201results about How to "Improve energy storage capacity" patented technology

The invention discloses a novel flywheel energy storage device which is characterized in that a rotary shaft is arranged in the internal center of a vacuum container; a permanent magnetic radial bearing is embedded in the upper part of the rotary shaft; the middle and lower part of the rotary shaft are sleeved by a flywheel, a single-winding outer rotor magnetic suspension switch reluctance motor and radial and axial permanent magnet biased magnetic bearings in sequence from top to bottom; the single-winding outer rotor magnetic suspension switch reluctance motor is embedded in the inner side of the lower end of the flywheel; each set of windings is independently controlled, and radial two-degree-of-freedom suspension force can be provided in addition to electrical / power generation functions. According to the novel flywheel energy storage device, by utilizing the characteristic that the single-winding outer rotor magnetic suspension switch reluctance motor can directly drive the flywheel, and a high-speed self-suspension function, and organically combining the characteristics of good unloading property and controllable suspension of the axial permanent magnet bearing, the radial permanent magnet bearing and a hybrid magnetic bearing, the five-degree-of-freedom, low-loss and high-reliability suspension of the flywheel are realized, the running speed of the flywheel is increased, and the power consumption and volume of a system are reduced.

The invention provides a three-phase energy storage method of a solar air conditioner, and belongs to the field of solar air conditioners. An absorbing type refrigerating working pair serves as an energy storage medium, a three-phase energy storage device is connected with a generator in a solar absorbing type refrigerating system in parallel, a solar heat collecting medium provides heat for the three-phase energy storage device and the generator, surplus solar collected heat is stored in the three-phase storage device in an energy storage medium chemical potential energy mode by adjusting the flow of the heating collecting medium entering the three-phase energy storage device in real time, and good matching of a drive heat source and an air conditioner load is achieved. The three-phase energy storage method avoids the dangers brought by crystallization during serial connection of a two-phase energy storage device and a generator in the prior art, the load adjusting function of the solar air conditioner can be achieved through an energy storage system by means of gas-liquid-solid three-phase high energy storage density, and the crystallization rate of 50% enables the size of the energy storage device to be reduced by more than a half than the size of an energy storage device in a two-phase energy storage mode. The system is simple, adjustment is convenient and flexible, the amount of released cold is stable, and a common solar air conditioning system can be easily improved into an energy storage air conditioning system.

A bulk amorphous metal inductive device comprises a magnetic core having at least one low-loss bulk ferromagnetic amorphous metal magnetic component forming a magnetic circuit having an air gap therein. The component comprises a plurality of similarly shaped layers of amorphous metal strips bonded together to form a polyhederally shaped part. The device has one or more electrical windings and is easily customized for specialized magnetic applications, e.g. for use as a transformer or inductor in power conditioning electronic circuitry employing switch-mode circuit topologies and switching frequencies ranging from 1 kHz to 200 kHz or more. The low core losses of the device, e.g. a loss of at most about 12 W / kg when excited at a frequency of 5 kHz to a peak induction level of 0.3 T, make it especially useful at frequencies of 1 kHz or more.

The invention discloses a flywheel energy storage device adopting a bearingless switched reluctance motor. A permanent magnetic unloading bearing, a bearingless switched reluctance motor, a flywheel rotor and a mixed magnetic bearing are sequentially sleeved between the upper end and the lower end of a flywheel rotating shaft, wherein the permanent magnetic unloading flywheel carries the axial weight of the flywheel rotating shaft; the mixed magnetic bearing on the lower end overcomes the residual weight and the dynamic load of the flywheel rotating shaft, so that the flywheel rotating shaft is guaranteed to be stably suspended in the axial direction, simultaneously two-degree-of-freedom suspension bearing in the radial direction is provided for the flywheel rotating shaft, and the other two-degree-of-freedom suspension and electric function / power generation function in the axial direction are completed by the bearingless switched reluctance motor; and by adopting the high-speed electromotion / power generation running advantage and the self-suspension function of the bearingless switched reluctance motor, the strong unloading characteristic and the controllable suspension characteristic of the permanent magnetic unloading bearing and the mixed magnetic bearing are reasonably combined, so that the five-degree-of-freedom suspension of a flywheel with low loss and high reliability is realized, the running speed of the flywheel is improved, and the system power consumption and the size are reduced.

The invention discloses a flywheel energy storing device. The device includes a vacuum container arranged on the outer layer. A rotary shaft is arranged in the center of the vacuum container. A radial-axial permanent magnetic bearing is nested in the upper end of the rotary shaft. The lower end of the rotary shaft is sleeved with a flywheel, a single-winding outer rotor magnetic suspension switch reluctance motor, and a permanent magnetic bias radial-axial magnetic bearing successively from top down. The rotary shaft penetrates through the center of the flywheel and is connected with the flywheel. The flywheel is nested in an outer rotor of the single-winding outer rotor magnetic suspension switch reluctance motor. According to the invention, by combining that the single-winding outer rotor magnetic suspension switch reluctance motor can drive the flywheel directly and has a high-speed suspension function with that the radial-axial magnetic bearing and a hybrid magnetic shaft have characteristics of controllable suspension in forced uninstallation, five degree of freedom and high-reliability suspension of the flywheel are realized. Besides, operation speed of the flywheel is increased and system power consumption and size are reduced.

The invention discloses a balance control method of a lithium-ion battery set. Internal parameters of each single battery of the battery set and an accurately estimated SOC value serve as the reference quantity of a battery set balance control algorithm; the safety problem possibly caused by overcharging and overdischarging of the battery set is resolved through the balance control scheme, the service life of the battery set is prolonged, and the performance of the battery set is improved. Through the balance control method of the lithium-ion battery set, balance control can be carried out on the work state and performance of the lithium-ion battery set, an active balance control method based on the SOC estimation value is built, and the intelligent balance control method of the lithium-ion battery set is designed through the electronic technique and the computer control technology. The implementation of the balance control method of the lithium-ion battery set has great significance for promoting the popularization of lithium-ion batteries, improving the energy storage capacity and the utilization rate of the lithium-ion battery set, and prolonging the cycle life of the lithium-ion battery set, overcomes the defects of a lithium-ion battery set balance control system, and promotes the application and popularization of the new energy electric car technology based on lithium-ion batteries.

The invention belongs to the technical field of transitional metal sulfide-carbon materials, and particularly relates to a tungsten disulfide / carbon nanofiber / graphene composite material and a preparation method thereof. The preparation method comprises the following steps: preparing a polyacrylonitrile nanofiber membrane in an electrostatic spinning manner; wrapping a polyacrylonitrile nanofiber with a graphene oxide through a solution immersion method; preparing a carbon nanofiber / graphene composite membrane through a high-temperature carbonization; and finally growing a tungsten disulfide nanosheet on the carbon nanofiber / graphene in situ through a one-step solvothermal method. The prepared tungsten disulfide / carbon nanofiber / graphene composite material has the advantages of stable chemical property, good conductivity, excellent mechanical property and the like, and can be used as an ideal high-performance electric catalytic material and an electrode material for new energy devices of a lithium-ion battery, a solar battery and the like.

A bulk amorphous metal inductive device includes a magnetic core having at least one low-loss bulk ferromagnetic amorphous metal magnetic component forming a magnetic circuit having an air therein. The component has a plurality of similarly shaped layers of amorphous metal strips bonded together to form a polyhedrally shaped part. The device has one or more electrical windings and is easily customized for specialized magnetic applications, e.g. for use as a transformer or inductor in power conditioning electronic circuitry employing switch-mode circuit topologies and switching frequencies ranging from 1 kHz to 200 kHz or more. The low core losses of the device, e.g. a loss of at most about 12 W / kg when excited at a frequency of 5 kHz to a peak induction level of 0.3 T, make it especially useful at frequencies of 1 kHz or more.

The invention belongs to the field of electrochemical materials, and discloses a graphene / carbon black composite material, a preparation method and an application thereof. The electrode material comprises, by mass, 50-90% of graphene and 10-50% of carbon black. According to the graphene / carbon black composite material, agglomeration of the graphene lamellas is low, such that the high energy storage capacity is provided when the composite material is adopted as the electrochemical capacitor electrode material.

The invention discloses a flywheel battery supported and driven by a split magnetic levitation switch reluctance motor. The flywheel battery comprises an enclosure and a vacuum cavity, wherein an axial permanent magnet bearing, two radial permanent magnet bearings, a motor A, a flywheel rotation shaft, a flywheel rotor, a motor B and an axial electromagnetic bearing are contained in the vacuum cavity; the flywheel rotor is fixedly sleeved at the axial center of the flywheel rotation shaft; the axial permanent magnet bearing and the axial electromagnetic bearing are arranged at the upper and lower ends of the flywheel rotation shaft respectively; the two radial permanent magnet bearings are located below the axial permanent magnet bearing and above the axial electromagnetic bearing respectively; the motor A and the motor B are arranged between the two radial permanent magnet bearings and the flywheel rotor respectively; a torque winding of the motor A and a torque winding of the motor B are connected in series, and the levitation windings are independently wound; the axial electromagnetic bearing provides controllable levitation with axial degree of freedom; the levitation winding is excited to generate radial levitation force; and the radial levitation force and the radial restoring force of the radial permanent magnet bearing provide controllable levitation with more than 4 radial degrees of freedom, thereby improving the energy storing efficiency.

The invention belongs to the field of electrochemical materials, and discloses a graphene / carbon nano-tube composite material, a preparation method and an application thereof. The electrode material comprises, by mass, 50-90% of graphene and 10-50% of carbon nano-tubes. According to the graphene / carbon nano-tube composite material, agglomeration of the graphene lamellas is low, such that the high energy storage capacity is provided when the composite material is adopted as the electrochemical capacitor electrode material.

A capacitor based energy storage system (CBESS) and methods of using it are disclosed. The CBESS uses meta-capacitors in its capacitive energy storage devices (CESD) to configure capacitive energy storage cells (CESC), which are used to configure capacitive energy storage modules (CESM) to achieve the CBESS's function as an uninterruptible power supply. The CBESS is connected to a power generation system (PGS), a load, and a power grid. When the grid is in an abnormal state, the CESM is simultaneously charged with power from the PGS and used to supply power to the load. If a remaining amount of power of a CESM is less than a predetermined level, the CESM is charged with power from PGS or grid. The CBESS interfaces with a computer system or network to buy or sell electricity to the grid depending on grid electricity cost and CESD charging states.

The invention belongs to the technical field of transition metal sulfide-carbon materials, and particularly discloses a tungsten disulfide / graphene nanobelt composite material and a preparation method thereof. A graphene nanobelt disclosed by the invention is prepared through solution oxidation, and the tungsten disulfide / graphene nanobelt composite material is formed by tungsten disulfide nanosheets in an in-situ growth manner on the graphene nanobelt through a one-step solvothermal method. The graphene nanobelt prepared by the invention has the advantages of stable chemical property, high conductivity and the like; and the composite material prepared by the invention has the characteristic of morphology controllability, and the tungsten disulfide nanosheets are uniformly loaded on the graphene nanobelt, so that the adhesion of tungsten disulfide is effectively inhibited, and unique high specific surface area and high conductivity of the graphene nanobelt are fully utilized. The tungsten disulfide / graphene nanobelt composite material prepared by the invention can become an ideal high-performance electrocatalytic material and an electrode material of new energy devices such as lithium ion batteries and solar cells.

The invention discloses a power generation control method for an engine and a driving motor of a hybrid power bus. The power generation control method for the engine and the driving motor of the hybrid power bus comprises the following steps that the current speed and required traction torque of the bus are obtained; the required traction torque is determined to be within the range of the economical torque of the engine, and the difference value between the required traction torque and the economical torque of the engine is set to be the target value of the brake torque of the driving motor; the target value of the brake torque of the driving motor is adjusted, so that the absolute value of the brake toque of the motor is made to be larger than the minimum power generation torque of the motor and smaller than the maximum power generation torque of the motor; in the constrained time, the brake torque of the driving motor is changed to the numerical value of the brake torque of the motor from zero according to the quantization step, and the absolute value of the brake torque of the driving motor is set not to exceed the maximum torque which is allowed to be output at the current rotating speed of the driving motor; and the sum of the economical torque of the engine and the brake torque of the driving motor is used as the target torque of the engine.

The invention belongs to the technical field of energy storage devices and particularly relates to a high-safety flexible linear lithium ion battery and a preparation method thereof. The preparation method comprises the following steps: winding lithium manganate nano grains and an irregular multi-wall carbon nano tube mixture into an orientated multi-wall carbon nano tube thin film to obtain a positive electrode composite fiber; meanwhile, winding lithium titanate nano grains into the other same orientated multi-wall carbon nano tube thin film to form a fiber; wrapping the surface of the fiber with one thin layer of graphene oxide to obtain a negative electrode composite fiber; and finally, packaging the positive electrode composite fiber, the negative electrode composite fiber and electrolyte into a flexible tube to obtain the linear flexible lithium ion battery with high battery performance. According to the battery, an electrode material with the high safety is wound into a carbon nano tube bundle with excellent electric and mechanical properties to form a flexible fiber electrode; a metal wire is replaced so that the flexibility and the safety of a device are greatly improved; meanwhile, the fiber battery is light in mass, small in volume and large in capacity; the flexible fiber electrode is easy to braid and integrate and an important reference method is provided for application of the flexible fiber electrode in wearable equipment.

The invention relates to a household electrical appliance, comprising a flash evaporation type steam generator (12) supplied by a reservoir (11). The steam generator (12) is connected to a steam distribution pipeline. The invention is characterized in that the steam distribution pipeline comprises a pressurized check valve (150) of a distribution pipe (15) connected to a fitting (1) used for fabric treatment; the calibrated pressure of the pressurized check valve (150) makes that only when the pressure of the distribution pipe (15) is higher than or equal to a predetermined threshold value, the steam can flow through along the direction of the fitting (1) used for fabric treatment; The fitting used for fabric treatment comprises a switch of manual control which allows to interrupt the diffusion of the steam through the fitting (1) used for fabric treatment based on order.

The invention belongs to the technical field of transition metal sulfide / carbon materials, and particularly discloses a cobalt zinc sulfide / graphene / carbon nanofiber composite material and a preparing method thereof. The preparing method includes the steps that a polyacrylonitrile nanofiber film is prepared through electrostatic spinning, polyacrylonitrile nanofibers are wrapped by graphene oxide with a solution soaking method, then a graphene / carbon nanofiber composite film is prepared through high temperature carbonization, and cobalt zinc sulfide nanometer particles grow on the graphene / carbon nanofibers with a one-step hydrothermal method in an in-situ mode. The prepared cobalt zinc sulfide / graphene / carbon nanofiber composite material is controllable in morphology, has the high specific surface area and the good electrical conductivity, and can serve as an ideal high-performance electro-catalysis material and an electrode material of new energy devices such as a lithium-ion battery and a solar cell.

The invention relates to graphene and a preparation method thereof. The preparation method comprises the following steps: (1) preparing oxidized graphene, and (b) preparing the graphene. The invention also relates to application of the graphene in a lithium ion battery. The graphene prepared by adopting the preparation method disclosed by the invention is processed by plasma. The graphene is more in defects, so that the graphene has high energy storage capacity when being coated on a current collector to use, and the preparation technology is simple. Therefore, large-scale production is easily achieved.

A preparation method of a graphene-carbon nanotube composite thin film comprises the following steps: oxidating graphite to obtain graphite oxide; dispersing the graphite oxide in deionized water, and carrying out ultrasonic treatment for 1 hour to 2 hours to obtain a graphite oxide dispersion liquid with the concentration of 0.5 g / L to 1.0 g / L; dispersing carbon nanotubes in ethanol, and carrying out ultrasonic treatment for 3 hours to 6 hours to obtain a carbon nanotube dispersion liquid with the concentration of 0.2 g / L to 1 g / L; after mixing the graphite oxide dispersion liquid and the carbon nanotube dispersion liquid according to a volume ratio of 1:1 to 1:2, carrying out ultrasonic treatment for 5 hours to 8 hours to obtain a mixed liquid, removing the deionized water and the ethanol, and thus obtaining a graphene oxide-carbon nanotube thin film; and placing the graphene oxide-carbon nanotube thin film in an inert gas atmosphere, heating up to 700 DEG C to 900 DEG C, holding for 0.5 hour to 2 hours, cooling to the room temperature, and thus obtaining the graphene-carbon nanotube composite thin film having higher energy storage performance. The invention also provides a preparing method of an electrochemical capacitor.

The invention belongs to the technical field of transition metal oxide-carbon materials, and specifically provides a zinc cobalt oxide / graphene / carbon nanofiber composite material and a preparation method thereof. The preparation method provided by the invention comprises the following steps: preparing a polyacrylonitrile nanofiber membrane through electrospinning, coating graphene oxide on polyacrylonitrile nanofiber through a solution immersion process, preparing a graphene / carbon nanofiber composite membrane through high-temperature carbonization, and finally subjecting the graphene / carbon nanofiber to one-step hydrothermal process so as to realize in-situ growth of zinc cobalt oxide nanoparticles. The zinc cobalt oxide / graphene / carbon nanofiber composite material prepared by using the method provided by the invention has controllable morphology, high specific surface area and excellent conductivity, can be used as an ideal high-performance electrocatalytic material and an electrode material for new-energy devices like lithium ion batteries and solar cells.

The invention discloses a multi-source compound superconductive micro electrical network system and an energy management method thereof. The multi-source compound superconductive micro electrical network system comprises a public electrical network subsystem, a renewable energy generation subsystem, a DC bus, a liquid hydrogen main pipe, a liquid oxygen main pipe, an electrical energy storage and utilization subsystem, a composite energy source transmission and utilization subsystem, an energy state monitor and an energy management controller, wherein the energy state monitor is used for monitoring electrical energy state information of the DC bus and energy storage state information of the electrical energy storage and utilization subsystem, the energy management controller is used for controlling the electrical energy storage and utilization subsystem for storing excessive electrical energy on the DC bus, excessive liquid hydrogen in the liquid hydrogen main pipe and excessive liquid oxygen in the liquid oxygen main pipe or compensating insufficient electrical energy in the DC bus, insufficient liquid hydrogen in the liquid hydrogen main pipe and insufficient liquid oxygen in the liquid oxygen main pipe. Through the multi-source compound superconductive micro electrical network system, problems of renewable energy generation intermittence and instability are effectively solved, and high-quality electrical energy use can be realized for user terminals.

The invention discloses an electrochromism / energy storage dual-function device and application thereof. According to the electrochromism / energy storage dual-function device, metal zinc is used as a negative electrode, and a prussian blue electrochromic film attached to a conductive substrate is used as a positive electrode; a gap between the positive electrode and the negative electrode is filledwith dual ion electrolyte containing Zn<2+> and K<+>. The electrochromism / energy storage dual-function device has both an electrochromic function and a power storage capacity similar to a battery. Compared with a known scheme, the device has the advantages of being high in output voltage, high in energy density, high in discoloration speed, large in discoloration range, long in cycle life, cheap in raw materials, simple in preparation process, non-toxic and pollution-free and the like.

The invention belongs to the field of electrochemical materials, and discloses a graphene / carbon black composite material, a preparation method and an application thereof. The electrode material comprises, by mass, 50-85% of graphene and 15-50% of carbon black. According to the graphene / carbon black composite material, agglomeration of the graphene lamellas is low, such that the high energy storage capacity is provided when the composite material is adopted as the electrochemical capacitor electrode material.

The invention discloses a solar double effect absorption heat pump system combining three phase energy storage and belongs to the field of solar heat pumps. By taking a lithium bromide aqueous solution as an energy storage medium, a three phase energy storage system and a generator in a conventional solar double effect absorption heat pump system are connected in parallel, a heat collecting mediumin a tank type solar heat collector provides heat to the energy storage tank and a high pressure generator, separately, and on the basis of meeting the heat requirement of users, residual solar heat-collecting capacity is stored in the three phase energy storage system in a form of chemical potential energy, so that the solar energy is utilized efficiently. The system disclosed by the invention avoids risks caused by crystallization in serial connection of a two phase energy storage device and the generator in the prior art, and the load regulating action on a solar air conditioner by the energy storage system can be achieved by means of high energy storage densities of vapor, liquid and solid phases. The size of the energy storage tank is reduced by more than a half compared with that ofthe two phase energy storage mode as a result of a 50% crystallization rate. The system is simple, convenient and flexible to regulate and easy to transform a common solar double effect absorption heat pump system into the energy storage type solar double effect absorption heat pump system.

The invention relates to a composite sealing ring for a low-temperature valve, and belongs to the technical field of fluid control valves. The sealing ring comprises a sealing ring jacket made of modified polytrifluorochloroethylene, a hollow metal energy storage spring with a circular section is clamped in an annular groove with a C-shaped section formed by the section of the sealing ring jacket and comprises a spring strap wound outside a metal rubber ring with the circular section, the ratio of the inner distance between two surrounding edges in a natural state to the diameter of the metal energy storage spring is 0.7-0.9, the ratio of the maximum outer distance formed by unfolding the two surrounding edges after clamping the metal energy storage spring and the length of a base edge to the depth of a sealing groove to be embedded is 1.1-1.3, and metal materials in the metal rubber ring are as same as those of the metal energy storage spring. The sealing ring appropriately solves the problem of serious reduction of sealing specific pressure caused by the expansion coefficient difference between a nonmetal material and a metal material at a low temperature and solves the problem that the materials are hard and brittle at a deep-cold temperature, and reliable sealing of the valve in a -196 DEG C to -269 DEG C ultra-low temperature environment can be practically achieved.

A compact-type liquid dehumidification air conditioner in two-stage parallel connection which is driven by the solar energy comprises a two-stage dehumidification module, a regeneration module, a first evaporation cooling device, a cross flow heat exchanger and a second evaporation cooling device. The two-stage dehumidification module, the cross flow heat exchanger and two evaporation cooling devices constitute the upper layer of the solar compact type of liquid dehumidification air conditioner in two-stage parallel connection; the regeneration module constitutes the lower layer of the liquid dehumidification air conditioner. The modules are connected through the liquid pipeline or the air duct. Compared with the traditional liquid dehumidification air conditioner, the layered design of the air conditioner saves the space greatly; the parallel arrangement of the dehumidification module is convenient for the regulation of the gas and liquid flow ratio of each level; the operation with big concentration difference is in favor of the complete exertion of the liquid dehumidification capability, which realizes the energy storage and saving purpose. Therefore the compact-type liquid dehumidification air conditioner in two-stage parallel connection which is driven by the solar energy improves the deterioration of the dehumidification effect due to the gas liquid mixing heat during the dehumidification process.

The invention discloses a solar energy storage system with coupled photo(electro)chemical cell and fuel cell. The invention provides a novel-concept solar energy storage system with coupled photo(electro)chemical cell and fuel cell. The solar energy storage system comprises a photoelectrochemical cell or a photochemical cell, a hydrogen storage system, an oxygen storage system, and a hydrogen-oxygen fuel cell which are connected by using pipelines. A hydrogen inlet of the hydrogen storage system is connected to a hydrogen outlet of the photoelectrochemical cell or the photochemical cell through a pipeline. An oxygen inlet of the oxygen storage system is connected to an oxygen outlet of the photoelectrochemical cell or the photochemical cell through a pipeline. Gas outlets of the hydrogen storage system and the oxygen storage system are respectively connected to a hydrogen inlet and an oxygen inlet of the hydrogen-oxygen fuel cell through pipelines. A hydrogen outlet and an oxygen outlet of the hydrogen-oxygen fuel cell are respectively connected to a gas-liquid separator. Water vapor are cooled and connected by the gas-liquid separator, and the hydrogen outlet and the oxygen outlet of the hydrogen-oxygen fuel cell are emptied. A water outlet of the gas-liquid separator is connected to a water inlet of the photoelectrochemical cell or the photochemical cell through a pipeline.

The invention relates to a five-degree-of-freedom magnetic levitation flywheel energy storage device. A rotating shaft, a flywheel, a permanent magnet unloading bearing, and a four-degree-of-freedom magnetic levitation support and transmission system are disposed in a vacuum vessel for reducing energy loss caused by wind resistance. The flywheel is installed on the lower end of the rotating shaft and the permanent magnet unloading bearing is fixedly connected with the flywheel and vacuum vessel. The top end of the flywheel energy storage device is provided with the four-degree-of-freedom magnetic levitation support and transmission system. The four-degree-of-freedom magnetic levitation support and transmission system consists of a magnetic levitation switch reluctance motor, a permanent magnet, a magnetic conductive plate and a magnetic bearing. The permanent magnet provides the magnetic levitation switch reluctance motor and the magnetic bearing with bias magnetic fields for generating required suspension force under the effect of the magnetic conductive plate. A redundant coil for generating a biased magnetic axis is eliminated so as to achieve low loss and compact system structure. The magnetic levitation switch reluctance motor uses torque / suspension self-decoupling structure to improve the stability and reliability of the system.

The voltage compensator is composed of following parts: for charging module of superconducting energy storage, charging module is composed of a rectification bridge in three phase, a filter and a electronic switch; connected to DC side of charging module and inversion module in parallel and in use for storing electrical energy in DC form, the module of superconducting energy storage consists of a superconducting coil, a electronic switch, a power diode and a capacitance; in use for outputting offset voltage, the inversion unit includes inversion bridge in three phase; in use for connecting dynamic voltage compensator to power system, the isolation filtering unit includes three pieces of isolating transformer and three capacitors. The disclosed dynamic voltage compensator meets the need for compensating voltage fall off at short time in power system. Comparing with prior art, the disclosed dynamic voltage compensator possesses better dynamic response and longer compensating time.

The invention relates to an evaporative cooling wind power water-pumping energy storage co-generation system which is characterized in that the output end of a wind power generation equipment (1) is connected with the input end of a water pump (2) through a connecting mechanism (10), the water pumping port of the water pump (2) is communicated with a lower reservoir (3) through a water pumping pipe (11), the water outlet of the water pump (2) is communicated with an upper reservoir (4) through a water outlet pipe (12), the water inlet of a water pumping energy storage machine unit (5) is communicated with the upper reservoir (4) through a power generation water conduit (14). The water outlet of the water pumping energy storage machine unit (5) is communicated with the lower reservoir (3) through a draft pipe (13). The wind power generation equipment (1) and the water pumping energy storage machine unit (5) all adopt a stator evaporative cooling method.