733results about "Three-or-more-wire dc circuits" patented technology

The invention relates to the field of new energy charging, in particular to a main circuit topology based on an integrated over-charging device for light storage and charging and a control method. The system is composed of the following parts: an ACDC module, a charging DCDC module, a photovoltaic DCDC module, a DCAC module and a battery, wherein the battery is used for storing redundant electric quantity and discharging the electric quantity to a charging pile for use; the invention provides a main circuit topology based on direct-current coupling, a very simple network architecture and an AI intelligent algorithm are fused to greatly expand the application scene of optical storage and charging in the overcharging field, meanwhile, a dynamic intelligent algorithm is combined, the dependence of an overcharging station on a power grid is reduced, and through an economic operation strategy, the system is more reliable and reliable. Efficient collaboration and accurate distribution of energy of all links of light, storage, charging and utilization are achieved, and the operation capacity and economical efficiency of a charging station are improved.

The present teachings relate to an electrical device (100) comprising: a first electrical power input (101) connectable to receive electrical power from a first power source; a second electrical power input (102) connectable to receive electrical power from a second power source different from the first power source; at least one electrical power output (121, 122, 123) , each electrical power output being connectable to supply electrical power to an individual electrical power consumer; a switching circuit (105) operable to route electrical power from the first electrical input to at least one of the electrical power outputs; a sense circuit operable to detect a depletion signal indicating an interruption in the electrical power which is being provided at the first electrical input; a controller (110) operable to control the switching circuit to switch from the first electrical power input to the second electrical power input in response to the depletion signal, thereby routing electrical power from the second electrical input to at least one of the electrical power outputs. Related methods are also disclosed.

Systems, methods, and articles for a portable power case are disclosed. The portable power case is comprised of at least one battery and at least one PCB. The portable power case has at least two access ports, at least two leads, or at least one access port and at least one lead and at least one USB port. The portable power case is operable to supply power to an amplifier, a radio, a wearable battery, a mobile phone, and a tablet. The portable power case is operable to be charged using solar panels, vehicle batteries, AC adapters, non-rechargeable batteries, and generators. The portable power case provides for modularity that allows the user to disassemble and selectively remove the batteries installed within the portable power case housing.

An electrical device (100), such as an automatic transfer switch or an electrical power distributor, comprises: a first electrical power input (101); a second electrical power input (102); an electrical power output (121, 122, 123); a switching circuit (105) operable to route electrical power from the electrical power inputs to the electrical power output; the switching circuit comprising: a first switching element (111) to allow, when enabled, power flow from the first electrical power input to the electrical power output; and a second switching element (112) to allow, when enabled, power flow from the second electrical power input to the electrical power output; a controller (110) operable to control the switching circuit to switch to the first electrical power input or the second electrical power input for selecting which of said electrical power inputs is to supply electrical power at the electrical power output; wherein the electrical device is operable to determine a timing sequence of switching between the first electrical power input and the second electrical power input.

An electrical line selection system comprising a circuit module configured to connect energy sources with multiple line outputs. The circuit module has a number of inputs configured to connect to energy sources, including rechargeable battery systems, and a number of outputs configured to connect with other electrical systems such as other battery systems, loads, charging sources, and various AC or DC power supplies. A switching circuit is contained by the circuit module and a controller manages the switching circuit based on desired connections and strategies for managing power supplies and current sinks.

The invention relates to the technical field of hydrogen production, in particular to a micro-grid hydrogen production system and method based on fuzzy logic control. Comprising a renewable energy power generation unit, an electrolytic cell array, a multi-type energy storage device, a power divider and a fuzzy logic controller, the renewable energy power generation unit is connected with the electrolytic cell array and the power divider through a direct-current bus, and the output end of the power divider is connected with the storage battery pack and the super-capacitor bank. The fuzzy logic controller collects the bus voltage fluctuation ratio, the electrolytic cell temperature gradient and the energy storage charge state in real time to serve as input variables, and outputs a multi-target optimization instruction to the power divider. Wherein the system dynamically adjusts the start-stop combination and the energy storage charge-discharge priority of the electrolytic cell array. According to the scheme, the mindset that fluctuation suppression and life management are separated in the prior art can be broken through, and a new paradigm of multi-parameter cooperative control is established.

The invention provides a multi-voltage adapter compatible method and system based on Feiteng D3000 and a medium, and the method comprises the steps: firstly, generating a first switch control signal based on a preset voltage threshold comparison logic according to first voltage information inputted by an adapter; then, according to the first switch control signal, a corresponding power supply path is switched on, second voltage information is obtained, and for the second power supply path, a first voltage regulation parameter is configured based on preset voltage regulation logic, and second voltage information is obtained; and finally, on the basis of a preset confidence degree setting logic, first confidence degree information is obtained according to the second voltage information and is used for judging and triggering a redundancy protection mechanism. According to the invention, the compatibility problem of the product is solved through voltage detection and logic decision, multiple protection is formed through dynamic voltage regulation and redundancy protection, and the reliability and safety of the product are improved.

An electrolyser plant (1A) is described. The electrolyser plant (1A) includes a first DC link (8) with at least one DC link capacitor (C1) and an AC / DC power converter (6). An electrolyser (10) is electrically connected to the first DC link (8) and adapted to receive a load current. During normal operation of the AC power network (2), a controller (12) is adapted to maintain a pre-event DC link voltage and supply a pre-event load current to the electrolyser (10). In response to a detected low voltage event, the controller (12) is adapted to: (a) initially supply the pre-event load current to the electrolyser (10) to maintain normal operation of the electrolyser (10), (b) monitor the DC link voltage, e.g., the voltage in the first DC link (8), and (c) if the monitored DC link voltage falls below a first voltage threshold that is less than the pre-event DC link voltage, reduce the load current supplied to the electrolyser (10), optionally by ramping down the load current at a suitable ramp rate.

A multiport converter designed to supply direct current loads comprising one or more energy sources, a battery, a multiport DC-DC converter connected to the energy sources and to a load, an IoT device for communication and control of the system. The multiport DC-DC converter further comprises an energy management system for selectively controlling the charging or discharging of the battery and the amount of energy directed to the load based on predictions of energy generation from the energy sources, based on a load demand and based on optimized scenarios. The multiport converter is used in green hydrogen generation plants powered by renewable energy sources, such as wind and photovoltaic energy; and a system capable of self-managing and ensuring better use of energy from the sources and better efficiency of green hydrogen generation.

Aspects of the disclosed technology include techniques and mechanisms for controlling energy usage within data centers. An energy control system (ECS) may use measurement sensors that are integrated within different energy sources and different sources of energy consumption to gather energy usage information. The ECS may analyze the energy usage information using control algorithms. The control algorithms may analyze a current operational state of the data center and identify control modes containing control actions for enhancing and managing the performance of the data center. The ECS may elect an identified control mode and may transmit, via the measurement sensors, instructions for the energy sources and the sources of energy consumption to execute the control actions outlined within the elected control mode.

A smart battery box is provided that includes a battery for selectively powering a trailer main harness coupled to an ABS controller. The smart battery box includes a controller configured to respond to a command to control a switch to close to power the ABS controller through the battery. In this fashion, the ABS controller may be tested through the smart battery box while the trailer is disconnected from a tractor.

The invention relates to the technical field of automobile control, and discloses a vehicle low-voltage power supply system which comprises a high-voltage power supply, a first voltage conversion module, a power regulation and control capacitor, a second voltage conversion module, a low-voltage energy storage module, a control module and a partial pressure load, and a set of complete power supply system is built. Wherein the power regulation and control capacitor is bidirectionally connected with the two low-voltage buses through the second voltage conversion module to realize bidirectional flow of energy. The instantaneous power impact can be effectively buffered, the voltage fluctuation of the system is reduced and the stability is improved by utilizing the high power density and the rapid charging and discharging capability of the power regulation and control capacitor. The invention further discloses a control method and device for the vehicle low-voltage power supply system and the vehicle.

An electrical architecture that allows power to be transferred to a battery powered machine while the machine is moving and that allows the machine to be charged while stationary.

The application describes a method for balancing voltages on a first and a second DC conductor in a DC grid using a balancing circuit with a first and second semiconductor switch connected in series between the first and second DC conductors, and a connection to a ground potential that is arranged between the first and second semiconductor switches. In the presence of an asymmetry in the voltages of the first and second DC conductors to ground potential, a compensation current is generated between at least one of the DC conductors ground potential via at least one of the semiconductor switches, with the asymmetry in the voltages being reduced by the compensation current (IA), with the voltages of the DC conductors to ground potential being balanced.

A packet energy transfer (PET) receiver comprising receiver front-end circuitry including an input, an output, and at least one switch connected at the output. There is receiver output control and conditioning circuity including an input and an output to be connected to an electrical load. There is a synchronizer circuit to close the switch to allow power to flow into the receiver output control and conditioning circuitry during each of the first plurality of transfer periods of the transmitter and to open the switch to prevent power to flow into the receiver output circuitry during a first plurality of sample periods. There is a load controller that disables the synchronizer circuit and operates the switch to close it and allow power to flow into the receiver output control and conditioning circuitry during subsequent transfer periods and to open the switch to prevent power to flow during a subsequent sample periods.

A system includes a source of electrical energy, a first battery electrically connected to and configured to be charged by the source of electrical energy, and a second battery electrically connected to at least one load. A power converter is electrically connected between the first battery and the second battery. The power converter is configured such that the source of electrical energy is used to charge the second battery only if a measured voltage of the first battery is above a first setpoint voltage.

The invention relates to a method for operating an electrical load (10) in a vehicle electrical system (1) of a vehicle. The electrical load (10) is supplied with electrical energy via a supply line (12) of the vehicle electrical system (1) from an energy source (7) via a distributor module (9) connected between the energy source (7) and the electrical load (10). The distribution module (9) is provided with at least one converter (15) which converts a voltage from the energy source into a low voltage for the electrical load (10), wherein the converter (15) is used to adjust the voltage (18) according to individual requirements of the electrical load (10), wherein the voltage (18) for the electrical load (10) is varied by means of the converter (15) in order to thus transmit information to the electrical load (10), wherein information is transmitted to the electrical load (10) via a data line (13) of the vehicle electrical system (1), wherein the information is transmitted redundantly with respect to the information to the electrical load (10) via the data line (13) by varying the voltage (18). The invention further relates to a corresponding distribution module (9) and to a vehicle electrical system (1) of a vehicle having at least one such distribution module (9).

A power supply system is installed in a vehicle having an autonomous driving mode. The power supply system includes a first load circuit connected to a first load that operates using electric power from a main battery; a second load circuit connected to a second load that operates using electric power from the main battery or an additional battery and is necessary for the autonomous driving mode; and a main relay provided on a power supply line for electrically connecting the first load and the second load. The first load circuit is located on an upstream side of the main relay. A branch point on a downstream side of the main relay defines a first path and a second path and allows a current flowing from the branch point to the second load by the first path and to the additional battery by the second path.

An electrical device (100), such as an automatic transfer switch or an electrical power distributor, comprises: a first electrical power input (101); a second electrical power input (102); an electrical power output (121, 122, 123); a switching circuit (105) operable to route electrical power from the electrical power inputs to the electrical power output; the switching circuit comprising: a first switching element (111) to allow, when enabled, power flow from the first electrical power input to the electrical power output; and a second switching element (112) to allow, when enabled, power flow from the second electrical power input to the electrical power output; a controller (110) operable to control the switching circuit to switch to the first electrical power input or the second electrical power input for selecting which of said electrical power inputs is to supply electrical power at the electrical power output; wherein the electrical device is operable to determine a timing sequence of switching between the first electrical power input and the second electrical power input.

The object of the present invention is to achieve redundancy of a power supply function by a simple configuration, to ensure operational continuity in case of failure. A power grid (1) comprises: a first power supply path (20-1) that is connected to a main engine-driving power source (100-0) of a vehicle via a power conversion device (101) and to loads (40-1, 41, 42-1) ; and a second power supply path (20-2) that is connected to a power source (100-2) different from the main engine-driving power source (100-0), to loads (40-2, 41, 42-2), and to the first power supply path (20-1) via a switch SW0. The switch SW0 is closed when the first power supply path (20-1) and the second power supply path (20-2) are normal, and is opened when the first power supply path (20-1) or the second power supply path (20-2) is abnormal.

A switch shut-off device is applied to a power supply system equipped with a first power source and a second power source connected via an electrical pathway, and a plurality of switches provided in the electrical pathway and connected in series with each other. The switch shut-off device includes a calculation unit configured to acquire an energization current flowing through each of a pair of switches that are adjacent to each other in the electrical pathway, among the plurality of switches, and to calculate a total current that is a sum of the energization currents flowing to an intermediate point between the pair of switches, and a shut-off unit configured to shut off the pair of switches when the total current exceeds a threshold current.

The invention belongs to the technical field of electricity-hydrogen coupling system control, and provides a voltage-air pressure stability control method and system for an electricity-hydrogen coupling system. The voltage-air pressure stability control method for the electricity-hydrogen coupling system comprises the steps that a battery energy storage system serves as an execution unit, and a voltage regulation model is constructed based on the dynamic relation between voltage and current; a solid hydrogen storage system is used as an object, and an air pressure adjusting model is constructed based on the relation between flow and pressure; constructing a hydrogen production / hydrogen consumption model based on hydrogen production / hydrogen consumption behaviors of the electrolytic cell and the fuel cell; on the basis of real-time sharing of state variables of an electricity-hydrogen coupling system, charging and discharging of a battery energy storage system in a millisecond period are adjusted according to a voltage adjusting model, so that rapid and stable control over the voltage of a direct-current bus is achieved. And regulating and controlling the hydrogen charging and discharging flow of the solid hydrogen storage system in a second-level time scale according to the air pressure regulation model to ensure the stable pressure of the buffer tank and continuous hydrogen supply, regulating the electrolysis and fuel cell power according to the hydrogen production / consumption model to ensure the balance of energy supply and demand, and finally realizing the voltage-air pressure stability coordinated regulation and control between the electric domain and the hydrogen domain.

A power supply system includes: a first power supply circuit for supplying DC power from a first power generation device to a first load device; a first power storage device connected to the first power supply circuit; a second power supply circuit for supplying the DC power from the first power generation device to a second load device; and a second power storage device connected to the second power supply circuit. In a case where supply of DC power from the first power storage device to the first load device is cut off, DC power is supplied to the first load device from the second power storage device by allowing the current backflow in the second power supply circuit.

The invention discloses a multi-path output voltage power supply module and a voltage regulation method thereof, at least two mutually independent voltage conversion circuits are arranged, each circuit converts a direct current voltage into a specific output voltage according to a specific formula, the independent design enables each circuit to flexibly adjust output according to self load requirements, and the voltage regulation efficiency is improved. Diversified load characteristic requirements are met; the intelligent feedback regulation unit collects output voltage and current data of each path in real time and transmits the data to the central control unit, the central control unit calculates voltage deviation and generates regulation signals to be fed back to each path of circuit, and the feedback regulation mechanism can sense output voltage change caused by load change in time, quickly regulate parameters and ensure that the output voltage is stable and accurate. Meanwhile, the central control unit respectively adjusts each path and only adjusts a circuit with deviation, so that other paths are prevented from being interfered, mutual influence among outputs of each path is reduced, stable output of each path according to a self target value is ensured, and the defect of mutual influence of multi-path output is effectively overcome.

The invention relates to the technical field of charging equipment, in particular to a multi-communication-mode and multi-voltage-domain power supply embedded integrated system and a charging pile, an energy supply module, a control module, an interface communication module and a wireless communication module are integrated, and a multi-voltage-domain power supply range is provided through a functional module. According to the charging pile provided by the invention, the control module, the interface communication module and the wireless communication module are integrated to supply power to the control module, the interface communication module and the wireless communication module, so that high-voltage damage of a high-voltage domain of an external power supply of the charging pile to each element is avoided, and the power supply requirements of multiple voltage domains of different elements are met; according to the charging pile, multiple external communication modes are realized, communication of the charging pile for charging various devices is improved, interactivity is improved, and the technical problems that in the prior art, the power supply voltage range of each device for supplying power to the charging pile is narrow, and the communication mode is single are solved.

A charging system includes a first device; a second device; and a power adjustment device including a DC-to-DC conversion unit; and a micro-control unit for receiving a charging instruction, a first power information of the first device and a second power information of the second device and performing the following steps: controlling the DC-to-DC conversion unit to convert a first supply current received by the first device into a first charging current according to the first power information and the second power information when the charging instruction instructs the first device to charge the second device; and controlling the DC-to-DC conversion unit to convert a second supply current received by the second device into a second charging current according to the first power information and the second power information when the charging instruction instructs the second device to charge the first device.

The present teachings relate to an electrical device comprising: a first electrical power input connectable to receive electrical power from a first power source; a second electrical power input connectable to receive electrical power from a second power source different from the first power source; at least one electrical power output, each electrical power output being connectable to supply electrical power to an individual electrical power consumer; a switching circuit operable to route electrical power from the first electrical input to at least one of the electrical power outputs; a sense circuit operable to detect a depletion signal indicating an interruption in the electrical power which is being provided at the first electrical input; a controller operable to control the switching circuit to switch from the first electrical power input to the second electrical power input in response to the depletion signal, thereby routing electrical power from the second electrical input to at least one of the electrical power outputs. Related methods and software products are also disclosed.

Provided herein is a power distribution system comprising a feedback circuit including a transistor in series with a relay, the feedback circuit regulating regulate a main power path including a main power supply connected in series with an electric power converter. The power distribution system further comprises OR-ing controllers that regulate the main power path and a backup power path including a low-voltage battery. The power distribution system further comprises terminals through which power from the main power path or the backup power path is transmitted to respective components corresponding to channels. The power distribution system further includes a microcontroller that acquires data in each of the channels and control operations associated with each of the channels based on the acquired data.

The invention relates to a rail vehicle (12) comprising a traction battery (8) and a power converter (4). The power converter (4) can be supplied with electrical current by the traction battery (8). The power converter (4) is connected to a DC electrical system (7) via a power converter voltage converter (6). The invention also relates to a method for switching on a rail vehicle (12). In this method, the vehicle voltage converter (2) is first supplied with energy from the traction battery (8) via the DC electrical system (7) before the power converter (4) is activated.

The invention relates to a charging pile relay matrix control method and device, equipment, a medium and a product, and the method comprises the steps: determining a target power module needing to be called according to an issued power distribution scheme, and controlling a target relay corresponding to the process of switching the target power module into a target charging gun to be closed or opened; when the fault information of the target relay is received, determining a fault type, and obtaining the position information of the fault target relay, the identity information of a target charging gun corresponding to the target power supply module and a preset fault relay processing strategy corresponding to the fault type; and in preset fault relay processing strategies, according to the position information and the identity information, determining a corresponding target processing strategy, and according to the target processing strategy, controlling each charging gun. According to the method, the faulted relay only affects a part of functions of the whole system, and the situation that the whole system cannot provide charging service is avoided.