85results about How to "Power supply" patented technology

An exemplary apparatus embodiment provides for controlling current supplied to solid state lighting, such as light emitting diodes. An exemplary apparatus comprises a memory adapted to store a plurality of current parameters; and a control circuit adapted to modulate an energizing cycle time period for providing a substantially constant DC average current to the solid state lighting in response to a selected current parameter of the plurality of current parameters. In an exemplary embodiment, the control circuit modulates a current provided to the solid state lighting in response to a predetermined minimum current level (IMIN) parameter and a predetermined peak current level (IP) parameter, such that the DC average current level (IO) is substantially proportional to one-half of a sum of a predetermined peak current level (“IP”) and a predetermined minimum current levelIM(IO∝IP+IMIN2).

A main power source (2) is, for example, an ordinary Pb battery and generates a voltage of 12-13 V. At the time of starting an engine, the main power source (2) supplies power to a starter (8a). The main power source (2) is given a higher priority than an auxiliary power source (3) to supply power to ordinary loads (8b). The auxiliary power source (3) is a high performance battery (e.g., Li ion battery), which has superior charge acceptance capability and better state detectability over the main power source (2). Furthermore, the auxiliary power source (3) has an internal resistance per unit capacity, which is smaller than that of the main power source (2), and generates a voltage of 9-12 V. A generator (1) is directly connected to the auxiliary power source (3). The auxiliary power source (3) stores regenerative power, which is generated by the generator (1) at the time of deceleration of a vehicle, and is used as a redundant power source for the main power source (2). The main power source (2) and the auxiliary power source (3) are connected to each other through a supply circuit (5), which has a DC / DC converter (4), and a second supply circuit 7, which has a switch (6).

Devices, systems, and methods for responding to emergency situations of infants, children and pets left unattended in a vehicle. The device comprises a control module for short range RF transmission housed in a lightweight, portable unit plugged into a vehicle accessory power outlet. The system may additionally comprise sensors in communication with the module to detect and trigger alarms, including: when a vehicle has been in a collision; whether a child has climbed out of a car seat while the vehicle is in motion; when the temperature within the vehicle is unsafe; whether an infant has been left unattended in a vehicle; and whether children are playing in a parked vehicle (e.g. trunk) in unsafe temperatures. The portable device may also be configured with an “SOS” button housed within a key fob, wristband, or necklace, to transmit GPS coordinates of the wearer in emergency situations (such as kidnappings).

A car jump starter having warning LED panel is provided. The car jump starter having warning LED panel is configured to deliver power to automobile battery of the car and the car jump starter having warning LED panel includes case and LED panel. The case includes output ends, input end, battery and output module. The output ends are disposed at one side of the case and the output ends are configured to be electrically connected with external electronic device. The input end is disposed at one side of the case and the input end is configured to be electrically connected with external power. The battery is disposed in the case. Then, the output module is electrically connected with the battery, and the output module is configured to deliver power to the automobile battery. Moreover, the LED panel is disposed on the case, and the LED panel includes multiple LED modules.

An integrated welder, generator and compressor unit that includes a housing that at least partially contains components of a welder, generator and compressor. An engine, an electric current generator, and an air compressor are at least partially mounted in the housing. The electric current generator is at least partially connected to the engine to be at least partially driven thereby. A drive connector at least partially connects the air compressor to the engine and / or electric current generator. The drive connector includes a gear box that has at least one gear.

The feedback IC is provided at the secondary side of the DC / DC converter and is coupled to the photo coupler. The error amplifier amplifies an error between a voltage detection signal according to an output voltage of the DC / DC converter and a target voltage, and draws a current according to the error from the input side of the feedback photo coupler via the photo coupler connection terminal. The abnormal detection circuit asserts an abnormal detection signal when an abnormal condition in a secondary side of the DC / DC converter is detected. The protection circuit is coupled to the photo coupler connection terminal, and acts on the feedback photo coupler via the photo coupler connection terminal so that a feedback operation by the error amplifier is invalid and an on-period of the switching transistor is shorten.

The invention relates to an apparatus (1) for powering an electrical consumer (3, 4, 5) via a data connection (6, 7, 8). The apparatus comprises a power supply (2) for supplying power to the electrical consumer via the data connection, a data receiving unit (9) for receiving data to be sent to the electrical consumer, and a controller (10) for activating the supply of power to the electrical consumer via the data connection, if data to be sent to the electrical consumer have been received and the supply of power to the electrical consumer is deactivated. The electrical consumer itself does therefore not need to receive power from the apparatus, in order to stay alert to be able to react on data connection activity, thereby reducing the power consumption.

There is provided an information processing apparatus that makes it possible to supply power only for a function desired by the user. A CPU causes a display unit to display a plurality of functions of the information processing apparatus in a manner being selectable. Information on at least one function selected from the plurality of functions via a screen displayed by the display unit is input. The CPU controls power supply relating to the input at least one function, based on the information on the at least one function.

A computer workstation including a switch, a monitor outlet and an input device tray. The input device tray is configured to support at least one computer input device. The switch is operationally associated with the input device tray such that when the input device tray is moved from its operational position, the switch is actuated. The monitor outlet is conductively connected to the switch such that when the switch is actuated, power to the monitor outlet is eliminated. The switch may also restore power to the monitor outlet when the input device tray is returned to the operational position.

A vehicular wind power generation device is provided for a vehicle including a bumper facing and guiding a windward current. The device includes a wind guiding hood with a wind guiding inlet and outlet communicating therewith, a directing-rotating element disposed at the wind guiding outlet, a power generator, and a power storage unit. The windward area of the wind guiding inlet is greater than that of the wind guiding outlet. The wind guiding inlet is connected to the bumper so as to receive the windward current blowing out of the wind guiding outlet, thus allowing the directing-rotating element to receive the windward current. The power generator is connected to the directing-rotating element and the power storage unit. The directing-rotating element is rotated by the windward current blowing toward the directing-rotating element while the vehicle is in motion. Eventually, the power generator generates power for providing rechargeable power for the vehicle.

Disclosed herein is a smart wearable lens mounted with an all-solid-state thin film secondary battery including a flexible substrate, a cathode current collector, a cathode, a solid electrolyte, an anode, and an anode current collector. The smart wearable lens mounted with the all-solid-state thin film secondary battery may be stably and continuously supplied with power and has a low self-discharge rate. In addition, the smart wearable lens may minimize aversion when humans are wearing the smart wearable lens and be suitably used for a curved lens, especially a micro-lens such as a contact lens.

The invention relates to a wind energy system having a rotor that can be driven by the wind, preferably having one or more rotor blades that can be adjusted in angle, a generator directly or indirectly connected with the rotor, to generate electric energy, which is configured as an asynchronous generator having a super-synchronous converter cascade in the rotor circuit, for slip-variable generator operation, so that power output of the generator is possible at variable speeds of rotation of the rotor, and an operation guide system that is configured to regulate the speed of rotation of the rotor, within a predetermined wind speed range. To improve the energy yield, it is provided that the super-synchronous rectifier cascade is configured in the rotor circuit for feeding the slip power into the network. For this purpose, the super-synchronous converter cascade has a DC voltage intermediate circuit having a high-set element. These are configured to switch, as IGBT switches, with a 180 degree phase shift relative to the rotor voltage.Furthermore, the invention relates to a method for regulating the power output of the wind energy system, in that the slip is regulated, whereby the slip power is fed into the network.

A residential electric grid (microgrid) is proposed as a distribution arrangement between a utility company and a group of individual residential consumers. The residential consumers are also viewed as “producers” of renewable energy and are defined as “prosumers”. An aggregator is used at the microgrid to negotiate with the utility on behalf of the group of prosumers, commanding a better price for excess electricity sold back to the utility (especially as part of a Demand Response (DR) program). Importantly, the microgrid is constructed to include energy storage capability at the microgrid. Therefore, the arrangement is capable of supplying power to the residential customers in the event of an outage at the macrogrid level, and also selling back the electricity to the utility as part of a DR program.

A residential electric grid (microgrid) is proposed as a distribution arrangement between a utility company and a group of individual residential consumers. The residential consumers are also viewed as “producers” of renewable energy and are defined as “prosumers”. An aggregator is used at the microgrid to negotiate with the utility on behalf of the group of prosumers, commanding a better price for excess electricity sold back to the utility (especially as part of a Demand Response (DR) program). Importantly, the microgrid is constructed to include energy storage capability at the microgrid. Therefore, the arrangement is capable of supplying power to the residential customers in the event of an outage at the macrogrid level, and also selling back the electricity to the utility as part of a DR program.

Method for operating a frequency converter of a generator The method relates to the operation of a frequency converter of a generator in particular of a wind energy turbine, in the event of a substantial grid voltage drop, wherein the frequency converter (10) comprises an AC / DC converter (20), to be connected to the generator (14), a DC / AC converter (22) to be connected to the voltage grid (18), and a DC link circuit (24) for connecting the AC / DC converter (20) to the DC / AC converter (22). The method comprises the step of reducing an output voltage of the DC link circuit (24) for increasing an output current of the DC / AC converter (22) and / or reducing the operation frequency of electronic switches (28) of the DC / AC converter (22) for increasing the output current of the DC / AC converter (22).

A secondary battery power control method controls power discharged from a secondary battery included in an interconnected system that supplies power to a power system, the interconnected system including a power generator that changes in output power, and an electric power storage-compensation device that includes a secondary battery, and a bidirectional converter that controls charging / discharging of the secondary battery, and compensates for a change in output power of the power generator. A temperature detection section that detects the temperature of the secondary battery is annexed to the secondary battery, and the maximum discharge power of the secondary battery is limited using the bidirectional converter when the temperature of the secondary battery detected by the temperature detection section has exceeded a preset temperature.

An architecture of a propulsion system of a multi-engine helicopter is disclosed, comprising turboshaft engines that are connected to a power transmission gearbox. It comprises: a hybrid turboshaft engine that is capable of operating in at least one standby mode during a stable flight of the helicopter; a pack for quickly restarting said hybrid turboshaft engine in order to bring said engine out of said standby mode and to reach a nominal operating mode; an auxiliary power unit that is connected to said electrotechnical restart pack by means of a first AC / DC converter and is capable of providing said restart pack, on demand, with power required for bringing said hybrid turboshaft engine out of said standby mode.

The present invention focuses on the development of a high-efficiency single-stage bidirectional converter with multi-input power sources. In the present invention, it takes a three-winding coupled inductor as the main component of energy transmission, and utilizes only two power semiconductor switches to accomplish the multi-input function. According to the designed switching conditions, this circuit could be operated at discharge, charge and standalone states to simplify conventional structure in which multiple converters are used in boosting voltage and then connected in parallel to supply power. Moreover, the coupled inductor as the principal part of this circuit has high-voltage gain property, and the present invention fully utilizes the winding voltage in the high-voltage side to further increase the corresponding voltage gain superior to that in the conventional coupled-inductor strategy. This property is helpful to solve the power conversion problem caused by clean energies with inherent low-voltage characteristics. In addition, all switches and diodes have favorable voltage-clamped effects so that the voltage spikes induced by the leakage-induction energy can be alleviated effectively, and there are no high reverse-recovery currents within diodes because the leakage induction can restrain instantaneous changes in the current. Furthermore, the present invention has a charging route of low-voltage conversion without adding additional components, avoiding the power losses induced by the multistage conversion in the traditional auxiliary power systems, and utilizes the synchronous rectification technique to decrease the conducting losses.

A refueling facility (200) according to the present invention comprises a refueling source (210) for refueling a fuel cell vehicle with fuel, a power supply source (220) for supplying power to the fuel cell vehicle, and a controller (230) for controlling refueling and power supply from the refueling facility (200) to the fuel cell vehicle. The forward end of a refueling path (211) and that of a power supply path (221) are integrated into a supply connector (240). The refueling and the power supply are achieved by connecting the supply connector (240) to a fuel receptacle (110) of the fuel cell vehicle.

An integrated welder, generator and compressor unit that includes a housing that at least partially contains components of a welder, generator and compressor. An engine, an electric current generator, and an air compressor are at least partially mounted in the housing. The electric current generator is at least partially connected to the engine to be at least partially driven thereby. A drive connector at least partially connects the air compressor to the engine and / or electric current generator. The drive connector includes a gear box that has at least one gear.

An energy storage device is disclosed that includes capacitor cells of a first type having a first internal resistance and 0 capacitor cells of a second type having a second internal resistance which is higher than the first internal resistance.

A power conversion apparatus including a synchronous rectification (SR) transistor, a SR controller and a snubber circuit is provided. The SR controller is coupled to the SR transistor to control the SR transistor. A ground terminal of the SR controller is coupled to a source terminal of the SR transistor, and a power terminal of the SR controller is coupled to a system voltage. A first terminal of the snubber circuit is coupled to a drain terminal of the SR transistor. A second terminal of the snubber circuit is coupled to the power terminal of the SR controller. The snubber circuit obtains power from the drain terminal of the SR transistor and provides the system voltage accordingly.

Emergency start-up device for a turboshaft engine of a helicopter, comprising: a hydraulic motor which is mechanically connected to said turboshaft engine; a hydropneumatic store which is connected to said hydraulic motor by a hydraulic circuit for supplying pressurised liquid to said hydraulic motor; and a hydraulic valve which has controlled quick opening, arranged on the hydraulic circuit between said store and said hydraulic motor, and is suitable for being placed on command at least in an open position in which the liquid can supply said hydraulic motor, or in a closed position in which said hydraulic motor is no longer supplied with pressurised liquid.

Power required for a printing operation can be supplied while supplying power to a connected external device. A printer 1 connects to a smart device 2, and has: a power circuit 14; a USB interface 15 capable of supplying power to the smart device while communicating by wire with the smart device 2; a print unit 16 that prints; and a controller 11 that controls the print unit 16 to print in a power conservation mode when information instructing printing by the print unit 16 is received by the interface 15 from the smart device 2 while supplying power from the power circuit 14 to the smart device 2.

There is provided a wireless power supplying device and method. The device includes a control part and at least one transmitting part connected with the control part. The control part includes a control circuit and a power supply module. The control circuit is used to determine the power requirement of the transmitting part connected with the control part and control the power supply module to transmit an electrical signal satisfying the power requirement to the transmitting part. The transmitting part generates a magnetic field based on the electrical signal and supplies power to a load of a receiver. The wireless power supply device and method enable each coil to generate electromagnetic induction with desired power, to supply power for the receiver reasonably, and reduce the number and the complexity of the transmitting part.

The present disclosure provides a controller for a power converter that converts input power to a prescribed form and outputs the power by switching a semiconductor switching device ON and OFF and that has an output circuit including a filtering reactor on an output side, the controller including: a carrier calculating unit that generates a carrier having prescribed frequencies for generating a control signal that switches the semiconductor switching device ON and OFF, wherein the carrier calculating unit generates the carrier such that a carrier frequency at phase angles where ripple components in a current flowing through the reactor are relatively high in magnitude, which is defined as a high ripple carrier frequency, is higher than a carrier frequency at phase angles where the ripple components are relatively low in magnitude, which is defined as a low ripple carrier frequency.

The present disclosure relates to a track structure capable of supplying power, which comprises a track module, a first conducting module, a second conducting module, at least a sliding module, a first electrical transmission module, and a second electrical transmission module. Each track module is provided for disposing an electronic device. The electronic device slides along the track module via the sliding module. The first electrical transmission module is connected to the electronic device, and a first electrode and a second electrode of the sliding module. The first and second electrodes contact the first and second conducting modules, respectively. The second electrical transmission module is connected to the first and second conducing modules and connected to a power supply. The power supply supplies power and transmit the power to the electronic device through the track structure.

The present disclosure relates to a track structure capable of supplying power, which comprises a track module, a first conducting module, a second conducting module, at least a sliding module, a first electrical transmission module, and a second electrical transmission module. Each track module is provided for disposing an electronic device. The electronic device slides along the track module via the sliding module. The first electrical transmission module is connected to the electronic device, and a first electrode and a second electrode of the sliding module. The first and second electrodes contact the first and second conducting modules, respectively. The second electrical transmission module is connected to the first and second conducing modules and connected to a power supply. The power supply supplies power and transmit the power to the electronic device through the track structure.