326 results about "Capacitive energy storage" patented technology

A soft-switched single-phase quasi-single-stage (QSS) bi-directional inverter/charger converts AC-DC or DC-AC. The inverter/charger comprises a push-pull inverter/rectifier on the dc-side, an isolation transformer which provides ohmic isolation and voltage scaling, two full-bridges on the ac side in cascade, a voltage clamp branch comprising a capacitive energy storage element in series with an active switch with its anti-parallel diode, a passive filter at the ac side to smooth out the high frequency switching voltage ripple at the output, and a corresponding PWM scheme to seamlessly control the converter to operate in all four quadrant operation modes in the output voltage and output current plane, and is capable of converting power in both directions.

A power supply (1) is for an electrical load in the form of a Notebook computer (2). Power supply (1) includes first terminals (3, 4) which extend from computer (2) for releasably electrically connecting with a first energy storage device in the form of battery (5) during a first interval. A second energy storage device, in the form a second battery (not shown), releaseably electrically connects with terminals (3, 4) during a second interval spaced apart from the first interval. This allows power to be supplied to the load during those intervals. A capacitive energy storage device, designated generally by reference numeral (6), supplies power to the load during a third interval that spans the spacing between the first and the second intervals.

A safety drive unit (10) with a safety circuit (12) resets a flap or a valve into a specified safety position for controlling a gas or liquid volumetric flow, in particular in the field of heating, ventilation, and air conditioning (HVAC) fire protection and monitoring systems. The safety drive unit (10) essentially comprises an actuator (14) with a controllable electric motor (28), a capacitive energy storage unit (20), an energy converter (22) with a power module, and a power supply (18). During normal operation, the electric current in the power module of the energy converter (22) is converted to a lower voltage and stored in the capacitive energy storage unit (20) with at least one double-layer capacitor. If the voltage drops below a predetermined value or if there is a power failure, the stored electrical charge is converted back to a higher voltage by the same power module, and the electric motor (28) is activated until the specified safety position is reached.

The present disclosure provides an energy storage cell comprising at least one capacitive energy storage device and a DC-voltage conversion device. The capacitive energy storage device comprises at least one meta-capacitor. The output voltage of the capacitive energy storage device is the input voltage of the DC-voltage conversion device. The present disclosure also provides a capacitive energy storage module and a capacitive energy storage system.

The utility model provides a wind farm super capacitor energy storage type unified power quality conditioner which comprises a compensation transformer, a series connection compensator, a parallel connection compensator, a current limiting circuit, a super capacitor group, a bidirectional DC/DC chopper circuit, a signal acquisition conditioning circuit, a control circuit and a driving circuit. The conditioner has two control modes which are a power regulating mode and a low voltage ride through mode. In the power regulating mode, the wind power unit assembly output power quality can be improved, in the low voltage ride through mode, namely in a fault condition, the blower outlet voltage can be maintained and is not reduced, and the current influence on a blower system is avoided until the voltage is recovered and the low voltage ride through is realized. Electric energy generated by the blower in a fault stage can be stored in the super capacitor group, the energy is transmitted to the power grid after a power grid is recovered to a normal state, and the waste of the electric energy is avoided. The conditioner has versatility and can be applied to wind farms of various blower generations of a fixed speed induction generator (FSIG), a permanent magnet synchronous generator (PMSG) and a double-fed induction generator (DFIG).

The invention provides a capacitive energy storage type rechargeable battery and a charging device thereof. The invention comprises a resonance receiving circuit, a rectification circuit, a voltage-reducing and stabilizing circuit and an energy-storage capacitor, wherein the resonance receiving circuit consists of a receiving coil and a resonance capacitor which are sequentially connected with each other in series, the receiving coil is matched with the resonance capacitor to receive electromagnetic energy sent out by a wireless induction transmitting coil in an induction way, and stable 1.6V direct-current voltage is generated by the rectification circuit and the voltage-reducing and stabilizing circuit so as to be used for charging the energy-storage capacitor, wherein the capacity of the energy-storage capacitor is 1-33F. According to the capacitive energy storage type rechargeable battery and the charging device, A, AA or AAA type standard batteries can be replaced by a super-capacitor and a specifically-designed charging mechanism.

The invention discloses a ZIF-67-based synthetic method for constructing a carbon nitride nano tube with super capacitance performance, and belongs to the technical field of super capacitance energy storage material preparation. Under a nitrogen protection condition, ZIF-67 is taken as a template, and high temperature carbonization is carried out on the template, so that the carbon nitride nano tube with good electrochemical activity is constructed. Based on that the carbon nitride nano tube maintains high specific surface area and good skeleton structure of a precursor MOFs, and then the transmission of electrons and the promotion of energy conversion and energy storage performance are facilitated, so that the carbon nitride nano tube has good electrochemical activity.

The invention provides a preparation method of laminated structure cobalt and aluminum double hydroxide-reduction and oxidation graphene composite materials, and belongs to the technical field of composite materials. The method comprises that firstly Co (NO3)2 and AL (NO3)2 are dissolved in water to form mixed solutions; then oxidized graphene is in fully ultrasonic dispersion in the water to form luminous yellow solutions, and the luminous yellow solutions are added to the mixed solutions to be mixed for 20-30 hours; then hexamethylene tetramine is added to a system for backflow of 12-24 hours at the temperature of 100-160 DEG C; and after reaction is completed, the composite materials are gained through filtration, washing and drying. The composite materials prepared through the preparation method simultaneously have an electrical double-layer capacitor of RGO and cobalt and aluminum double hydroxide pseudo-capacitance energy storage characteristics, and thus show high electrochemistry capacitance behaviors, excellent rate capability and good circulatory stability performance, have high energy density and high power density, and can serve as electrode materials of supercapacitors.

A capacitive energy storage module (CESM) is provided under a floor panel of an electric vehicle. The CESM is a pack of capacitive energy storage cells (CESCs) which are themselves one or more capacitive energy storage devices (CESDs) comprising one or more metacapacitors. The CESM is arranged between a pair of right and left side members. The CESM is provided with a CESM case. The CESM case includes a tray member and cover member. Electric components are contained in the CESM case. Beam members made of metal are attached to the tray member. Both end portions of these beam members are supported by the side members. The tray member includes a resin and insert members made of metal provided inside the resin. The insert members include metal plates arranged on the front side and rear side of the electric components.

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 relates to a pulse driving power supply of a high-power semiconductor laser, belonging to the technical field of electronic equipment. The pulse driving power supply structurally comprises a pulse trigger circuit (1), a DC-DC boost circuit (2), a capacitive energy storage circuit (3), a high-speed switching circuit (4) and the like, wherein the capacitive energy storage circuit (3) is formed by connecting a plurality of capacitors in parallel; and the high-speed switching circuit (4) adopts a high-speed MOSFET (Metal Oxide Semiconductor Field Effect Transistor) element as a switching device. According to the pulse driving power supply for driving the semiconductor laser, provided by the invention, the output current is more than or equal to 50 amperes, the output pulse current rise time is more than or equal to 30 nanoseconds, the pulse current width is more than or equal to 15 nanoseconds, and the maximum repetition frequency is 4KHz; favorable edge property of the output current pulse is ensured by adopting the high-speed MOSFET element as the switching device; and the plurality of capacitors are connected in parallel to form an energy storage current to realize output of high current and narrow pulse signals.

A diode driver system includes an input power source and an active line filter receiving input power from the input power source and providing a filter output power form. A current driver receives an input power form and generates a driving output signal for driving at least one diode. A capacitive energy storage device is coupled between the active line filter and the current driver, the capacitive energy storage device receiving the filter output power form from the active line filter and providing the input power form to the current driver.

An elevator drive assembly (20) includes a motor (28), drive (32) and a capacitive energy storage device (50). In a disclosed example, the capacitive energy storage device (50) comprises at least one nano-gate capacitor (52). The disclosed example has unique energy storage capabilities provided by the presence of the at least one nano-gate capacitor.

The invention relates to an explosive detonation property testing system under a pulse high voltage and a tested explosive loading part. The microseond-stage pulse high voltage of the required pulse width is generated by a capacitive energy storage and charging unit and a pulse width control unit, and applied to the tested explosive loading part; then, a tested explosive is ignited by an ignition and explosion propagation unit in time sequence; and finally the high voltage resistance, the time sequence ignition stability, the detonation output property and the like of the tested explosive are measured by utilizing a detonating velocity and detonation voltage testing unit and a high voltage resistant testing unit under the microseond-stage pulse high voltage condition of the required pulse width. The explosive detonation property testing system and the tested explosive loading part are applicable to the explosive detonation property testing under the pulse high voltage, and have the characteristics of low cost, simple structure, adjustable pulse width and the like.

The invention relates to a microgrid hybrid energy storage system and a control method thereof. The system comprises a power grid, wherein the power grid is connected with a microgrid common ac bus, the microgrid common ac bus is connected with a first subcircuit bus and a second subcircuit bus through microgrid energy management systems respectively, and the microgrid common ac bus is also connected with the first subcircuit bus through a transformer TM4; the microgrid common ac bus is also connected with the first subcircuit bus through a transformer TM5; the first subcircuit bus is connected with a lithium battery energy storage module, a super-capacitor energy storage module and a lead-acid cell energy storage module; the second subcircuit bus is connected with a load module. A microgrid internal energy storage system and loads are predicted, internal energy storage devices and loads are optimized and controlled during grid-connected operation, isolated network operation and state switching of a microgrid according to an energy storage power source and load characteristics, system output is smooth, and then intermittency and volatility of renewable energy sources are effectively inhibited.

A servo press control system comprises a servo press. The servo press comprises a servo motor, a servo controller, a transmission mechanism, a sliding block, a workbench and a grating ruler, wherein the servo controller is in communication connection with a movement controller through a network, and an I/O interface module, an operation panel and a human-machine interface are connected to the movement controller; the input end of the servo controller is connected with a capacitive energy storage device, and the output end of the servo controller is connected with the servo motor; the servo motor is connected with the transmission mechanism; the sliding block is connected with the transmission mechanism; and the human-machine interface is in communication connection with the movement controller. According to the servo press control system, requirements for different technological curves for movement of the sliding block can be met according to different working conditions, and the torque requirement of the sliding block in a certain position is met; and the stroke of the sliding block can be adjusted according to different workpieces, and the sliding block does not need to move to the top dead center every time in all cycles, so that the cycle time is shortened, meaningless stroke is minimized, and productivity is greatly improved.

In one aspect, the present disclosure relates to an improved method of preparing concentrated MnO₂ ink with increased efficiency and cost effectiveness. The method involves mixing KMnO₄ solution with highly crystalline carbon particles (HCCPs) with average diameters less than 800 nm at 30-60° C. for at least 8 hours. The present disclosure further relates to a symmetric supercapacitor device comprising MnO₂ coated electrodes and a solid state ionic liquid as electrolyte, as well as an interdigital transparent SC (IT-SC) device comprising aqueous MnO₂ ink.

The invention relates to a two-way buck-boost DC converter applied to an energy storage system. The DC converter is characterized by being included in the energy storage system and comprising an input capacitor Ci, a filter inductor Lm, a transistor S1, a transistor S2 and an output capacitor C0, wherein the battery positive pole of the energy storage system is connected with the positive pole of the input capacitor Ci and one end of the filter inductor Lm, the other end of the filter inductor Lm is connected with the common point of the drain of the transistor S1 and the source of the transistor S2, the drain of the transistor S2 is connected with the positive pole of the output capacitor C0 and the input side positive pole of an energy storage grid-connected inverter, and the input side negative pole of the energy storage grid-connected inverter is connected with the negative pole of the output capacitor C0, the source of the transistor S1, the negative pole of the input capacitor Ci and the battery negative pole. The two-way buck-boost DC converter is provided with a power two-way function and a plurality of DC converters with the same model are connected in series for use during high capacity to satisfy the requirement of various grid systems for the power.

A transportation system and a method are provided for backing up the operational state of a transportation system. The transportation system includes a control apparatus for controlling the operation of the transportation system. The control apparatus further includes capacitive energy storage and a power supply backup circuit adapted to maintain power supply from the said energy storage to a storage circuit for a given length of time in connection with an operational anomaly in power supply to the control apparatus.

The invention relates to a UPQC (unified power quality conditioner) based on an SCR (silicon controlled rectifier) and energy storage, and belongs to the power equipment technology field. The UPQC based on the SCR and the energy storage comprises super capacitive energy storage modules, bidirectional direct current-direct current converter modules, inverter modules and bidirectional SCR modules, wherein the super capacitive energy storage modules are connected with low voltage sides of the bidirectional direct current-direct current converter modules in parallel, high voltage sides of the bidirectional direct current-direct current converter modules are connected with direct current sides of the inverter modules in parallel, alternating current output ends of the inverter modules are connected in parallel between output ends of the bidirectional SCR modules and a load, and input ends of the bidirectional SCR modules are connected with a system power source. The UPQC based on the SCR and the energy storage enlarges a range for solving power energy quality problems, and simultaneously is further integrated, and effectively reduces cost. Furthermore, the UPQC based on the SCR and the energy storage not only has the advantages of being high in response speed, high in standby efficiency and stable in work, but also is simple in structure, convenient to maintain, easy to operate and high in cost performance, and effectively saves production cost.

The invention relates to a self electricity generation wireless pulling force sensor. The self electricity generation wireless pulling force sensor comprises a force measuring circuit, a single chip processing circuit and a wireless communication circuit which are connected in series. The self electricity generation wireless pulling force sensor also comprises a pipe tube, magnetic steel and a resonance spring are arranged inside the pipe body, the resonance spring is connected at the bottom of the pipe body, the magnetic steel is arranged on the resonance spring, a coil is wound outside the pipe body, a rectifying circuit is connected with the coil and is connected with a capacitor energy storage voltage stabilizing circuit, and the capacitor energy storage voltage stabilizing circuit is respectively connected with the force measuring circuit, the single chip processing circuit and the wireless communication circuit for supplying the electricity. The invention uses the characteristic that the pulling force sensor moves up and down along a steel rope, the magnetic steel in the pipe body vibrates under the effect of the resonance spring, the coil cuts magnetic induction lines to generate electrodynamic potential, the work voltage is obtained after processing, and the self electricity generation is realized. At the same time, pulling force data is transmitted to a data receiving device nearby in a wireless transmission mode. The invention effectively solves the problem of easy abrasion of connecting wires of the existing pulling force sensor and the power supply problem of a wireless data transmission circuit.