40results about How to "Meet electricity needs" patented technology

The invention discloses automatically-registrated plug and socket comprising a plug body and a socket body as well as permanent magnets A matched with the electrodes I, wherein the end part of the plug body is provided with two electrodes I, synonyms electrodes of the permanet magnets A corresponding to the electrodes I are set as synonyms poles, a single round hole is formed on the socket body and is an imbedding hole for the plug body, the bottom of the single round hole is provided with two electrodes II, permanent magnets B matched with the electrodes II, and the synonyms electrodes of the permanet magnets B corresponding to the electrodes II are set synonyms poles. When the plug is close to the single round hole of the socket, the plug and the socket are guided to be in butt joint by virtue of mutual repulsion or attraction of poles so as to complete automatic registration and contact of electrodes. Registration refers to registration of the plug and the socket hole as well as the registration of the electrodes of the plug and the socket. The automatically-registrated plug and socket can be widely applicable to AC power supply coupling of household appliances, thus facilitating use of household appliances for customers and having a good market prospect.

The invention discloses a novel solar letter box including a letter box body and a solar generation device, the letter box body includes a display screen and a letter inlet, the solar generation device is fixed at the upper part of the letter box body, the solar generation device includes a frame body and angle modulation devices arranged at the top of the frame body and arranged in left-right correspondence, the frame body is arranged at the upper part in the letter box body, the angle modulation devices extend out of the upper surface of the letter box body, each angle modulation device includes a pole arranged at the left side, a moving column arranged at the right side, and a solar panel arranged between the pole and the moving column, horizontally extending guiding cavities are arranged in the frame body in a left-right correspondence manner, and a channel extending along the left and right sides of the top of the guiding cavity penetrates through the top of each guiding cavity. The novel solar letter box is simple in structure, meets the letter box power consumption need through solar generation, reduces the equipment investment input, reduces the manufacturing and maintenance costs.

The invention discloses a power system economic dispatching method and relates to the technical field of power systems to solve the problem of economic dispatching of a power system merged into a renewable energy power station. The power system economic dispatching method comprises the steps of acquiring a network structure and network parameters of the power system, generated output corresponding to a traditional energy power generator in the power system and power generator parameters, power generated output corresponding to a renewable energy power generator in the power system and power generator parameters, a load model and load parameters of loads in the power system, power transmission power of a power transmission branch in the power system and power transmission branch parameters and an energy storage model of an energy storage device in the power system and energy storage equipment parameters; establishing an initial economic dispatching model of the power system; establishing an optimal dispatching model of the power system, wherein the renewable energy abandoning quantity in the power system is within a preset tolerance range, and power generated by the renewable energy power generator is not used for energy storing; an economic dispatching result with the minimal comprehensive cost is calculated.

The invention discloses an active battery. The active battery comprises a cylindrical insulating casing, an external connection plug and a power conversion device, wherein a metal cap serving as a positive pole of a power supply is arranged at the top end of the cylindrical insulating casing; the power conversion device is mounted in the cylindrical insulating casing through a circuit board; a power socket is formed in the cylindrical insulating casing, is electrically connected with an input end of the power conversion device, and is matched with the external connection plug in use; the output voltage of an output end of the power conversion device is direct-current voltage ranging from 1.5V to 6V. The power conversion device is mounted in the cylindrical insulating casing simulating the structure of a casing of a dry battery to convert 220-V alternating-current commercial power into stable low-voltage direct-current voltage, is used for supplying power to small household appliances and can replace a traditional chemical dry battery in a certain range. The active battery has the characteristics of no need of replacement of the battery, energy conservation and environmental protection, and is especially applicable to the small household appliances such as radios, gas stoves, electronic clocks, calculators and the like which are placed relatively fixedly or are seldom moved.

The invention provides an electricity generation device which comprises a floating cabin, an upper fixed sliding ratchet wheel, an upper mooring rope and a gravity hammer. The upper fixed sliding ratchet wheel is higher than the floating cabin and the gravity hammer. One end of the upper mooring rope is connected with the upper end of the floating cabin. The other end of the upper mooring rope winds around the upper fixed sliding ratchet wheel to be connected with the gravity hammer. The floating cabin is arranged on the water surface. The mass of the floating cabin is larger than that of the gravity hammer. The upper fixed sliding ratchet wheel is connected with a first electricity generator through a first acceleration transformer, and an output shaft of the first acceleration transformer is coaxial with a rotor shaft of the first electricity generator. The electricity generation device has the advantages of being low in investment, easy to build, good in wind resistance, good in environmental adaptability, high in economic benefit, long in service life and capable of meeting electricity consumption requirement to the highest possible, being the optimal technology for converting wave energy into electric energy, and being the green and environment-friendly new energy renewing technology.

The invention discloses an unpowered loopback auxiliary power supply and self-walking device for locomotives. The device comprises two schemes; in the first scheme, the device comprises a boosting type DC/DC module, a bucking type DC/DC module, a single-phase inverter module, a three-phase inverter module, a traction inverter module and a controller; and in the second scheme, the device comprisesa bidirectional DC/DC primary module, a bidirectional DC/DC secondary module, a single-phase inverter module, a three-phase inverter module, a traction inverter module and a controller. According to the device, a traction motor can be controlled to carry out regenerative braking when being dragged to run, so as to generate power and generate a certain life power supply capacity, so that the operators can watch over on locomotives confidently and securely so as to smoothly complete the locomotive repair/loopback tasks; and DC400V or higher high-power DC power supply can be provided outside thelocomotives to realize shunting operations under speed limiting requirements.

A disc type magnetism increasing DC generator is a pure magnetic energy DC generator consisting of a drive motor, a DC generator, and a disc brush conductive output apparatus. The DC generator mainly consists of a permanent magnet magnetic source, a power generation disc rotor and a magnetism increasing coil. The power generation disc rotor cuts magnetic lines to generate a current, the current flows through the magnetism increasing coil to generate magnetoelectric potential, thereby enhancing magnetic energy of the DC generator, and raising output power of the DC generator. The DC generator and the drive motor operate coaxially, magnetic energy and power generation energy of the DC generator are much greater than magnetic energy and power consumption energy of the drive motor. Electric power outputted by the DC generator is much greater than electric power consumed by the drive motor. The disc type magnetism increasing DC generator can operate by using an own power generation power supply without any fuel and other power source after being started by a controller.

The invention discloses a single-phase-to-three-phase power supply system based on a three-phase YNd transformer. The system comprises a power transmission line, an isolation transformer, a power converter and a three-phase YNd transformer. The power transmission line is connected to a terminal P at the input end of the isolation transformer and a terminal A of a star-shaped winding of the three-phase YNd transformer. A terminal M and a terminal N at the output end of the isolation transformer are respectively connected with a terminal R and a terminal S at the input end of the power converter. A terminal B and a terminal C of the star-shaped winding of the three-phase YNd transformer are respectively connected with a terminal J and a terminal K at the output end of the power converter. Aterminal a, a terminal b and a terminal c of a triangular winding of the three-phase YNd transformer are connected with a low-voltage power distribution network with a grounded neutral point. A terminal Q of the isolation transformer and a terminal O at the center of the star-shaped winding of the three-phase YNd transformer are grounded. Therefore, single-phase power can be supplied to load operation needing three-phase power, and the system can be widely applicable to power distribution system transformation and fault repair.

This invention relates an integrated unit for electric generation, charging and electric motor. The axle of rotor of mini-generator is connected with rotating part such as axle shaft (of a bicycle), with which rotating together to generate electricity, then being charged to an accumulator. The bicycle carried jack jacking the bicycle up, the wheel rotates to generate electricity, then charging the integrated unit. The electricity from accumulator can drive electricity generator for use as electric motor. This invention unit can be used for outdoor life, field work. Advantages are: convenient to be carried, clean and of environmental protection.

The invention discloses an air cooling system for a helicopter. The air cooling system comprises a fan (1), wherein the shaft of the fan (1) is in belt connection with an engine output end (2), and the engine output end (2) rotates to drive the fan (1) to rotate. The air cooling system is suitable for being installed in a narrow space in an unmanned aerial vehicle, the structure is compact, the shape of the unmanned aerial vehicle does not need to be changed, and the air cooling system can adapt to engine cooling requirements of unmanned aerial vehicles of various models.

The invention discloses an improved solar letter box. The improved solar letter box comprises a letter box body and a solar generation device, wherein the letter box body comprises a display screen and a letter feeding hole; the solar generation device is fixedly arranged at the upper part of the letter box body and comprises a frame body and angle adjusting devices, the angle adjusting devices are correspondingly arranged on the left and right sides of the top of the frame body, the frame body is arranged at the upper part in the letter box body, and the angle adjusting devices stretch out ofthe upper surface of the letter box body; each angle adjusting device comprises a support pillar, a movable pillar and a solar panel, the support pillar is arranged on the left side, the movable pillar is arranged on the right side, and the solar panel is arranged between the support pillar and the movable pillar; and guiding cavities which extend leftwards and rightwards are correspondingly formed in the left and right sides in the frame body, and a channel which extends to the left and right sides of the top of each guiding cavity is formed in the top of each guiding cavity in a penetrationmanner. The improved solar letter box is simple in structure, the electricity requirement of the letter box can be met in a solar power generation manner, the equipment investment is reduced, and themanufacturing cost and the maintenance cost are lowered.

The invention discloses a single-phase to three-phase power supply system based on a Wood bridge connection transformer. The system comprises a power transmission line, a power converter and the Woodbridge connection transformer. The power transmission line is connected to a terminal A of a triangular winding of the Wood bridge connection transformer and a terminal P of the power converter; a terminal B of a triangular winding of the Wood bridge connection transformer is connected with a terminal M of the power converter, and a terminal a, a terminal b and a terminal c of a star-shaped winding of the Wood bridge connection transformer are connected with a low-voltage power distribution network with a grounded neutral point. Therefore, a single electric wire can be used for supplying loadoperation needing three-phase electric energy, and is widely applied to power distribution system transformation and fault first-aid repair.

The invention discloses a rainwater comprehensive utilization device with an electricity generating function. The rainwater comprehensive utilization device comprises a first collecting frame, a frame body device, an electricity generating device, an air cylinder device, a filter device, a shell body device, a heating device and a liquefying device. The first collecting frame is provided with a first through hole, first concentrating blocks, a second collecting frame, a second through hole, a first filter screen, first springs, a concentrating hopper, a first pipeline and a first valve. The frame body device comprises a frame body, a positioning block, a first support, a first fixing rod, a second concentrating block, a second pipeline and a second valve. The electricity generating device comprises a supporting frame, a movable plate, second springs, a pushing pin, a second support, a first roller, a first convex block, a third spring and a fourth spring. The air cylinder device comprises an air cylinder, a pushing rod, a third support, a second fixing rod and a third fixing rod. The filter device comprises a fourth support, a first connecting rod, a third collecting frame, a second filter screen, fifth springs and a sponge block. Rainwater can be utilized to generate electricity, so that the demand of people for the electricity is met.

The invention discloses a combined structure for converting single-phase electricity into three-phase electricity, and relates to the technical field of power grid power supply and distribution. Powertransmission lines are connected to the P terminal of the input end of an isolation transformer and the terminal a of the input end of a single-phase transformer, and the terminal Q of the input endof the isolation transformer is connected with the terminal k of the input end of the single-phase transformer; the terminal M and the terminal N of the output end of the isolation transformer are respectively connected with the terminal R and the terminal S of the input end of a three-port power converter sequentially; the terminal K of the output end of the single-phase transformer is connectedwith the terminal K1of the output end of the three-port power converter; and the phase A, the phase B and the phase C of a three-phase power are connected with a low-voltage power distribution networkwith a grounded neutral point.

The invention belongs to the technical field of insect killing, and discloses a sun-tracking high-energy-collecting wind insect killer. The sun-tracking high-energy-collecting wind insect killer is provided with a photovoltaic panel which is installed at the top of an electric pole through a tracker; an LED insect-attracting lamp is installed on the top of a lantern; an electric power storage tank, a bracket and a slogan flag are installed on one side of the electric pole. The insect killer takes solar energy as the energy, the energy can be increased by 30% or above, electricity needs of street lamps and insect killing are met, and light time full-automatic control is achieved. Rain proofing, damp proofing, thunder prevention and freeze protection are achieved; a 12 V bi-color LED illuminates and attracts insects, the insects are killed by means of the omnibearing multifunction, all flying insects and mosquitoes and flies are killed, therefore, pesticide and mosquito-repellent incense are not used for insect killing any more, and human and livestock health are guaranteed.