substrate, and the radiation refrigerating device and the photo-thermal conversion device are respectively connected with the thermoelectric conversion device in a heat transfer manner. Compared with the prior art, the power generation device is not limited by time and regions, can generate power by utilizing the temperature difference between the photo-thermal conversion device and the radiation refrigeration device in the daytime and can generate power by utilizing the radiation refrigeration device and the environment temperature on the surface of the earth at night, and the device structure and size can be designed and can be modularly assembled according to the environment characteristics; and the utilization of energy is maximized.

A bicycle generator hub is mounted to the front fork of a bicycle and includes a hub shaft, a hub shell, bearings, a generator mechanism and first and second magnetic flux recirculation members. The hub shaft is non-rotatably mounted to the front fork. The hub shell is disposed around the surface of the hub shaft. The bearings are disposed between the hub shell and the hub shaft to enable the hub shell to rotate relative to the hub shaft. The generator mechanism has a coil mounted to the hub shaft and a magnet unit disposed such that the generator mechanism generates electric power via the rotation of the hub shell relative to the hub shaft. The first and second magnetic flux recirculation members are disposed on the hub shaft or the hub shell and return a leaked magnetic flux to the coil.

A floating body for tidal current power generation of the present invention comprises: a power generation unit comprising a water wheel and a power generator connected to the water wheel; and a body part provided with tidal current inlet and outlet paths having a cross-sectional area that is gradually reduced from the front and rear surfaces thereof toward the water wheel. According to the present invention, a plurality of floating bodies for tidal current power generation are disposed in parallel so that the longitudinal direction of the tidal current inlet and outlet paths coincides with the direction of the tidal current in a terrain such as a strait with a narrow width. In addition, provided is a power generation method which is a method for adjusting the draft of a floating body for tidal current power generation depending on the flow velocity of the tidal current, thereby smoothly performing power generation even when the flow velocity of the tidal current becomes slower as tidal stand nears.

The invention discloses a thermoelectric power generation device and a power generation method thereof. The device takes heat conduction oil as a heat exchange medium, is flexible to use and high in adaptability, is especially suitable for waste heat utilization occasions where a thermoelectric power generation sheet array (20) is not easy to be directly placed, and realizes maximization of powergeneration efficiency in key technologies of links of power consumption optimization of a water pump (42), power consumption optimization of a high-temperature oil pump (4) and impedance matching of the thermoelectric power generation sheet array and a load and the like. The device and method can be applied to the fields of waste heat utilization semiconductor thermoelectric power generation.

The invention provides an advanced flow-collecting and flow-controlling variable-pressure flow field system which becomes novel wind power generation basic theory and system engineering technology. By the flow-collecting control of the flow field, the system changes the wind speed and wind pressure, improves the wind energy density ratio and leads the airflow in nature to be changeable and compressible. When the airflow passes through a vortex body, the pressure of the flow field is changed so that the wind energy conversion ratio of a resistance-typed wind power machine is higher than that of a resistance-increasing wind power machine. A multi-pole differential-speed power generator is suitable for working at a rated power under the minimum and maximum wind speed working condition, thus realizing high-capability assembly of a single unit. The system changes the Betz theory created by Betz who is a famous physical scientist in Germany and is the founder of wind power theory on the basis of natural flow field, and negates the issue that in the Betz theory system, the airflow in the nature can not be compressed and the issue that the wind energy conversion ratio of the resistance-increasing wind power machine is more than that of the resistance-type wind power machine.

A vertical-axis wind power generator having adjustable-angle rotating blades is provided, which can maximize generation efficiency through angle adjustment of rotating blades for upper and lower support arms. The vertical-axis wind power generator having adjustable-angle rotating blades is configured such that a rotation angle range, in which forward-rotation wind power is applied to the rotating blades, can be maximized and a rotation angle range, in which reverse-rotation wind power is applied to the rotating blades, can be minimized through angle adjustment of the rotating blades so as to apply maximum forward-rotation wind power to the rotating blades and to apply minimum reverse-rotation wind power thereto, and through angle adjustment of the rotating blades so as to generate forward rotation even by reverse-rotation wind power in a partial angle range.

The invention discloses a wind wheel with the adjustable blade number and a working method thereof. The wind wheel mainly comprises fixed blades, a fixed hub, adjustable blades, an adjustable hub, a main shaft, a control device, a supporting rod, a hub axial fixing rod, a hydraulic locking pin shaft and pin holes, wherein the fixed blades are fixed outside the fixed hub, and the fixed hub is fixedon the end surface of the main shaft; the adjustable blades are connected with the adjustable hub through bolt connecting structures, and a first motor is used for driving a driving gear and a drivengear to rotate and driving the adjustable blades to rotate around a screw; the adjustable hub is connected with the main shaft through a spline structure; the hub axial fixing rod is connected with the hydraulic locking pin shaft and the pin holes, so that the axial fixation of the adjustable hub is realized; and the control device drives a gear to rotate through a second motor, the movement of the control device in the horizontal direction is realized, and the third motor drives the supporting rod to rotate and is used for being connected with the hub supporting hole. The number of the blades of the wind wheel can be adjusted according to the change of the external wind speed of a wind turbine generator, and the power generation capacity of the wind turbine generator is maximized.