Abstract: A charging device for an electrically-drivable vehicle comprises a power-supply connector (100), a power-receiving connector (200), a safety-charging-signal-generating unit provided in the charging device, a CAN control module receiving a safety-charging signal generated by the safety-charging-signal-generating unit. The charging device may be configured to be chargeable to the electrically-drivable vehicle when the charging terminal and the charging-terminal-accommodating chamber are connected to each other. The power-supply connector and the power-receiving connector are engaged with the CAN module detecting the safety-charging signal. The personal safety during maintenance or other unexpected accidents is enhanced.

Abstract: A power delivery rate from a renewable power source to a load is managed by determining, by processing circuitry, a change in a power generation rate, determining, by the processing circuitry, whether the change in the power generation rate exceeds a limit, and then, adjusting, by control circuitry, a power transfer rate to or from a power storage device, such that the adjusting is sufficient to prevent the power delivery rate from exceeding the limit.

Abstract: A voltage application unit causes switching elements to apply voltage to flow an electric current into corresponding windings to generate a revolving magnetic field. A period derivation unit derives an energization period of the windings. A signal generation unit generates a PWM signal for causing the voltage application unit to activate and deactivate the switching elements, such that a duty ratio decreases gradually in a predetermined time period subsequent to the derived energization period. A period specifying unit specifies a detection period of an electric current, which is supplied from the switching elements presently switched and deactivated, by a predetermined time period between an edge, which is caused when the PWM signal changes in level to deactivate the switching elements, and a time point in advance of the edge in the energization period.

Abstract: The invention relates to a power supply arrangement of a transport system. The transport system comprises a motor for moving the transport appliance; a power supply circuit of the transport system, for supplying power between the power source of the transport system and the motor; a power controller of the energy storage, which power controller comprises at least one controllable switch; an energy storage, which is connected to the power supply circuit of the transport system via the power controller of the energy storage; and also a power control, which is fitted to control the aforementioned at least one controllable switch of the power controller of the energy storage, for adjusting at least one electrical magnitude relating to the power supply between the power supply circuit of the transport system and the energy storage. The power controller of the energy storage is fitted to discharge the aforementioned energy storage with a power limitation.

Abstract: A method and apparatus for transmitting data in a wireless communication system are disclosed, which transmit uplink data in consideration of mobile station (MS) consumption power such that a UE can be stably operated at a cell edge. A method for transmitting data by a mobile station (MS) of a wireless communication system includes transmitting, if MS power consumption is higher than limitation of power consumption, data to a base station (BS) with power higher than the limitation of power consumption using power supplied from a primary power-supply unit and a storage unit during a first time, and charging the storage unit using the primary power-supply unit during a second time, wherein the limitation of power consumption indicates maximum power amount capable of being normally supplied from the primary power-supply unit.

Abstract: An adapter including an associated battery capable of powering an electronic device. The power adapter typically includes the battery as an integral component that is connected to a plug or other interface capable of mating with a power source, such as a wall socket. Thus, the adapter battery may provide power either to operate the device or charge a battery within (or otherwise associated with) the device even if the adapter is not connected to a power source.

Abstract: An online method and apparatus for determining state of charge (SoC) and state of health (SoH) of energy storage components in a microgrid environment is disclosed. The apparatus and methods may estimate SoC and SoH of an energy storage device in a real-time fashion. The SoC may be used to preserve/extend the life of the energy storage components, while the SoH may be used for trend analysis and energy storage component prognostics.

Abstract: Disclosed herein is a control system, including: a first apparatus configured to adjust an output voltage thereof so that the output voltage may be included in a range determined in advance in response to a variation of an input voltage thereto from an electric power generation section; and a second apparatus configured to change a charge rate into a battery in response to the variation of the input voltage supplied from the first apparatus, wherein when a state in which the output voltage from the first apparatus is near to a lower limit thereof continues for a period longer than a period of time set in advance, one of two or more lower limits prepared in advance is selected as the value of the lower limit in accordance with to which one of sections set in advance input current from the electric power generation section belongs.

Abstract: A circuit which extends the operational life of a main power source, said circuit comprising a pair of thermoelectric generators (TEGs) for converting thermal energy from a heat source into electrical energy; a pair of capacitors arranged in parallel, each coupled to one of the TEGs for storing the electrical energy generated by said TEG; a power converter; a first switching element coupled between a first capacitor in the pair of capacitors and the power converter; a second switching element coupled between a second capacitor in the pair of capacitors and the power converter; and a monitor/controller coupled to said first and second switching elements and each of said capacitors for selectively and alternatively switching the first and second switching elements in order to selectively provide power from one of the capacitors to a load, thereby reducing the amount of power drawn from the main power source.

Abstract: An embodiment of the present invention includes first and second electrical energy sources configured to supply current to an output, and a controller configured to receive a signal indicative of the current being drawn at the output, to compare the output current with a reference current level, and to regulate the voltage provided by the one of the first or second electrical energy sources such that: when the output current is lower than or equal to the reference current level, the first energy source supplies current equal to the output current; and, when the output current exceeds the reference current level, the first energy source supplies current equal to the reference current level and the second energy source supplies the remaining current required by the load.

Abstract: This disclosure generally relates to stabilizing energy provided by an energy source, and more particularly to systems and methods for using multiple types of energy storage devices to selectively capture and provide energy. An energy source provides energy, and the energy storage devices selectively capture energy provided by the energy source in excess of an immediate energy requirement of a load and selectively provide energy when the immediate energy requirement of the load exceeds the energy provided by the energy source.

Abstract: A control system for parallel connected inverter legs energized by a power source and configured for servicing a load is disclosed. The invention facilitates the number of running inverter legs to adaptively react to changes in the load by dynamically switching various inverter legs “on” or “off” in response to variations in load demand, while continuing magnetization of an output transformer connected with an “off” inverter leg via a back-feed from another output transformer of an “on” inverter leg, greatly improving the dynamic response to load changes. This design enables a fast reaction to load changes with “off” inverter legs transitioning to on-line operation instantaneously.

Abstract: When charge power or discharge power of each individual sodium-sulfur battery included in a plurality of sodium-sulfur batteries becomes 1/n (n is a natural number) or less of a rated output, individual sodium-sulfur batteries are sequentially stopped. This prevents the discharge power (or the charge power) of the sodium-sulfur battery from becoming minute, so that a battery depth (or a stored energy) of the sodium-sulfur battery can be accurately managed.

Abstract: A multisource power system utilizing output isolated DC-DC converters in a serial input, parallel output arrangement provides uniform input voltage distribution and selective maximum power tracking wherein embodiments include maximum power tracking (“MPT”) with a single MPT controller, a battery dominated output voltage bus, and a regulated output voltage bus.

Abstract: A power generation system comprises a conventional motor-generator system as may be found in a stand-by power system with the addition of integrated renewable and stored energy assets. A software defined control system allows for optimizing total cost of power and allows user control or interconnection with micro-grid or Utility Power systems.

Abstract: A portable generator system provides power to a load source including an engine and a generator. The engine drives the generator to provide a generator alternating current (AC) electrical power output. An energy storage system (ESS) provides an ESS direct current (DC) electrical power output. A first inverter is connected to the generator for receiving the generator AC electrical power output and for providing a DC power output. A second inverter is connected to the first inverter and the ESS for receiving the DC power output from the first inverter and the ESS DC electrical power output for providing an AC power output. A first power mode includes the generator maintaining a first generator power output level corresponding to a specified power requirement of a load source, and the ESS providing an additional first ESS power output level for satisfying the specified power requirement of the load source.

Abstract: The present invention provides a battery-based grid energy storage for balancing the load of an power grid, wherein the energy storage comprises: a battery array; a bi-directional inverter unit; the bi-directional inverter system is configured to charge battery array using power from the power grid, or conversely, to transmit power from battery array to the power grid; a monitor system configured to detect the load, frequency and phase of the power grid, and control the bi-directional inverter system to charge battery array using power form the power grid, or conversely, transmits power from battery array to the power grid in accordance with the frequency and phase of the power grid so as to balance the load of the power grid, and meet the requirements during peak hours of electric power consumption.

Abstract: A power supply system includes a flywheel system electrically coupled to a DC bus for supplying electrical power between a power grid and a load. The flywheel system includes a flywheel coupled to rotate with a rotor of a motor/generator. A battery system is electrically coupled to the DC bus concurrently with the flywheel system.

Abstract: A power supply system includes a flywheel system electrically coupled to a DC bus for supplying electrical power between a power grid and a load. The flywheel system includes a flywheel coupled to rotate with a rotor of a motor/generator. A battery system is electrically coupled to the DC bus concurrently with the flywheel system.

Abstract: A flywheel interface system for line interactive power correction comprises a flywheel system that includes a flywheel coupled to rotate with a motor/generator. A passive rectifier is coupled to the flywheel system for converting alternating current generated by the flywheel system to direct current. An active inverter is coupled to the passive rectifier for converting the direct current from the passive rectifier to alternating current and to output the alternating current to the load. A motor drive is coupled to the motor/generator of the flywheel system for driving the motor/generator to rotate the flywheel, the motor drive including a second passive rectifier coupled to a second active inverter.

Abstract: The present disclosure relates to a power conditioning system that includes an electrical energy source interface for connecting to an electrical energy source and includes a load interface for connecting to a load. Between the electrical energy source interface and the load interface is a plurality of electrical energy storage devices. Also included in the power conditioning system of the present disclosure is a charging switching subsystem that electrically connects a grouping of electrical energy storage devices to the electrical energy source interface for a selected time interval. A grouping includes less than all of the individual electrical energy storage devices.

Abstract: A renewable energy enhanced apparatus includes a rechargeable buffer battery unit; a renewable energy generation unit for generating electric energy in the form of a cell; a rectifying and charging unit for converting AC into DC and charging the DC into the buffer battery unit; a power conversion and energy multiplication unit for converting electric energy into electric power, so as to couple out electric power and upgrade the power efficiency of a renewable energy power plant; and an electric power output unit for converting the electric power into low-frequency normal electric power for use. The renewable energy enhanced apparatus also includes an electrical damper for absorbing and recycling any anti-electromotive force and eddy current produced due to a load effect, in order to form another renewable energy for reuse, so as to upgrade the power efficiency of a renewable energy power plant.

Abstract: A system and method for digital management and control of power conversion from battery cells. The system utilizes a power management and conversion module that uses a CPU to maintain a high power conversion efficiency over a wide range of loads and to manage charge and discharge operation of the battery cells. The power management and conversion module includes the CPU, a current sense unit, a charge/discharge unit, a DC-to-DC conversion unit, a battery protection unit, a fuel gauge and an internal DC regulation unit. Through intelligent power conversion and charge/discharge operations, a given battery type is given the ability to emulate other battery types by conversion of the output voltage of the battery and adaptation of the charging scheme to suit the battery.

Abstract: A power compensator for an electric power transmission line. The power compensator includes a voltage source converter, a capacitor and an energy storage device. The energy storage device includes a high voltage battery having a short circuit failure mode, a first main switch and second main switch for disconnecting the battery from the capacitor, and a control unit for operating the first and second switch.

Abstract: A power supply system capable of smoothing photovoltaic generation output, and enabling time shift is provided. A power supply system including a DC power supply string in which a storage battery is connected in parallel to a DC power supply; and a DC/AC power conversion device for connecting the DC power supply string to a power system or a load is provided. A switch is connected between the DC power supply and the storage battery, where an output power of the DC power supply or a combined output power of the DC power supply and the storage battery is switched and supplied to the DC/AC power conversion device by the switch. The photovoltaic generation output is thereby smoothed, and time shift is enabled.

Abstract: Systems and methods to minimize signal loss and distortions with connections of audio sources and speakers are disclosed. Fiber optic cables are used instead of conventional cables. The audio signals are kept always in the analog domain, no matter if they are in optical or electric format. The strength of the audio signals can be controlled by a volume control unit. A small amplifier unit can either directly plugged to speakers are connected to the speakers via a short speaker cable. A preamplifier is no more necessary in the system.

Abstract: A power supply of personal computers equipped with a modular conversion circuit comprises a main circuit board, a conversion module board, a first conversion circuit and a first module slot located on the main circuit board, and a second conversion circuit and a second module slot located on the conversion module board. The first conversion circuit converts an input power to generate at least one output power. The first module slot outputs the output power. The second conversion circuit converts the output power and generates at least one conversion power. The second module slot outputs the conversion power to allow at least one external element to respectively electrically connect to the first module slot and the second module slot according to power requirement.

Abstract: A system for encouraging the use of renewable energy sources and suitable for the conservation of energy resources through the efficient management of energy storage and delivery includes connections to a power source, an energy storage subsystem, and a power grid. The system includes a power routing subsystem coupled to the source and grid, and adapted to operate in a bypass mode, in which energy is transferred from the source to the grid. The system includes a conversion subsystem coupled to the routing and storage subsystems, and switchable in substantially real-time between a storage mode, in which energy is transferred from the routing to the storage subsystem, and a generation mode, in which energy is transferred from the storage to the routing subsystem for delivery to the grid. The system also includes a controller for directing the modes based at least in part on a market factor.

Abstract: To provide a hybrid power supply device capable of properly controlling an operation of an engine generator and also preventing the device from increasing in size. The power supply device including an engine generator 11 and a capacitor 15 comprises: a DC bus La having the engine generator 11 and the capacitor 15 connected in parallel and supplying electric power to an outside; a step-up converter 13 provided between the DC bus La and the engine generator 11; and a control section 17 controlling the step-up converter 13 and regulating electric power supplied from the engine generator 11 to the DC bus La. Since both of the engine generator 11 and the capacitor 15 can supply electric power to the outside, the engine generator 11 can be downsized.

Abstract: A real time clock driving circuit for driving a real time clock includes a power source, a flash driving circuit, a switch circuit, and an electronic source. The flash driving circuit includes a booster, a charging capacitor, and a number of first resistor dividers. The anode of the charging capacitor and the first resistor dividers are coupled to an output of the booster. A node is defined between two of the first resistor dividers. The switch circuit includes a MOS transistor and a second resistor divider. The source of the MOS transistor is coupled to the node. The gate is coupled to the node via the second resistor divider. The drain is coupled to the power input of the real time clock. The power source is coupled to the input of the booster, the gate, and the power input of the real time clock.

Abstract: An energy storage system includes a storage device for storing energy generated by an energy generation system and for supplying the energy to an electric power system, and a controller for monitoring an output of the storage device and, when the output is within an abnormal output range, for controlling the output to be in a normal output range.

Abstract: A method and apparatus is provided for obtaining improved power generation efficiency by operating the primary power source, such as an ICE, only at the most efficient operating modes for a given engine, and simultaneously supplementing the power provided by the ICE with additional power stored in an accumulator, such as an ultra capacitor, as the load demands would otherwise cause that ICE to operate outside of the more efficient operating modes. In the case of a hybrid electric vehicle, the present invention would use banks of ultra-capacitors instead of batteries not just to start the ICE but also to supplement the electric power available for wheel drive motors when the ICE is in operation. According to the present invention, a control device would maintain the ICE at specific operational modes, either off, idle, or specific fuel efficient operating conditions over the entire range of vehicle operation.

Abstract: A control system for an energy production facility includes a plant controller for receiving an indication of a measured power output of the energy production facility that includes power generators and produces output signals. The system also includes a processing unit operably coupled to the plant controller and responsive to executable computer instructions when executed on the processing unit cause the plant controller to: create an output signal that causes an energy storage device to discharge in the event power reserves of the power generators can not met the requested ramp down rate; and create an output signal that causes the energy storage device to charge up in the event that the power capability of the power generators can meet the requested ramp down rate.

Abstract: The rechargeable battery abnormality detection apparatus is provided with an internal short circuit detection section (20b) that monitors rechargeable battery (1) voltage change when no charging or discharging takes place, and detects internal short circuit abnormality when battery voltage drop during a predetermined time period exceeds a preset threshold voltage; a degradation appraisal section (20d) that judges the degree of rechargeable battery degradation; and a threshold control section (20c) that incrementally increases the threshold voltage according to the degree of degradation determined by the degradation appraisal section (20d).

Abstract: Disclosed is a charge controlling semiconductor integrated circuit including: an electric current controlling transistor connected between a voltage input terminal and an output terminal to control an electric current which flows from the voltage input terminal to the output terminal; a power source monitoring circuit to detect status of input voltage of the voltage input terminal; and a transistor element connected between the voltage input terminal and a ground potential point, wherein a bypass capacitor is connected to the voltage input terminal; and the transistor element is turned on and the bypass capacitor discharges when the power source monitoring circuit detects the input voltage of the voltage input terminal is cut off.

Abstract: A dual-energy storage system is described, having two energy sources: (a) a fast-energy storage device (FES) such as an ultracapacitor, and (b) a long duration or steady power device, such as a fuel-cell or battery. A power converter or controller executes an energy management algorithm to determine when to provide bursts of additional power/current from the fast-energy storage device, and when to recharge the fast-energy storage device.

Abstract: According to one embodiment, there is provided a power-fluctuation reducing apparatus in a power generation system to control a converter connected to the power generation system and connected to secondary batteries. The power-fluctuation reducing apparatus includes adjusting direct current voltages output from the secondary batteries, respectively, detecting the directing current voltages output from the secondary batteries, respectively, controlling to adjust the direct current voltages output from the secondary batteries to make the direct current voltages uniform, based on the detected direct current voltages, and controlling the converter to reduce power fluctuations in the power generation system.

Abstract: A charging system is provided with a secondary battery, a charging current supplier for supplying a charging current to the secondary battery, an internal resistance detector for detecting the resistance value of the internal resistance of the secondary battery, and a charge controller for increasing the charging current to be supplied to the secondary battery by the charging current supplier as the resistance value detected by the internal resistance detector decreases.

Abstract: A reliable power conditioner comprises: a power converting circuit for converting direct-current power obtained from a direct-current power source to alternating-current power of a commercial power system; a charger/discharger circuit for charging the direct-current power obtained from the direct-current power source to an accumulator or discharging the direct-current power stored in the accumulator; a control circuit for controlling the power converting circuit and the charger/discharger circuit; and a power source selecting circuit for selecting at least one of first, second, and third power source circuits and supplying power to the control circuit.

Abstract: A dynamic voltage compensator for compensating voltage fluctuations in a three-phase power supply system that includes two dynamic voltage restorers (DVR), and two phases are selected arbitrarily from the three-phase power supply system with each selected power supply phase connected in series with one of said dynamic voltage restorers respectively. The dynamic voltage restorers are each used to monitor the voltage between the power supply phase it is connected to and the power supply phase unselected, and to restore the voltage to a normal level when voltage fluctuation is monitored, and at the same time the phase voltage of the unselected phase can also be restored to its normal level. In this way, it can ensure that the phase voltages of the three phases can be restored to the normal level by using only two sets of single-phase DVRs.

Abstract: Disclosed is a power supply (40) and a night vision device using the power supply (40). The power supply (40) comprises a battery (41), a power switch (42), a booster (43) for boosting a battery voltage provided by the battery (41) to an established voltage according to an operation of the power switch (42) and outputting a boost voltage, and a voltage selector (44) for comparing the voltage provided by the battery with a reference voltage (VR), outputting the boost voltage when the battery voltage is below the reference voltage (VR), and outputting the battery voltage when the battery voltage is beyond the reference voltage (VR). The night vision device is operable by voltages supplied from the power supply (40). According to the invention, stable voltages are supplied and batteries (41) are effectively used by supplying constant voltages in the case of using batteries (41) with different voltages, and hence, usage time of the night vision device is increased.

Abstract: A battery-charging device, having a maximum power point tracking (MPPT) function, for a stand-alone generator system includes a DC/DC power converter and a control circuit used to control the DC/DC power converter.

Abstract: A power interchange system for interchanging electric energy between a battery and an electric grid is provided The power interchange system includes a rectifier unit for converting alternating current of the electric grid into direct current for charging the battery; a grid measurement device for measuring an electric parameter of the electric grid, and a controller unit for adjusting the direct current for the charging the battery as a function of the electric parameter of the electric grid. Moreover a method for interchanging electric energy between a battery and an electric grid is provided.

Abstract: A motor drive circuit comprises positive and negative input terminals for connection of the motor circuit to a DC supply, a DC link filter connected between the input terminals: an electric motor having at least two phases, a plurality of motor drive sub-circuits, each connected to a respective phase of the electric motor and which each control the flow of current into or out of the respective phase of the motor that has been drawn from the supply through the DC link filter, and a switching means provided in the electrical path between the DC link filter and the electric motor drive sub-circuits, the switching means being movable between a closed position in which it connects the DC link filter to the motor drive sub-circuits, and an open position which isolates the DC link filter from the motor drive sub-circuits.

Abstract: A method and system of inverting DC energy stored within a vehicle to AC energy sufficient for supplying appliances or other devices that traditionally receive AC energy from a wall outlet. The inverting may be executed without feedback control in that switching operations used to controller boosting and inverting the DC energy are controller solely from inputs and without regard to the actual output.

Abstract: A power converter is provided for an energy harvesting system of a micro-scale electronic device. The power converter is configured to transfer electrical energy from an energy transducer to an energy storage device. The power converter illustratively includes a tree topology charge pump.

Abstract: When a DC/DC converter switches between a primary voltage control mode, a secondary voltage control mode, and a current limiting mode as operation modes, an I-term resetting processor outputs an I term depending on the duty ratio in the operation mode before being switched to a PID processor. The PID processor performs a PID control process based on the input I term. A drive duty ratio setter outputs a drive duty ratio immediately after the control mode switching, which is substantially equal to the duty ratio in the operation mode before being switched. As a result, the duty ratios in the operation mode before being switched and the operation mode after being switched are made continuous with respect to each other.

Abstract: A power supply system includes power storage devices, converters and a converter ECU controlling the converters. In temperature increase control of power storage devices, converter ECU determines an electric power transferred between the power storage devices via a main positive bus line and a main negative bus line as well as a transfer direction of the electric power, based on an allowable discharge power and an allowable charge power of each power storage device, and controls the converters to transfer the determined electric power between the power storage devices.

Abstract: An uninterruptible power supply includes an input switching circuit, an AC-to-DC converting circuit, a bus capacitor, an energy storage unit, a charging circuit, a DC-to-DC converting circuit, and a system control circuit. The input switching circuit receives an input AC voltage. The AC-to-DC converting circuit is used for converting the input AC voltage into a bus voltage. The energy storage unit is used for storing electric energy. The charging circuit is used for charging the energy storage unit. The DC-to-DC converting circuit is used for converting the energy storage unit connecting node voltage into a regulated DC voltage. The system control circuit is used for controlling operations of the uninterruptible power supply. When the uninterruptible power supply is initiated, the AC-to-DC converting circuit is disabled and the bus capacitor is charged by the DC-to-DC converting circuit under control of the system control circuit.

Abstract: A propulsion system comprising an electric drive, a DC link electrically coupled to the electric drive, and a first energy storage system electrically coupled to the electric drive, the first energy storage system comprising at least a high specific-power energy storage device is shown. The propulsion system further includes a second energy storage system, wherein a first terminal of the second energy storage system is electrically coupled to the electric drive through the DC link and a second terminal of the second energy storage system is coupled in series with a terminal of the high specific-power energy storage device. A multi-channel bi-directional boost converter is coupled to the first energy storage system and to the second energy storage system, wherein the connection between the terminal of the high specific-power energy storage device and the second terminal of the second energy storage system bypasses the multi-channel bi-directional boost converter.