919results about "Three-or-more-wire dc circuits" patented technology

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.

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.

An energy storage control system includes a plurality of energy storage modules and a plurality of control apparatuses in one-to-one correspondence with the plurality of energy storage modules, where each control apparatus is connected to the corresponding energy storage module, and the energy storage module includes a battery unit and a power unit, the battery unit including at least one battery group. The control apparatus includes a sub-module controller and at least one battery management system in one-to-one correspondence with the at least one battery group, where each battery management system is connected to the corresponding battery group and the sub-module controller, and the sub-module controller is connected to the power unit.

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.

The present disclosure relates generally to high voltage systems. In one embodiment, a balancing and measuring circuit is disclosed, comprising: a first capacitor electrically coupled between a first voltage and a chassis voltage, wherein the first voltage is greater than the chassis voltage; a second capacitor electrically coupled between a second voltage and the chassis voltage, wherein the second voltage is less than the chassis voltage; a first circuit associated with the first capacitor; and a second circuit associated with the second capacitor, wherein the first circuit and the second circuit each comprise: a resistive element; a switching element; a voltage circuit configured to generate a reference voltage; and a controller configured to monitor a voltage of a reference capacitor and to control the switching element based on the monitored voltage, wherein the resistive element and the switching element are connected in series.

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 invention discloses an intelligent UPS power supply control system, and relates to the technical field of UPS power supplies, and the system comprises a first detection module, and when the first detection module detects that the electric energy provided by a power supply control module is lower than a first low-voltage threshold value and is greater than a second low-voltage threshold value, the UPS power supply is started; the first battery module or the second battery module and the power supply control module are controlled by the energy-saving control module to carry out electric energy superposition power supply, so that the electric energy consumption of the first battery module and the second battery module is reduced, and the electric energy of the power supply control module is reasonably utilized; the charging and discharging control module automatically controls the first battery module or the second battery module to carry out balanced discharging and controls the first battery module and the second battery module to carry out series discharging, and the charging and discharging control module can carry out balanced charging control. According to the intelligent UPS control system, the cruising ability of the power supply can be increased, the power supply efficiency of the power supply is improved, the charging and discharging safety is improved, and the service life is prolonged.

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 relates to a single-stage PFC gallium nitride power supply non-inductive power distribution method and system, and the method comprises the following steps: a main control chip of a gallium nitride power supply monitors the states of a plurality of charging interfaces, and builds communication with a load and obtains the charging parameter information of the load when there is a charging interface connected with the load; if the acquisition fails, adopting a set detection charging strategy to charge the load, and monitoring a temperature change curve of the charging interface; the main control chip predicts an output power value range when the charging interface reaches a set safe charging range according to the fed-back temperature change curve; matching a set charging strategy according to the obtained output power value range; by applying the method, the method is not only suitable for loads capable of obtaining the charging parameters through communication, but also suitable for most loads incapable of obtaining the charging parameters through communication, load charging power distribution can be carried out according to the priority, adaptability is better, and charging is more scientific and efficient.

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.

An electrical power distribution system includes a first power bus operating in a first voltage range and a second power bus operating in the first voltage range. A first eFuse circuit selectively couples a power source to the first power bus. A second eFuse circuit selectively couples the power source to the second power bus. A first accumulator is coupled to a first node between the first eFuse circuit and the first power bus. A second accumulator is electrically coupled to a second node between the second eFuse circuit and the second power bus. The first eFuse circuit opens in response to a first electrical fault at the first power bus, and the second power bus is powered with the power source or the first accumulator. The second eFuse circuit opens in response to a second electrical fault at the second power bus, and the first power bus is powered with the power source or the first accumulator.

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.

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.

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 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 discloses a consistency-based self-adaptive distributed hierarchical control method for an energy storage system. The method comprises the following steps: establishing a photovoltaic water electrolysis hydrogen production system model consisting of a photovoltaic battery, a lithium battery, an electrolytic bath, a constant-power load and a DC / DC converter; in a communication layer, energy storage units in the system are regarded as agents, an average state estimator is designed based on multi-agent consistency, the average value of state variables is calculated and transmitted to adjacent energy storage units through an adjacent communication network, dependence on a centralized controller is reduced, and communication burden is relieved; in the main control layer, an improved droop control method is adopted, a droop coefficient is improved based on a sigmoid function, load current distribution is adaptively adjusted to achieve charge state balance, and an acceleration factor improved based on a normal distribution function is added; and in a secondary control layer, designing a unit virtual voltage drop balance item, eliminating the influence of line impedance, designing an average bus voltage compensation item, and compensating the average bus voltage to a reference value.

A power conversion device includes: a DC / DC converter; and a control circuit unit that controls the DC / DC converter, in which the DC / DC converter includes a first power output circuit that converts first direct current power into first alternating current power, an isolation transformer that converts the first alternating current power into second alternating current power, and one or a plurality of second power output circuits, each of which converts the second alternating current power into second direct current power, and the control circuit unit includes a resonance characteristic calculator that calculates a resonance characteristic of the second power output circuits based on a load for each of the second power output circuits to output the second direct current power, and determines a drive frequency of the first power output circuit based on an output request value of the second power output circuit and the resonance characteristic that is calculated.

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.

The disclosure provides a charging and discharging method for a cleaning device, and a cleaning system. The charging and discharging method for a cleaning device includes: operating in a self-cleaning mode to clean a self-cleaning object of the cleaning device; and supplying at least part of a current from a charging power supply to a workload in the self-cleaning mode. In the solution according to the disclosure, the at least part of the current from the charging power supply is supplied to the workload in the self-cleaning mode, thus reducing the power consumption of a battery in the self-cleaning mode and prolonging the overall battery life of the battery.

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.

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 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 method for execution in a central controller comprises obtaining an interconnection topology for a plurality of nodes interconnected via hybrid data / power links; obtaining a power distribution map associated with the topology; and causing DC power to be distributed to the nodes via the links according to the power distribution map. Also, such a node in which there is at least one power-receiving port and at least one power-transmitting port, a controller and power switching circuitry. The controller operates based on power drawn from a portion of the DC power received via the power-receiving port. The controller determines a destination of data packets received via any of the ports and outputting those of the received data packets that are not destined for the network device via another one of the ports. The controller also causes the power switching circuitry to output via plural power-transmitting ports respective portions of the received DC power received at the power-receiving port.