72results about How to "Solve the power shortage" patented technology

The invention belongs to the technical field of aviation, relates to an unmanned aerial vehicle, and in particular relates to an unmanned logistics helicopter. The unmanned logistics helicopter comprises a body and rotor wings arranged on the body, wherein the body is of a cross-shaped structure; four body frames are fixed on the cross-shaped structure to support the body; central coaxial opposite-rotating double rotors are mounted at the central position of the body and are powered by an oil drive engine; four electric quad-rotor-wing supplying posture adjusting capacities are mounted at four tail ends of the cross-shaped structure and are powered by four brushless motors respectively; a cargo frame with a rectification shape is hung below the body through a cargo frame bracket. The unmanned logistics helicopter has the advantages of high endurance, safety, energy utilization and convenience in ground control, and can be put into use as an unmanned logistics aerial vehicle.

The invention discloses a multi-microgrid power supply system and control method. The system comprises a plurality of microgrids, mains supply can be in connection with each microgrid through mains switches, and each microgrid can comprises at least one renewable energy device, at least one energy storing device, at least one generating set and at least one load. The energy storing device can utilize renewable energy to generate electricity; the energy storing device can store power; the generating set can generate electricity; the load can consume power. Each renewable energy device, energy storing device, generating set and load can be in direct connection with the mains switches through microgrid switches.

The invention discloses a signal relay device, a mobile terminal and a signal relay method. The device comprises an antenna, a converter coupled to the antenna, a relay circuit coupled to the converter and configured to relay the to-be-relayed signal by using the antenna, and a transmission circuit coupled to the converter and configured to receive or send the data born by a wireless signal by using the antenna, wherein the converter is configured to selectively couple one of the relay circuit and the transmission circuit with the antenna based on the control signal. By using the technical scheme disclosed by the invention, the device has the transmission function of transmitting the signal, and further has the relay function of the relay signal; therefore, the device can relay and forward the signal sent by a wireless router without increasing the relay, the coverage range of the signal is increased, and the problem that the efficiency of the wireless router is insufficient is solved.

The invention discloses an automatic push control system of a vehicle work-generation tyre. The work-generation tyre is characterized in that: a convex surface is manufactured at the ground-contacting part of a vehicle tyre surface; and the work-generation tyre is arranged on a vehicle and can ensure that wheels are not restricted by pavement conditions in the running process to keep the generation of vibration force, therefore, the vibration force is converted into the motive force of the vehicle by utilizing the vehicle gravity and using a vibration force conversion device. The vehicle work-generation tyre of the invention can automatically push the vehicle to travel forwards by utilizing the vibration force in the vehicle traveling process, drive a power generator to generate the electricity so as to complement the electric power, realize oil saving of an engine vehicle, electricity saving of an electric vehicle and energy self-complementation, greatly solve the problem of motive power shortage of the electric vehicle and realize green and environmentally-friendly traveling of the vehicle and has favorable effect.

The invention provides a high-voltage double-pulse superposed power supply for an electrostatic dust collector. The high-voltage double-pulse superposed power supply for the electrostatic dust collector adopts three-phase input, and adopts a series resonant mode through a resonant circuit to realize zero current shutdowns; and the highest output pulse frequency is designed to be 40KHZ. The high-voltage double-pulse superposed power supply for the electrostatic dust collector effectively solves the problem of insufficient power of the high-frequency pulse power supply in the prior art, and hasthe advantages of the high-frequency pulse power supply of three-phase balance, small ripple factor, high flashover voltage and constant current characteristics; the generation of anti-corona can be avoided for high specific resistance dust; and meanwhile, the double pulse is superposed, therefore, the ultra-fine dust collection is improved, and the dust removal efficiency and power application range are improved.

The invention discloses a water injection type multi-module push plate wave maker, belongs to the technical field of experimental equipment of ocean geotechnical engineering, and aims at solving the problems that a wave maker is in sufficient in power, long in wave making period, narrow in amplitude and easy to generate clutters. The wave maker is composed of a water tank, servo motors, a wave making plate, a water injection pipe, a filtering net and a wave making film; the water tank, the filtering net and the wave making film form an enclosed water area; the servo motors drive a structural support and the wave making plate to make reciprocating motion via a driving rod so as to form initial waves; the wave making plate composed of eight modules, and the modules are driven by different servo motors to make waves in different frequencies; the water injection pipe is controlled by a computer, and water whose amount is calculated in advance is injected along the wave making plate; the filtering net turns waves which are spread in the inclined direction under effect of a flow deflector; and the wave making film is supported by a steel skeleton which moves along a track, and used to merge waves and eliminate clutters. The wave making precision is improved, and the engineering practicality is high.

The invention relates to fitness equipment, in particular to a fitness power generation elliptical machine capable of utilizing physical ability consumed during human fitness to generate power. By mounting a specially designed small-sized generator capable of starting generating power at low speed on the conventional fitness elliptical machine, the elliptical machine converts partial energy consumed during human movement into electric energy and stores the energy to provide power supply. The fitness power generation elliptical machine comprises a bracket, pedals, a support bar, a driving wheel, the generator, a driven wheel, and a driving belt, wherein the driving belt is connected between the driving wheel and the driven wheel; the driven wheel is connected with a crankshaft of the generator through a bearing; when people stamp the pedals to move, the support bar connected with the pedals drives the driving wheel to rotate, and drives the driven wheel through the driving belt and then the crankshaft of the generator to rotate; and the hands and upper arms can simultaneously push and pull swing arms connected with the support bar to drive the driving wheel to rotate. The elliptical machine is characterized in that the initial voltage of the generator is between zero and 30 volts.

This invention relates to a cage electromagnetic buffer having the generation function and charging to levels at the same time including a rotor and a stator, in which, the stator includes a coil and an attached winding set on the core of silicon steel plates and the AC current generated by the winding is output to appliances and batteries via commutation circuit, thus, the electric energy produced by the attached winding can compensate energy cost when the buffer works and ensure the normal work of other appliances to get the best braking result.

The present invention provides a signal connection system of a network switch support plate and a sandwich panel, which includes a carrier board, a sandwich board, a first connector and a second connector, wherein the carrier board is connected with the sandwich board by a first connector and a second connector; the carrier board defines four 3.3V power supply pins and eight 5V power supply pins; the size of sandwich board is 150mm*100mm; the first connector and the second connector are identical in structure. The signal connection system of the network switch support plate and the sandwich panel overcomes the defect that the sandwich plate between the XMC sandwich board cannot meet the cooling requirements, solves the problem that the single-width XMC sandwich board power is lacking, and also solves the problem that the single-width XMC sandwich board area is too small and the devices cannot be placed.

The invention belongs to the field of automobile steering systems, and particularly relates to a composite power supply EPS multi-mode switching method and device based on a dynamic switching threshold. The composite power supply EPS multi-mode switching method comprises the steps that a fluctuation range of electrical load power of a whole vehicle is obtained statistically, and a variation rangeof critical speed and critical rotation angle is obtained; the real-time power of the electric load of the whole vehicle and the SOC of supercapacitor is taken as the input of a fuzzy controller, thecritical speed and the critical rotation angle are taken as the output of the fuzzy controller, and the fuzzy controller is used for realizing the dynamic adjustment of the multi-mode switching threshold, namely, the critical speed and the critical rotation angle; a working mode of the composite power supply EPS system is determined and the corresponding mode switching is carried out to promote the work of a circulating ball steering gear; and the dynamic adjustment process is designed based on the composite power supply EPS multi-mode switching method based on the dynamic switching threshold,the multi-mode switching threshold, namely, critical speed vs and critical rotation angle theta <HS> can be adjusted dynamically in real time to enable the vehicle current to flow efficiently, the intermediate process of energy conversion is reduced, and the energy utilization rate of the whole vehicle is improved.

The invention relates to a solar lamp which comprises a lamp cover, wherein an LED (light emitting tube) luminous tube is arranged in the lamp cover; and a solar cell panel is arranged on the surface of the lamp cover. According to the invention, the solar power generation replaces the traditional power supply mode of street lamps, and the problems of insufficient electric energy as well as waste caused by great investment in street lamps currently are solved, thus the solar lamp is very practical.

The invention discloses a motor encoder power supply method and system taking power from a neutral point of the output end of a frequency converter and belongs to the field of alternating current motors and drive control. The method comprises steps of improving a common-mode voltage waveform at a neutral point of a motor stator winding through a zero-free vector pulse width modulation method so that a common-mode voltage is converted into two levels from four levels; rectifying the suppressed common-mode voltage, and converting the two-level common-mode voltage into a direct-current voltage; and carrying out voltage conversion on the rectified direct current voltage, converting the direct current voltage into a voltage level required by encoder power supply, and then supplying power to theencoder. According to the method, a direct-current weak-current power supply cable led out for supplying power to the encoder is omitted so that the electrical connection between the motor and the frequency converter is simpler, and a problem of encoder power supply cable winding of motors such as industrial robots and the like in application occasions of multi-degree-of-freedom spatial motion isavoided, operation flexibility of the equipment is improved, meanwhile, a stable power supply can be provided for the encoder under different operation conditions of the motor.

The invention provides a wind-control window sensing system. The wind-control window sensing system is characterized by comprising a base and a window frame; the top of the base is tightly connected to the bottom of the window frame; pushing supports are arranged at the edges of the left side and the right side of the connecting position of the base and the window frame; a first cavity is formed in the base; an information processor, a control center, power supply boxes and air extractors are arranged in the first cavity; a second cavity is formed in the window frame; wind detectors and a windshield wiper are arranged in the second cavity; the windshield wiper is connected to the window frame through a telescopic device; an indicating lamp is arranged at the upper end of the window frame;and a water storage tank is formed in the position, at the bottom of the window frame, of the second cavity and can be drawn outwards. According to the wind-control window sensing system, when peoplecannot close a window in time in the stormy weather, the window can be automatically closed, and therefore the stormy weather can be sensed in time, and the window can be closed effectively in time.

The invention discloses a rack locomotive and a horizontal rack locomotive driving device. The horizontal rack locomotive comprises a rack rail and two power transmission devices, teeth are formed in the two sidewalls of the rack rail, each power transmission device drives a transverse third gear to rotate, and the two third gears engage with the corresponding teeth in the two sidewalls of the rack rail so as to drive the rack locomotive. The rack locomotive and the horizontal rack locomotive have the advantages that the problem of limited climbing ability of a vertical rack locomotive is solved, and applicability of the rack locomotive in engineering is increased.

The invention discloses a local power supply dual-network distributed control system which comprises a power storage part and an adjusting and controlling part. The power storage part comprises a hydropower station, a plurality of additional power supply networks and a plurality of photovoltaic power generating stations. The adjusting and controlling part comprises a plurality of control units, the control units belongs to different user terminals, the control units correspond to the photovoltaic power generating stations in a one-to-one mode, the additional power supply networks are connected with the hydropower station, and power is supplied to the additional power supply networks through the hydropower station. A dual-network power supply system is formed by a mains supply network and the additional power supply networks, when power is normally used, the user terminals are connected into the mains supply network to carry out power supply, the control units control the photovoltaic power generating stations to be connected with the hydropower station, and pumped storage is carried out through the power of the photovoltaic power generating stations. In the peak demand period, the hydropower station generates the power through water level altitude differences of an energy storage reservoir, and the user terminals are switched into the additional power supply networks to carry out power supply. According to the local power supply dual-network distributed control system, the problem that the power is insufficient in the peak demand period is solved, and implementing guarantees are provided for the distribution operation and unified management modes of the solar power generation grid connection application of large-scale user groups.

An electromechanical tracking power supply device comprises a mobile power supply vehicle and an electric machinery; a power supply and an output power conversion device are arranged in the mobile power supply vehicle; an input power conversion device, a battery and a motor are arranged in the electric machinery; a telescopic manipulator is arranged at the front part of the mobile power supply vehicle; a power supply connector is arranged at the front end of the telescopic manipulator; a power receiving connector is arranged at the tail part of the electric machinery; and the telescopic manipulator is operated to connect the power supply connector with the power receiving connector so that electric energy in the mobile power supply vehicle can be transmitted to the electric machinery. The invention provides a novel scheme which can give full play to an unconnected type power transmission technology and can solve problems of lack of power in road machinery and non-road machinery during moving; and by controlling the manipulator, the electromechanical tracking power supply device can also keep stable power transmission in an electromechanical moving state.

The invention discloses a method for transferring power grid loads under time-of-use electricity price based on multiple intelligent bodies. The method comprises the following steps that (1) a power grid load transfer target is set; (2) power consumers are classified, so that the different consumer intelligent bodies are formed; (3) a power grid enterprise intelligent body is set and an electricity price adjustment scheme of the power grid enterprise intelligent body is established; (4) the time-of-use electricity price is set and adjusted by the power grid enterprise intelligent body, electricity price information is released to each power consumer intelligent body, and power consumer load information is received; (5) the electricity price information and load adjustment information of other consumer intelligent bodies are received by each consumer intelligent body, the load of each consumer intelligent body is adjusted, and load information of each consumer intelligent body is transmitted to the power grid enterprise intelligent body; (6) the latest two steps are repeated until the transfer target is completed. According to the method, the power consumers are modeled, so that the consumer intelligent bodies of different types are formed, the uncertainty of the consumer responses and the dynamic change of power utilization characteristics are considered, the time-of-use electricity price is used pertinently to transfer the loads, the power supply efficiency is improved, and the power use mode is optimized.

The invention relates to the technical field of independent power grid control, in particular to a safety and stability control method applied to an independent power grid. In order to solve the problems existing in operation, namely control, of an enterprise independent power grid in the prior art, the characteristics of an electrolytic aluminum rectification system in the enterprise independentpower grid are utilized, and the principle that different alternating-current power sources operate in parallel on the direct-current side through the rectification system is utilized, so that an alternating-current different-grid and direct-current parallel electrolytic aluminum power supply mode is achieved. In the mode, a control mode of load transfer and load removal under the condition that apower supply fault occurs in the independent power grid is formulated to keep the stability of the power grid, thereby avoiding the risk of full stop of an electrolytic aluminum enterprise and reducing the loss of the electrolytic aluminum enterprise. A rotatable electrolytic aluminum load is formulated according to the accident reserve capacity of a public network power supply, so that the public network plays a load supporting role, the loss load is reduced, the electrolytic aluminum production is ensured not to be fully stopped, the most basic residual load is ensured to ensure the heat preservation security load of an electrolytic cell, and the quick recovery of an independent power grid is facilitated.