44results about How to "Large output capacity" patented technology

The invention discloses an island integrated energy supply and safeguard system. The system includes a small-sized nuclear power generation device which serves as a main power supply of an island micro-grid; a switch station which is intended for connecting the small-sized nuclear power generation device to the micro-grid; a high capacity energy storage system for energy storage and a super capacitor; a distributed regeneration power generation system which serves as an auxiliary power supply of the island micro-grid; a diesel power generation system which serves as an emergency energy source of the island micro-grid; and a micro-grid integrated control management center system; the mall-sized nuclear power generation device, the switch station, the high capacity energy storage system, the distributed regeneration power generation system, the diesel power generation system, and the micro-grid integrated control management center system are connected through power transmission lines or / and micro-grid communication lines. According to the invention, the system can provide integrated energy supply and safeguard.

The invention discloses a flexible ground automatic neutral-section passing system of an electrified railway. The flexible ground automatic neutral-section passing system of the electrified railway comprises a train position recognition subsystem, an electric energy characteristic monitoring subsystem and a power regulation subsystem. The train position recognition subsystem is used for recognizing the position of a train on a railway line and providing the position for the power regulating subsystem. The electric energy characteristic monitoring subsystem is used for monitoring electric energy characteristics of all power supply sections of a railway power supply network, and providing the power characteristics for the power regulation subsystem. The power regulation subsystem comprises power regulating units. Each power regulating unit comprises a first power regulation arm and a second power regulation arm, wherein the first power regulation arm is connected with the first power supply section of the power supply network, and the second power regulation arm is connected with a neural section adjacent to the first power supply section. The flexible ground automatic neutral-section passing system of the electrified railway has the advantages that an electric locomotive can pass the neutral section safely and stably without reducing the load in an electrified mode, locomotive protection parameters do not need to be modified, and the adaptive capacity is high.

The invention provides a test platform for large energy storage converters, comprising an energy storage converter connected with an upper computer monitoring system. The input end and the output end of the energy storage converter are respectively connected with a power grid through a battery simulation system and an anti-islanding detection device. An energy storage converter detection device is connected across the two ends of the energy storage converter. The battery simulation system includes an energy management device. Compared with the prior art, the test platform for large energy storage converters, provided by the invention, is strong in applicability and stable in performance and can effectively improve the test accuracy of electric performance and grid connection performance of large energy storage converters.

In a vehicle drive system, a pair of rear wheels is driven by first and second motors. The first motor is designed to specifications suited to delivering torque at low rotational speeds and the second motor is designed to specifications suited to delivering torque at high rotational speeds. The motor used to drive the rear wheels is selected based on the vehicle speed. The change in the operations of the first and second motors is synchronized with a shifting of a transmission disposed between an engine and a pair of front wheels. Thus, the vehicle drive system is configured and arranged to accommodate speeds ranging from low speeds to high speeds in a sufficient manner without requiring the drive source to become large.

A search engine optimizer that works independently and in parallel with a browser and search engine supercomputer to gather, analyze, and distill input information interactively. The optimizer reorganizes the input, and provides an optimized version as an output. The optimized version of the input (e.g. output) is sent to the search engine, which responds to the end user with search results. The optimizer recognizes each request as a pattern and stores the pattern in an advanced Glyph format. This permits the optimizer to identify a left and right side human brain checkmate combination required to achieve certitude.

The search engine optimizer transforms input information interactively and works independently and in parallel with a browser and search engine supercomputer. The optimizer reorganizes the input, and provides an optimized version as an output. The output (Optimized, reorganized input) is sent to the search engine, which responds to the end user with search results. The optimizer recognizes each request as a pattern and stores the pattern in an advanced Glyph format. This permits the optimizer to use left brain English language and right brain geospatial key featured association equation to gain factor the best results, and then using deductive reasoning feedback equation attenuate content with confounding variables in order to stabilize and reduces sensitivity parameter variations due to the environment and identify a left and right side human brain checkmate combination required to achieve certitude.

The invention relates to the technical field of electric energy measurement, in particular to an anti-DC component current transformer error tester and a test method thereof. The anti-DC component current transformer error tester comprises a casing, an anti-DC component current transformer test circuit and a data processing unit, wherein the anti-DC component current transformer test circuit and the data processing unit are both arranged in the casing; the anti-DC component current transformer test circuit comprises a voltage regulator, a current amplifier, a first rectifier diode, a second rectifier diode, a current-limiting resistor, a first half-wave current sampling resistor, a second half-wave current sampling resistor and the like. According to the anti-DC component current transformer error tester and the test method thereof disclosed by the invention, the voltage regulator and the current amplifier are adopted for amplifying current; half-wave current is outputted by using diode rectification; primary half-wave current and secondary current of the transformer are sampled by adopting a standard resistor; ratio error and phase error of fundamental waves are obtained by adopting a simple reliable amplifying circuit and a high-resolution A / D sampling conversion module. With reasonable circuit design and accurate calculation, the accuracy and the stability of the device areguaranteed.

A vehicle drive apparatus is provided that comprises first and second drive sources, a main clutch, a subordinate clutch, a drive source selecting section, and a clutch control section. The first and second drive sources output drive forces to a first wheel. The main clutch is configured to simultaneously shut off delivery of outputs from the first and second drive sources. The subordinate clutch coupled to the first drive source is configured to shut off delivery of only the output from the first drive source. The drive source selecting section is configured to select at least one of the first and second drive sources to output the drive force. The clutch control section is configured to release the subordinate clutch while the main clutch is temporality released upon a determination of the first drive source being switched from an output delivery state to an output stop state.

The invention discloses a five-level active midpoint clamping type H bridge converter. The converter comprises three single-phase H bridge converters; each single-phase H bridge converter is composed of a first bridge arm and a second bridge arm; two ends of an input power supply (Vdc) are connected with two voltage dividing capacitors (C1, C2) in parallel, and then are connected with the first bridge arms and the second bridge arms in parallel; the two voltage dividing capacitors are connected in series; each bridge arm is a three-level active midpoint clamping topology; the structures of the a phase, b phase and c phase H bridge converters are the same; the a phase, b phase and c phase H bridge converters form three-phase four-wire alternating current output with the a, b and c three live lines through sharing a null line n; and the five-level active midpoint clamping type H bridge converter is formed. Each bridge arm device is equipped with anti-parallel diodes which form follow current channel; and a switch device unit capable of being switched on bi-directionally is formed. According to the converter provided by the invention, the maximum loss of each switch device can be independently controlled; the loss of each device on the bridge arms are averaged; the power capacity is improved; and the converter can be applied in a high power inverter.

A ferrite core includes an end face portion, a pair of outer legs protruding from the end face portion, and a center leg protruding from the end face portion between the pair of outer legs. A width W1 close to one end portion of the center leg in a Y-axis direction perpendicular to a facing direction of the outer legs is smaller than a width W2 close to the other end portion. According to this configuration, a circuit component may be positioned close to the end portion. A transformer includes the ferrite core.

The invention discloses a main circuit of a controllable current disturbing source, and belongs to the technical field of power quality disturbance generation. The main circuit of the controllable current disturbing source comprises a direct-current power supply, a high-frequency H bridge inverter, a high-frequency reactor, a direct-current power supply, a base-frequency H bridge inverter, a fundamental wave reactor and a system power supply. The main circuit of the controllable current disturbing source has the advantages of large output capacity, broad current modulation frequency band, quick response, low loss, high reliability and low cost.

The invention discloses an energy storage conversion self-power-supply mode based multifunctional power distribution detection apparatus. The multifunctional power distribution detection apparatus comprises a charging input socket, an inversion alternating current output socket, a charging management module, an alternating current signal source output interface, an alternating current signal source output monitoring device, an alternating current signal source output linear adjustment rotary knob, an energy storage residual electric quantity indicator, a direct current power supply output interface, an alternating voltage signal source output interface, an alternating voltage signal source output monitoring device, an alternating voltage signal source output linear adjustment rotary knob and a general operating switch of the host. The energy storage conversion self-power-supply mode based multifunctional power distribution detection apparatus can supply stable power supply, simplify the kinds of the onsite instruments and improve the working efficiency of the operation and management of the power grid.

The invention belongs to the reactive compensation field of power system, and provides a thyristor valve controlled type controllable paralleling reactor device configured with parallel valve branches. A controllable paralleling reactor body uses a transformer structure to be designed into a form of high short-circuit impedance or a form of a common transformer external reactor according to requirements. Three phases of the windings at a high voltage side of the controllable reactor are connected to be Y-shaped; a three-phase low voltage side has the same structure; each thyristor valve set is serially connected to a corresponding volume configuration reactor to form the valve branches of which each one is connected in parallel and configured between head and tail ends at the low voltage side; and a breaker is serially connected to a breaker serially connected reactor and connected between the head and tail ends of the low voltage side. When the manner of thyristor valve current zero-cross switching is used, the volume classification adjustment procedure is completed by the manner of thyristor valve current zero-cross switching; when the manner of thyristor valve phase control is used, the fast and smooth adjustment of the output reactive power is realized by controlling a conduction angle of the thyristor.

The invention relates to a voltage type single-stage multi-input non-isolated inverter provided with series simultaneous option switches, the circuit structure of the inverter is formed by connectionof a plurality of input filters which are not common ground and one common output filter through a multi-input non-isolated inverter circuit with series simultaneous option power switches, each inputend of the multi-input non-isolated inverter is connected with the output end of each input filter one by one, and the output ends of the multi-input non-isolated inverter are connected with the inputends of the output filters. The inverter has the advantages that multiple input sources are not common ground, simultaneous or time-sharing power supply can be realized, output and input are not separated, the output filters are not shared, the circuit topology is concise, single-stage power conversion is realized, the power density is high, the output voltage ripple is small, the application prospect is wide and the like, and a key technology is laid for the high-capacity distributed type power supply system which is powered-up jointly by various new energy resources.

The invention relates to a multi-winding, divided power supply voltage-type monopole multi-input low-frequency link inverter. The circuit structure is formed by connecting a plurality of high-frequency inverters which are isolated to another other and are provided with input filters and a shared output filtering circuit through a multi-input and single-output low-frequency transformer, each inputend of the low-frequency transformer is connected with an output end of each high-frequency inversion circuit in one-to-one correspondence, and an output end of the low-frequency transformer is connected with an input end of the output filtering circuit. The inverter has the characteristics of divided power supply of various input sources, isolation among the high-frequency inversion circuits, simple circuit topology, monopole power conversion, high voltage matching capability, high conversion efficiency, small output voltage ripple, wide application prospect and the like, a plurality of inputsources are in common ground or are in not common ground, the output filtering circuit is shared, and a key technology is laid for a large-capacity distributed power supply system for achieving combined power supply of various new energy sources.

The invention relates to a built-in common-mode electric reactor of a three-phase electric reactor, and aims to provide the built-in common-mode electric reactor of the three-phase electric reactor used for two groups of three-phase inversion output side filtering circuits in a parallel operation for filtering difference mode harmonics as well as common-mode harmonics. The built-in common-mode electric reactor of the three-phase electric reactor comprises six iron core columns, five upper iron yokes, and five lower iron yokes, wherein each iron core column is wound by a coil separately; an air gap is formed in each iron core column; the six iron core columns are divided into two groups by taking three iron core columns as one group; one iron core column group is arranged between one upper iron yoke and one lower iron yoke in parallel while the other iron core column group is arranged between another upper iron yoke and another lower iron yoke in parallel; the last three upper iron yokes are arranged above the above-mentioned two upper iron yokes in parallel while the last three lower iron yokes are arranged below the above-mentioned two lower iron yokes in parallel; and the dotted terminal of each phase of coils of one iron core column group and the dotted terminal of each phase of coils of the other iron core column group are connected together to form the common-mode electric reactor.

The invention belongs to the technical field of thermal battery positive electrode manufacturing, and particularly relates to a self-heat-release high-potential cathode material for a thermal batteryand a preparation method of the self-heat-release high-potential cathode material. The material is prepared by mixing a combustion agent, an oxidant, a combustion improver, a conductive agent and a depolarizer. The cathode material for the thermal battery can be used as a heat source to burn and release heat, and the battery is activated. The cathode material can be used as an electrode active substance to output electric energy, is high in output voltage, good in thermal stability and suitable for a high-specific-energy and long-time thermal battery, and a thermal battery prepared from the self-heat-release high-voltage thermal battery cathode material has the characteristics of high working voltage and large output capacity.

The invention relates to an external parallel time-sharing option switch voltage-type single-stage multi-input non-isolation inverter, which is formed by connecting a plurality of common-ground inputfilters and one common output filter circuit through a multi-input single-output high-frequency inverter circuit having external parallel time-sharing option four-quadrant power switches. The input ends of the multi-input single-output high-frequency inverter circuit are in one-to-one correspondence connection with output ends of the input filters respectively; and the output end of the multi-input single-output high-frequency inverter circuit is connected with the input end of the output filter circuit. The inverter has the advantages of multiple-input-source common ground and time-sharing power supply, output and input non-isolation, sharing the output filter circuit, simple circuit topology, single-stage power conversion, high conversion efficiency, small output voltage ripple and wideapplication prospect and the like, and lays a key technological foundation for a large-capacity distributed power supply system for realizing multiple-new-energy combined power supply.

The invention relates to a six-level circuit topology for a power conversion system, the circuit comprises a left circuit composed of first to fifth busbar capacitors connected in series in the same direction in turn, A first switching device A1, second switching device A2, third switching device A3, fourth switching device A4, fifth switching device A5, the sixth switching device A6 is sequentially connected in series on the right side, a first intermediate circuit composed of a ninth switching device A9, a second intermediate circuit composed of a seventh switching device A7 and a tenth switching device A10 in series, a third intermediate circuit composed of an eighth switching device A8 and an eleventh switching device A11 in series, a fourth intermediate circuit composed of a twelfth switching device A12, and three clamping capacitors. The invention can effectively reduce switching loss and voltage harmonics in the circuit, and can also control flexibly in controlling the switchingtransistor, and can be applied to power conversion devices such as inverters.

The invention discloses a device for increasing the capacity of an oil-immersed transformer. The device comprises twelve groups of finned radiators, six cooling fans, and a control box. The finned radiators are arranged on a return pipe of a transformer body. Eight groups of finned radiators are located at the high-voltage side of the transformer body, and four groups of finned radiators are located at the low-voltage side of the transformer body. The cooling fans are arranged on the finned radiators. Four cooling fans are arranged on the finned radiators on the high-voltage side of the transformer body, and two cooling fans are arranged on the finned radiators on the low-voltage side of the transformer body. The control box is positioned outside the transformer body and is connected witha motor of the cooling fans. The invention discloses a method for increasing the capacity of an oil-immersed transformer. The transformer has the beneficial effects that on the premise that the transformer body is kept unchanged, only the cooling system equipment of the transformer body is replaced. Therefore, the capacity increasing requirement of the transformer is met.

The invention relates to an external parallel time-sharing selection switch voltage-type monopole multi-input low-frequency link inverter. A circuit structure is formed by connecting a plurality of input filters which are in common ground and a shared output low-frequency isolation transformation filtering circuit through a multi-input and single-output high-frequency inversion circuit of an external parallel time-sharing selection four-quadrant power switch, each input end of the multi-input and single-output high-frequency inversion circuit is connected with an output end of each input filter in one-to-one correspondence, and an output end of the multi-input and single-output high-frequency inversion circuit is connected with an input end of the output low-frequency isolation transformation filtering circuit. The inverter has the characteristics of divided power supply, simple circuit topology, monopole power conversion, high conversion efficiency, small output voltage ripple, wide application prospect and the like, multiple input sources are in common ground, an output and an input are in low-frequency isolation, the output low-frequency transformation filtering circuit is shared, and a key technology is laid for a large-capacity distributed power supply system for achieving combined power supply of various new energy sources.

The invention discloses a current collector of a capacity type battery. The current collector of the capacity type battery comprises: an annular main body, the annular main body is provided with an axially cut-through opening, the main body is provided with a plurality of through holes, and the upper end of the main body is provided with a strip-shaped tab and a positioning sheet horizontally extended outwards. The main body with an opening is adopted to allow the current collector to be easy to install, the current collector is clamped and then is installed after the outer diameter of the current collector is reduced by applying small force during assembly, the outer wall of the current collector can be in close contact with a positive carbon ring after rebounding due to certain elasticity of the material of the current collector, the inner wall of the positive carbon ring cannot be damaged, the internal resistance of the battery can be well reduced, and the increase of the internal resistance of the battery in the later use period is ensured to be small.

The invention relates to a series-connection simultaneous-selection switching voltage type single-stage multiple-input low-frequency link inverter, which is formed by connecting a plurality of not-common-ground input filters and one common output low-frequency isolation transformer filter circuit through a multi-input single-output high-frequency inverter circuit having series-connection simultaneous-selection power switches. The input ends of the multi-input single-output high-frequency inverter circuit are in one-to-one correspondence connection with output ends of the input filters respectively; and the output end of the multi-input single-output high-frequency inverter circuit is connected with the input end of the output low-frequency isolation transformer filter circuit. The inverterhas the advantages of multiple-input-source not common ground, simultaneous or time-sharing power supply, output and input low-frequency isolation, common output low-frequency isolation transformer filter circuit, simple circuit topology, single-stage power conversion, high conversion efficiency, small output voltage ripple and wide application prospect and the like, and lays a key technologicalfoundation for a large-capacity distributed power supply system for realizing multiple-new-energy combined power supply.