115 results about "Partial current" patented technology

A method and system for modeling and processing vehicular traffic data and information, comprising: (a) transforming a spatial representation of a road network into a network of spatially interdependent and interrelated oriented road sections, for forming an oriented road section network; (b) acquiring a variety of the vehicular traffic data and information associated with the oriented road section network, from a variety of sources; (c) prioritizing, filtering, and controlling, the vehicular traffic data and information acquired from each of the variety of sources; (d) calculating a mean normalized travel time (NTT) value for each oriented road section of said oriented road section network using the prioritized, filtered, and controlled, vehicular traffic data and information associated with each source, for forming a partial current vehicular traffic situation picture associated with each source; (e) fusing the partial current traffic situation picture associated with each source, for generating a single complete current vehicular traffic situation picture associated with entire oriented road section network; (f) predicting a future complete vehicular traffic situation picture associated with the entire oriented road section network; and (g) using the current vehicular traffic situation picture and the future vehicular traffic situation picture for providing a variety of vehicular traffic related service applications to end users.

The invention relates to the field of power equipment online monitoring, in particular to the online monitoring of grounding networks of power stations and substations. A system monitors the partial current of an overhead ground wire or cable sheath of a power transmission line, the current of a neutral point of a transformer, the ground potential rise of the grounding network and own impedance of a grounding body in real time in the grounding short-circuiting of a power grid, comprehensively records the operating state of the grounding network, and changes electric quantities which cannot bemonitored conventionally into constantly measured quantities. The execution of online monitoring of the grounding network can provide quantitative indicators for designing, capital construction, running maintenance and realization state management, explores new ways for increasing a shunting coefficient and reducing grounding current, turns the blind huge investment in the grounding network, improves the security, reduces equipment risks and running cost, and achieves immeasurable economic benefits. Similar technologies are not put forward at home and abroad at present.

The invention discloses a remote electricity larceny prevention device and a remote electricity larceny prevention method. The electricity larceny prevention device comprises a phase current collecting unit, a user current collecting unit and an electricity larceny judging unit, and the phase current collecting unit and the user current collecting unit are respectively in communication with the electricity larceny judging unit. The phase current collecting unit is used for collecting a phase current value on an output line of a power supplying unit and outputting the collected phase current value to the electricity larceny judging unit. The user current collecting unit is used for colleting partial current values, of all users, of the power supplying unit, wherein the power supplying unit supplies power to the users through output phase lines, and the user current collecting unit outputs the partial current values of the users to the electricity larceny judging unit. The electricity larceny judging unit judges whether electricity larceny occurs on power supplying circuits through comparison of the sums of the phase current value and the partial current values. According to the remote electricity larceny prevention device and the remote electricity larceny prevention method, whether electricity larceny occurs on the power supplying circuits is judged through a different value of the sums of the phase current value and the partial current values, the intelligent level of electricity larceny prevention warning is greatly improved, and the defect of false warning is avoided.

The invention provides a switch voltage-stabilized power supply. The switch regulated power supply comprises a switch part, a sampling part, a feedback comparison control part, a pulse-width modulation (PWM) control signal generation and amplification part, a constant current source control part and an output filter part, wherein the sampling part is used for bearing partial current output by the output filter part so as to acquire feedback voltage; the constant current source control part is used for controlling the current which flows through the sampling part; the feedback comparison control part is used for comparing the feedback voltage with a reference voltage so as to generate small signal pulse signals; the PWM control signal generation and amplification part is used for modulating and amplifying the small signal pulse signals so as to acquire PWM control signals; the switch part is used for subjecting the input voltage to pulse width modulation under the control of the PWM control signals so as to supply the voltage to the output filter part; and the output filter part is used for filtering the voltage after the pulse width modulation and outputting the voltage. The invention also provides a voltage stabilizing method for the switch voltage-stabilized power supply. According to the switch voltage-stabilized power supply and the voltage stabilizing method, output voltage ripples are reduced.

The invention relates to a method for reducing horizontal current in molten aluminum of an aluminum electrolysis bath. The method for reducing the horizontal current in the molten aluminum of the aluminum electrolysis bath is characterized in that: partial current guide material (3) is spread at a cathode carbon block (1) or a steel bar (2) or connecting material cathode paste thereof or phosphorus pig iron (4), so that the current in the molten aluminum enters the cathode carbon block relatively uniformly, passes through the steel bar and is released from the side of the electrolysis bath. In the current guide material (3), at least one material or an insulating material composition, the resistivity of which is different from that of the carbon block or the steel bar, is spread at different parts of a cathode as required and can be used for substituting partial carbon block material or steel bar material or combined together with the carbon block material or the steel bar material, and meanwhile, the width, the height or the thickness of the current guide material (3) can be gradually changed in a step shape or a gradual change form by adjusting the shape of the current guide material (3), so that the resistance distribution of the cathode is changed, the current distribution of the cathode is regulated, the horizontal current in the molten aluminum is reduced, the stability of magnetic fluid of the electrolysis bath is increased, the efficiency of the current is improved and the service life of the bath is prolonged.

The invention discloses a DBN (deep belief network)-GA neural network-based fault detection method of a high-voltage circuit breaker. The method specifically includes the following process: using current data, which are obtained by monitoring of an online monitoring system, as input variables; then using a deep belief network-based deep learning algorithm to construct a fault type prediction model, determining restricted Boltzmann machine models, marking the same as RBM, extracting partial current data samples to send the same to the constructed models, and carrying out training; carrying outtraining learning on the entire deep belief network model after training on the restricted Boltzmann machines; and finally, inputting all the data into the trained fault type prediction model, and processing the input coil tripping/closing current data by the fault type prediction model to complete fault detection of the high-voltage breaker. According to the method disclosed by the invention, a fault type of the circuit breaker can be judged more accurately and efficiently while compensating for the deficiencies of artificial neural network detection is realized, and then efficient inspectioncan be performed.

The system has two voltage controllers providing constantly controlled internal useful voltages at a preset voltage level. A third voltage controller is provided, through which partial current of supply current flows for setting and maintaining an internal input voltage of the system at the voltage level. The useful currents that are driven respectively by the useful voltages flow through an operating and evaluation circuit (50). : An independent claim is also included for a field device comprising an electronic system. USE : Used for a field device that is utilized as a measuring device for measuring physical and/or chemical parameter e.g. flow rate, density, viscosity, liquid level, pressure, temperature and pH value in a pipe and/or a container. ADVANTAGE : The useful currents driven by useful voltages flow via the operating and evaluation circuit, thus keeping the operating and evaluation circuit in normal operation of the field device and supplying individual selected functional units with current. DESCRIPTION OF DRAWINGS : The drawing shows a block diagram of field device electronics in a field device. 17, 18 : Sensors 20 : Field device electronics 50 : Operating and evaluation circuit 60 : Control unit.

The invention discloses an electricity larceny prevention method. The electricity larceny prevention method includes the concrete steps: acquiring the phase current value on a power supply unit output phase line, and damaging the waveform characteristic of a sine wave of each phase alternating current; acquiring the phase current value on the power supply unit output phase line and the partial current values for all the users who are supplied with power by the power supply unit, and transmitting the alternating current of the waveform characteristic of the sine wave to an electricity utilization end; and recovering the waveform characteristic of the sine wave of each phase alternating current at the electricity utilization end, comparing the phase current value with the sum of the partial current values, and determining that electricity larceny exists on a power transmission line of the power supply unit. The electricity larceny prevention method can further reduce occurrence of electricity larceny prevention, and can determine whether electricity larceny occurs on a power supply line by comparing difference between the phase current value and the sum of the partial current values for all the single phase users who are supplied with power by the phase line; and as no technology loss exists on the phase line and the branch lines, for the current value, the intelligence level for electricity larceny prevention alarm can be greatly improved and the defect for false alarm can be avoided.

The invention relates to an electronic system for a field device comprising a current controller, through which a supply current flows, for setting and/or modulating the supply current, the latter being driven by an supply voltage that is provided by means of the external energy supply. The electronic system for a field device also comprises an internal operating and evaluation circuit for controlling the field device, in addition to an internal supply circuit that is applied to an internal input voltage of the field device electronic system, is separate from the supply voltage and feeds the internal operating and evaluation circuit. A useful voltage controller, through which a first partial current of the supply current flows at least intermittently, is provided in the supply circuit, said controller providing an essentially constantly controlled first internal useful voltage at a predeterminable first voltage level in the electronic system of the field device. In addition, the supply current comprises a second useful voltage controller, through which a second partial current of the supply current flows at least intermittently, said controller providing a second internal useful voltage in the electronic system of the field device that can be varied within a prededeterminable voltage range and a voltage controller, through which a third partial current of the supply current flows at least intermittently, for setting and maintaining the internal input voltage of the field device electronic system at a predeterminable voltage level. According to the invention, both a first useful current that is driven by the first useful voltage and a second useful current that is driven by the second useful voltage flow through the operating and evaluation circuit at least intermittently.

A method for generating an alternating electric current is provided. In the method, multiple partial currents are generated and superimposed into a total current. Each of the partial currents is generated using a modulation method. The modulation method uses a tolerance band method having tolerance limits that are changeable.

In order to achieve thermomechanical overload protection with a broad adjustment range for protecting against overload currents, the live components carry an electrical current which is between the value of the overload current and zero. According to the invention, switching means are used which, in a preferred embodiment, switch the current, in parallel, from a first current branch to at least one second current branch, the parallel-connected at least one current branch carrying a partial current, which is between the value of the overload current and zero. In the associated overload protection device (102), contact means are provided which are associated with live components on two current branches (1, 2) which can be connected in parallel with one another, wherein at least one current branch can be switched on and off by the switching means. In an alternative embodiment, a first and a second current branch are connected electrically in series by switching means, as a result of which it is possible to switch over from an upper adjustment range to another, lower adjustment range of the broad adjustment range.

The device for generating an electrical current, intended for a pipeline includes a pipe element (1), a rotor (2) suitable for being set in motion by the fluid and a stator (3a, 3b) arranged to cooperate with an end of the rotor (2) opposite to an axis of rotation (4) of said rotor (2) in order to generate the electrical current. The axis of rotation (4) is mounted at its opposing longitudinal ends (4a, 4b) on first and second supports (5a, 5b) arranged on either side of the plane of rotation (P1) of the rotor (2) and each linked to the pipe element (1). The stator has at least one ring (3a) arranged on one side of the rotor (2), and each ring (3a, 3b) includes a circuit suitable for generating all or part of the electrical current when excited by a magnetic element of the rotor (2).

The present invention is one kind of high-brightness light-emitting diode. It has ohmic contact layer of p-type GaInP or oxide electrode contact layer of short-period superlattice thin layer with 10 to the power 18 /cm -3 over n-type or p-type doping density. The oxide electrode contact layer made of the special material has the In component regulated properly and thus light absorption amount, greatly raised p-type carrier density, raised light-emitting diode brightness and reduced forward voltage drop. In addition, the present invention discloses one oxide electrode contact layer with nettedor column pattern to expose partial current dispersing layer and this can reduce light absorbing area and raise the output light strength of the light-emitting diode without affecting the contact resistance and forward voltage.

The invention discloses a producing method for improving the consistency of the internal resistance of a battery, which is characterized in that the method is to directly cut partial current collector on a battery current collector by using laser as an electrode lug of a battery electrode plate. The height of burr cut by the laser is less than 0.01m. The invention relates to a brand-new electrode lug mode, which completely solves the insufficient solder problem between nickel and aluminum electrode lugs and the current collector, realizes that the current collector is directly used as the electrode lug and improves the consistency of the internal resistance of the battery as well as the circulating performance and the safety performance.

A cryostat configuration (10), with at least one cryostat (11), which has at least one first chamber (1) with supercooled liquid helium having a temperature of less than 4 K and at least one further chamber (2), which contains liquid helium having a temperature of approximately 4.2 K, a Joule-Thomson valve (3) being disposed in the first chamber, wherein the first chamber is separated from the further chamber by a thermally insulating barrier (4), wherein helium from the first or the further chamber expands through the Joule-Thomson valve into a pump-off pipe (13), which is in thermal contact with the helium of the first chamber and supercools the latter, and wherein the pump-off pipe is directly or indirectly in thermal contact with the further chamber during its further progression and is then connected to the inlet of a pump (14), is characterized in that the outlet of the pump and/or an outlet for evaporating helium of at least one of the cryostats is fluidically connected to the further chamber through a cryogen pipe (15), and that the cryogen pipe has a branch-off device (16), which returns a partial current of the helium located in the cryogen pipe into the further chamber. In this way, the helium consumption and therefore the operating costs are reduced while the pressure in the first chamber remains constant.

A charge pump of a phase locked loop and method thereof, includes a first current source that supplies a first additive partial current to a node, a first current sink that draws a first subtractive partial current from the node, a second current source that supplies a second additive partial current to a node, and a second current sink that draws a second subtractive partial current from the node, wherein a sum of the currents (I_—2+, I_—1−) provides a charge current for a loop filter of the phase locked loop and a sum of the currents (I_—1+, I_—2−) provides a discharge current for the loop filter. The charge pump also includes a first current control element and a second current control element. The first current control element controls the sum of the first additive partial current (I_—1+) and the second subtractive partial current (I_—2−), and the second current control element controls the sum of the first subtractive partial current (I_—1−) and the second additive partial current (I_—2+).

The present invention relates to an apparatus for measuring an electric current flowing through a bus bar, which comprises the bus bar itself, a compensation coil and a magnetic field sensor. A through-hole is provided in the bus bar, which divides the electric current flowing through the bus bar into two partial currents that flow round the through-hole. In the through-hole there is provided a compensation coil for generating a compensation field which, at a predetermined position of the through-hole, compensates the magnetic fields generated by the partial currents and an external magnetic field generated outside the apparatus, so that the magnetic flux density of the resulting magnetic field at the predetermined position does not exceed a predetermined threshold. The magnetic flux density of the resulting magnetic field at the predetermined position of the through-hole is detected by the magnetic field sensor which is provided in the through-hole of the bus bar. The compensation coil has a bobbin whose inner part receives the magnetic field sensor, and which is precisely fitted in the through-hole of the bus bar.

A system is provided. The system includes a plurality of uninterruptible power supplies (UPSs), each UPS of the plurality of UPSs including an inverter, a ring bus, and at least one controller communicatively coupled to the plurality of UPSs, the at least one controller configured to control at least one bridge current in each UPS, the at least one bridge current controlled such that the inverter of each UPS operates in a partial current limiting regime between a full current limiting regime and a linear mode.

A laser drive circuit and use of digital-to-analog converters is provided, each with a current input and a current output to set current values of partial currents switchable by means of digital channel signals to provide a laser current pulse at least on the basis of a sum of partial currents, wherein at least one current output of one of the digital-to-analog converters is connected to at least one current input of an additional digital-to-analog converter via an analog switch.

The invention relates to a current-induced spin polarization method of hexagonal warping of a Bi2Te3 surface state. The method comprises the following steps: preparing a Bi2Te3 film sample and depositing a rectangular electrode on the Bi2Te3 film sample; connecting the electrode with the input end of the current preamplifier through a lead; respectively using the chopping frequency of the chopper and the frequency doubled by the photoelastic modulator as reference signals of the lock-in amplifier 1 and the lock-in amplifier 2, wherein the output end of the current preamplifier is connected with the input ends of the lock-in amplifier 1 and the lock-in amplifier 2; enabling light emitted by the laser to sequentially pass through the chopper, the polarizer, the photoelastic modulator and the lens, and irradiate the midpoint of a connecting line of the two electrodes on the sample at an incident angle theta; measuring common photoconductive current and circular polarization related photocurrent under different incident angles; and calculating to obtain circularly polarized light conductivity differential current under different incident angles, and fitting through a formula to obtain a change curve of the circularly polarized light conductivity differential current of the Bi2Te3 surface state hexagonal warping along with the incident angles.

The invention relates to a design method of a double-magnetic-core measurement differential leakage current sensor. The method comprises the following steps: establishing a magnetic induction intensity amplitude model of the double-magnetic-core measurement differential leakage current sensor; establishing a double-magnetic-core measurement differential leakage current sensor optimization model bytaking the intensity and the signal-to-noise ratio SNR of a detection magnetic field as optimization targets; and determining the solution of the magnetic induction intensity amplitude model of the double-magnetic-core measurement differential leakage current sensor meeting the optimization target, and further obtaining the geometric dimensions of the inner magnetic core and the outer magnetic core of the double-magnetic-core measurement differential leakage current sensor. According to the method, a single-phase winding incoming and outgoing line differential current model is established, and an analytical expression of a cable position, a double-magnetic-core size, a material parameter, a load current, a leakage current and magnetic induction intensity in a solving area is given. The method is simple and direct, and the double-magnetic-core leakage current sensor design method based on the differential measurement mode under different power equipment requirements can be provided.