40results about How to "Reduce no-load" patented technology

The invention discloses a switching power supply for an AC/DC-DC self-adaptive instrument within an ultra-wide voltage input range. The switching power supply comprises an input protective circuit, an EMI filter circuit, a power frequency rectification and filter circuit, a high frequency rectification and filter circuit, a boosting conversion circuit, a flyback conversion circuit, a first voltage sampling circuit, a first current sampling circuit, a second voltage sampling circuit, a second current sampling circuit, a first PWM circuit, a second PWM circuit, an auxiliary power supply circuit, a power switching circuit, a voltage detection and comparison control circuit and an optocoupler isolation feedback circuit. A two-stage type cascade circuit is formed by the boosting conversion circuit and the flyback conversion circuit, and the automatic instrument can automatically adapt to power supply of an 85-265V alternating-current power supply and an 18-100V direct-current power supply.

The invention discloses an energy complementation self power supply system, which comprises a solar energy power generation device, a wind energy power generation device, a methanol-water reforming hydrogen production power generation module, an AC DC power conversion device, an electrolytic hydrogen production device, a first methanol synthesis device, a methanol-water storage and conveying device and a load, wherein the solar energy power generation device and the wind energy power generation device provide power for the load and the electrolytic hydrogen production device; the electrolytic hydrogen production device is used for electrolyzing water for hydrogen production, the produced hydrogen is fed to the first methanol synthesis device for synthesizing methanol, in the condition of not sufficient solar energy and wind energy, the synthesized methanol is conveyed to the methanol-water reforming hydrogen production power generation module for hydrogen production and power generation, and power is provided for the load; and the methanol-water reforming hydrogen production power generation module comprises a reformer and a fuel cell, methanol and water are subjected to a reforming hydrogen production reaction in the reformer, the produced hydrogen is fed to the fuel cell, and in the fuel cell, the hydrogen and oxygen in the air are subjected to an electrochemical reaction, and power output is generated. Multiple energies generate power in a complementary mode, power supply continuity is good, and control is easy.

An oil-electric combined charge long-distance all-electric ship with storage battery is disclosed, a pilothouse of a ship body is inside provided with a console, an electric propulsion device is arranged at stern, a battery pack is mounted at the bottom of the ship body, and the ship body is also provided with a thermoelectric generating set that is connected with a distribution board having a rectifier. By mounting the battery pack and the thermoelectric generating set on the ship, the invention can utilize two energies including shore power and high energy fuel, and can sufficiently utilize clean energy at locations where the shore power is present, in order to reduce smoke dust, noise, odor and oil/water pollution and to improve working environment on the ship. The invention regards the high energy fuel and the shore power as a composite energy to achieve energy balance, forms a ship electric station with the storage battery centered in a charging way in order to realize full-power propelling, and integrates the advantages of storage battery electric ship and traditional internal combustion engine ship with a view to double index of environment protection and energy conservation as well as endurance. The invention has the characteristics of accuracy control, high endurance, environment protection, energy conservation, and simple and convenient management and operation, and is the electric ship similar to oil-electric hybrid electric vehicle.

The invention discloses a transformer with a grade-insulation structure, and the transformer comprise a low-voltage coil, a high-voltage coil, a shielding electrode, a grade-insulation structure and an iron core, wherein the low-voltage coil and the high-voltage coil are respectively arranged at the inner side and outer side of the grade-insulation structure, the iron core arranged at the inner side of the low-voltage coil is provided with a radiating folding screen, and a shield is arranged at the outlet electrode of the high-voltage coil to form the shielding electrode; and the grade-insulation structure comprises a first insulation layer, a second insulation layer, a third insulation layer, an angle ring, a fourth insulation layer, a fifth insulation layer and a sixth insulation layer which are arranged from inside to outside, and the angle ring stretches out of the low-voltage coil and the high-voltage coil. The transformer with the grade-insulation structure has the advantages that the material cost and energy consumption of the transformer are greatly reduced, the reliability of the product is improved, and the service life is prolonged.

The embodiment of the invention provides a front-haul transport network (FTN) and a data transmission method. The FTN comprises an access-type front-haul transport node FTN-ACC for connection with a remote radio unit (RRU), an aggregation-type front-haul transport node FTN-AGG having one other end connected with FTN-ACC and the other end connected with a base band unit pool (BBUs). At least two transmission channels with different transmission delays are established between the FTN-ACC and the FTN-AGG. The FTN-ACC and/or the FTN-AGG are/is specifically used for selecting a corresponding transmission channel for transmission according to a data delay requirement. In the invention, the FTN is divided into the FTN-ACC and the FTN-AGG and a plurality of transmission channels are provided. The corresponding channel transmission can be selected for transmission according to the data transmission delay. On the one hand, the transmission delay of different data can be satisfied. On the other hand, the non load of the transmission resources can be reduced as much as possible to enhance the effective utilization of the transmission resources.

The invention discloses a peak shaving and load shifting power supply system based on a methanol water reforming hydrogen generation power generation system. The system comprises a control device, a methanol water storage and transmission device, at least two methanol water reforming hydrogen generation power generation modules, a power conversion device, a load and an electronic switch, wherein the control device is electrically connected with the methanol water storage and transmission device, the methanol water reforming hydrogen generation power generation modules, the power conversion device and the electronic switch and controls the working conditions of the methanol water storage and transmission device, the methanol water reforming hydrogen generation power generation modules, the power conversion device and the electronic switch, and the electronic switch is used for connecting or disconnecting a mains supply; when the mains supply is in a power utilization peak, the control device controls the electronic switch to cut off the mains supply and controls an appropriate amount of methanol water to be reformed to generate hydrogen and the power generation modules to run according to the electricity utilization power of the load so as to supply power to the load; and when the mains supply is in a power utilization valley, the control device controls the methanol water to generate hydrogen and the power generation modules to rotate and also controls the electronic switch to connect the mains supply so as to supply power to the load. The system has the advantages of high power supply continuity, peak shaving and load shifting, energy saving, emission reduction and high power supply safety, and is easy to control.

The invention relates to the field of logistics information publishing and transport capacity management application, and particularly discloses a comprehensive publishing platform of transport capacity information. The comprehensive publishing platform comprises a foundation framework unit, a core business unit, an auxiliary business unit, a uniform business interface, a third-party business interface, a client side and a management side, wherein the core business unit, the auxiliary business unit, the uniform business interface, the third-party business interface, the client side and the management side are independently connected with the foundation framework unit; the core business unit comprises vehicle source management, transport capacity management, management of a source of goods, member management and authentication management; the auxiliary business unit comprises a customer service center, a monitoring center and a statement center; the uniform business interface comprises a mail channel and a short message channel; the third-party business interface comprises a payment side accessed with an external gateway; the client side comprises a self-service server side, a mobile phone application side and a WeChat service side; and the management side comprises a system management maintenance side and a business management side. The comprehensive publishing platform makes vehicle source information and the information of source of goods symmetrical, effectively lowers a no load ratio and improves a transport capacity use ratio.

The invention relates to the technical field of a power equipment transformer, in particular to a sealed amorphous alloy power transformer. An iron core of the transformer is made of amorphous alloy materials, and the basic elements of amorphous alloy comprise ferrum, nickel, cobalt, boron and carbon. The materials are adopted, therefore the no-load and load loss of the transformer is reduced, and the transformer has the characteristics of safety, reliability, environmental protection, energy conservation and the like. In addition, the sealed amorphous alloy power transformer also has the advantages of inflaming retardance, self extinguishment, moisture prevention, crack resistance, no maintenance and the like, can be widely used for high-rise buildings, commercial centers, metros, airports, stations, industrial and mining enterprises and power plants, and is specially suitable for places with high requirements on fire protection such as inflaming, explosion and the like to install and use.

The invention discloses a freight carrier load matching system based on Beidou satellite positioning and communication. According to the technical scheme, the system mainly comprises a vehicle owner vehicle-mounted terminal, a Beidou communication module, a management platform and a cargo supplying party terminal, wherein the vehicle owner vehicle-mounted terminal mainly comprises a Beidou navigation and positioning module and a vehicle-mounted communication module; the Beidou communication module communicates with the vehicle owner vehicle-mounted terminal and the management platform in a bidirectional mode; the management platform is provided with a communication server, a vehicle information management system and a management matching control center; the vehicle information management system communicates with the communication server and the management matching control center in a bidirectional mode; and the cargo supplying party terminal communicates with the communication server in the management platform in a bidirectional mode. The system is mainly applied to the field of transportation.

The invention discloses an on-load capacity-regulating voltage-regulating transformer comprising an oil tank, an iron core, an on-load capacity-regulating voltage-regulating switch and a winding coil;the oil tank is a corrugated oil tank; the iron core is an amorphous alloy iron core; the winding coil is a three-phase three-winding coil which consists of a low-voltage serial-parallel connection layer, a low-voltage serial connection basic layer and a high voltage layer; the low-voltage serial-parallel connection layer, the low-voltage serial connection basic layer and the high voltage layer are sequentially concentrically sleeved on the amorphous alloy iron core; the on-load capacity-regulating voltage-regulating switch is arranged above the amorphous alloy iron core; a high voltage sleeve, a low voltage sleeve and a zero-phase sleeve are arranged on the corrugated oil tank; the high voltage layer is connected with the high voltage sleeve via the on-load capacity-regulating voltage-regulating switch; the low-voltage serial-parallel connection layer and the low-voltage serial connection basic layer are connected with the low voltage sleeve via the on-load capacity-regulating voltage-regulating switch; the low-voltage serial-parallel connection layer is also connected with the zero-phase sleeve; the three-phase three-winding coil, the amorphous alloy iron core and the on-load capacity-regulating voltage-regulating switch are all placed in the corrugated oil tank.

The invention discloses a gear fatigue test device, which relates to the technical field of gear fatigue tests. Thegear fatigue test device comprises a driving device, gearbox sets, a clutch, a data acquisition device and a central processing device. Each gearbox set is in transmission connection with the driving device, each gearbox set comprises a transmission shaft set, a first gearbox and a second gearbox, one end of each transmission shaft set is in transmission connection with the first gearbox, the other end of the transmission shaft set is in detachable transmission connection with the second gearbox, a clutch is arranged between each gearbox set and the driving device, each clutch can independently control on-off of power transmission of the driving device, and each gearbox set is in one-to-one corresponding signal connection with a data acquisition device. The central processing device is in signal connection with each data acquisition device and the driving device, and the central processing device can control the starting and stopping of the driving device; therefore, the problems that a gear fatigue test device in the prior art is low in test efficiency and cannot verify the test accuracy are solved.

The invention relates to the technical field of a transformer of electric equipment, in particular to a low-consumption loss transformer. The low-consumption loss transformer comprises a shell, an oil tank, an iron core and a coil, wherein the iron core and the coil are arranged in the oil tank after being assembled into a device body through device body insulation lines and guide lines, a winding on the iron core is a copper winding, the copper winding is made by of alloy copper, a formula of the alloy copper comprises silver, silicon and nickel, thus the no-load loss and load loss can be obviously reduced, the cost is lowered, and the resource is saved. In addition, the low-consumption loss transformer disclosed by the invention has the characteristics of energy saving, long service life, high operation reliability, small occupied area and the like.

The invention discloses a high-power transmission power cable. The high-power transmission power cable sequentially comprises a combined water passing pipe layer, a fine copper wire harness layer, an isolating layer and a rubber layer from inside to outside, wherein the fine copper wire harness layer is arranged outside the combined water passing pipe layer, the isolating layer is arranged outside the fine copper wire harness layer in winding and coating modes, and the rubber layer is arranged on the outermost layer of the high-power transmission power cable in squeezing and coating modes. Control pairs are further arranged inside the fine copper wire harness layer, and the control pairs are tightly attached to the combined water passing pipe layer. The combined water passing pipe layer is composed of a cooling water pipe and a cold pipe closing layer which is arranged outside the cooling water pipe in a coating mode. The high-power transmission power cable is in the state of external natural cooling and center forced cooling in the working process, the control pairs are tightly attached to the cooling water pipe, insulating strength can be better maintained, thermal ageing is slowed down, and the stress is small when the cable is bent.

The invention relates to a conveyor belt control device comprising a circuit breaker and a contactor which are sequentially connected between a three-phase power supply and a conveyor belt motor. The circuit breaker can switch on or off the three-phase power supply. The contactor can make the conveyor belt motor rotate forwardly or reversely. A reduced-voltage starter capable of regulating the voltage in a stepless manner is connected between the contactor and the conveyor belt motor. According to the conveyor belt control device, the no-load and on-load starting currents are reduced, the impact on other equipment in a power grid is reduced, a conveyor belt is stable and small in impact when being started or stopped, and a dragging system shaft does not bear very large shear force. Through the optimization of the performances, the service life of the conveyor belt system is prolonged.