Abstract: A generator or another type machine includes a controlled field alternator, a segmented waveform converter, and a controller. The controlled field alternator is configured to generate a polyphase signal. The segmented waveform converter includes multiple switches connected between the polyphase signal of the controlled field alternator and an output filter. The controller is configured to provide a control signal for the switches based on measured electrical quantities associated with the output filter and provide a field current control signal to the controlled field alternator.

Abstract: The invention relates to a heavy-current transformer (12), in particular for a power source (10) in order to provide a welding current of a resistance welding device (1), with at least one primary winding (13) and at least one secondary winding (14) with center tapping, and to a transformer element, a contact plate (29) and a secondary winding (14) for such a heavy-current transformer (12) as well as a method for the manufacturing thereof. For reduction of losses and improvement of efficiency, at least four contacts (20, 21, 22, 23) are provided to form a multi-point contacting, said contacts (20, 21, 22, 23) being formed by four contact faces within which the at least one primary winding (13) and the at least one secondary winding (14) are arranged in a series/parallel connection.

Abstract: A master generator is configured to use a duty upper limit value and a duty lower limit value to perform duty restriction processing on a PWM signal in continuous Y cycles out of generated X cycles, and transmit the PWM signal after the restriction processing to a slave generator. The slave generator is configured to receive the PWM signal after the restriction processing transmitted from the master generator as a received PWM signal, and determine that a reception abnormality exists when the received PWM signal is received as a signal representing a duty less than the duty lower limit value or a duty more than the duty upper limit value in continuous (X?Y+1) cycles.

Abstract: An electronic device comprising: a battery having a plurality of cells that are connected in series; a circuit electrically connected to the battery; and a conductive pattern electrically connected to the circuit, wherein the circuit is configured to: receive a first signal wirelessly from a first external device by using the conductive pattern, charge at least some of the plurality of cells in the battery by using a power of the first signal, generate a second signal by changing a first voltage, that is produced by at least two of the plurality of cells in the battery, into a second voltage that is lower than the first voltage, and wirelessly transmit the second signal to a second external device, the second signal being transmitted by using the conductive pattern.

Abstract: Inverter circuit operation for managing power factor changes is provided. Various modes of switch timing may be employed near zero-voltage crossings. Inverter switch timing may change during a cycle such that one timing strategy is employed approaching or leaving a zero-voltage crossing while another timing strategy is employed at other times of the cycle.

Abstract: An electrical drive system for an aircraft includes: at least one first and one second electrical direct voltage sources for supplying a direct voltage, and a first and a second electrical machine modules configured to convert electrical alternating voltage into mechanical movement and vice versa. The first and second modules are connected to a first and a second power inverters, respectively. The first and second inverters are connected in series and the first and the second direct voltage sources are connected in series to generate an overall direct voltage to which the inverters are connected. The power inverters each has one voltage measuring device for measuring the power inverter direct voltage present at the respective inverter and a power inverter control device for controlling the operation of the inverters in accordance with the power inverter direct voltage.

Abstract: A wireless power receiver including at least one antenna configured to: receive radio frequency (RF) waves from a wireless power transmitter, and convert energy from the received RF waves into an alternating current. The receiver further including a rectifier coupled to the at least one antenna and configured to rectify the alternating current into a direct current. The receiver further including a charger configured to: receive the direct current from the rectifier, and control, via circuitry included in the charger, distribution of current using one or more of a plurality of conduction paths: (i) to a load, and (ii) to and from at least one storage element coupled with the charger. The circuitry is configured to select one or more of the conduction paths based at least in part on: a respective power requirement of the load; a respective power requirement of the storage element and the direct current.

Abstract: The embodiments described herein include a transmitter that transmits a power transmission signal (e.g., radio frequency (RF) signal waves) to create a three-dimensional pocket of energy. At least one receiver can be connected to or integrated into electronic devices and receive power from the pocket of energy. The transmitter can locate the at least one receiver in a three-dimensional space using a communication medium (e.g., Bluetooth technology). The transmitter generates a waveform to create a pocket of energy around each of the at least one receiver. The transmitter uses an algorithm to direct, focus, and control the waveform in three dimensions. The receiver can convert the transmission signals (e.g., RF signals) into electricity for powering an electronic device. Accordingly, the embodiments for wireless power transmission can allow powering and charging a plurality of electrical devices without wires.

Abstract: A method includes receiving a periodic voltage by a power converter comprising a plurality of converter cells and, in a series of time frames of equal duration, alternating an average power level of power converted by at least one converter cell of the plurality of converter cells. Each of the series of time frames corresponds to a time period between sequential zero crossings of the periodic voltage.

Abstract: The present invention may provide various electric receiver arrangements which may be used to provide wireless power transmission using suitable power transmission techniques such as pocket-forming. In some embodiments, receivers may include at least one antenna connected to at least one rectifier and one power converter. In other embodiments, receivers including a plurality of antennas, a plurality of rectifiers or a plurality of power converters may be provided. In addition, receivers may include communications components which may allow for communication to various electronic equipment including transmitters, phones, computers and others. Lastly, various implementation arrangements may be provided for including receivers in electronic devices.

Abstract: Provided are a method and a device for controlling an operation of an inverter. The method includes: determining whether a direct current side voltage of the inverter is greater than an operation voltage setting threshold; and if no, controlling the inverter to operate according to a five level control strategy; and if yes: adjusting the direct current side voltage by using a maximum power tracking algorithm; adjusting linearly a floating capacitor voltage of the inverter based on the adjusted direct current side voltage; determining whether the adjusted floating capacitor voltage is in a preset range; and if yes, controlling the inverter to operate according to a five level control strategy; and if no, controlling the inverter to operate according to a seven level control strategy.

Abstract: A method and apparatus estimating a state of a battery are provided. A battery life estimation apparatus may charge a battery using a normal charge rate (C-rate) during a charging interval of a charging cycle and a low charge rate (C-rate) in a low-rate charging interval of the charging cycle, may compare a determined change in an electrical physical quantity of the battery over time to a reference curve, corresponding to a life of the battery, for an initial state of the battery, in the low-rate charging interval, and may estimate the life of the battery based on a result of the comparing.

Abstract: A system and related methods for evaluating a component using a reference feature and a replicate of the reference feature. The component has an exterior surface with a reference feature thereon. The method includes determining an initial condition of the reference feature, subjecting the component to at least one duty cycle after determining the initial condition, determining a subsequent condition of the reference feature after the at least one duty cycle while the component is in a service position, and forming a replicate of the reference feature while the reference feature is in one of the initial condition or the subsequent condition. One of the initial condition or the subsequent condition may be determined based on the replicate of the reference feature.

Abstract: A soft start-up method is provided comprising: producing an initialization signal on a primary winding side of a transformer; using a comparison of the initialization signal with a signal having a value indicative of a current in the primary winding to control a switch operatively disposed between a voltage source and the primary side; transmitting the initialization signal over a galvanically isolating communication medium from the primary side to a secondary winding side of a transformer; at the secondary winding side, comparing a reference voltage signal with a secondary winding output voltage signal; in response to a match between the reference signal and the secondary winding output voltage signal, transmitting a comparison voltage signal over the galvanically isolating communication medium from the secondary side to the primary side; at the primary side, comparing the initialization signal with the transmitted comparison voltage signal; and in response to a match between the initialization signal the an

Abstract: A controlled-power delivery system may operate with RF waves for supplying continuous and suitable power to a load. The controlled-power delivery system may include one or more receiving antennas, one or more rectifiers, a first boost converter, a charger, a storage element, and a second boost converter. The first boost converter may step up the rectified DC voltage obtained from the receiving antenna and rectifier to supply a suitable voltage level that can be used for charging the storage element. The second boost converter may increase the voltage from the storage element to a suitable level that may satisfy the power requirements of the load. The charger in conjunction with the first and second boost converters may be configured to allow a plurality of modes of operation for delivering power to the load and charging the storage element.

Abstract: The present disclosure describes a plurality of transducer arrangements that may be suitable for wireless power transmission based on single or multiple pocket-forming. Single or multiple pocket-forming may include one transmitter and at least one or more receivers, being the transmitter the source of energy and the receiver the device that is desired to charge or power. The transducer arrangements may vary in size and geometry, and may operate as a single array, pair array, quad arrays or any other suitable arrangement, which may be designed in accordance with the desired application.

Abstract: A protective device and a protective system for a battery assembly are provided. The battery assembly comprises N cells, and the protective device includes: a constant current source module comprising M (1<M?N) first constant current sources connected in parallel with M cells in the N cells respectively, and configured to generate an output current according to a voltage of the connected cell; a voltage sampling module including N voltage sampling units connected in parallel with the N cells respectively and configured to output a sampling voltage; a determining module connected with the voltage sampling module and configured to generate a first disconnection signal when the sampling voltage output from any voltage sampling unit reaches a predetermined value; and a protective control module, connected with the determining module and configured to control the battery assembly to turn off according to the first disconnection signal.

Abstract: Disclosed herein is an antenna apparatus for use in harvesting ambient radio frequency, RF, energy. The apparatus comprises one or more RF antenna components arranged to receive RF energy for producing electricity. The one or more RF antenna components comprise a plurality of frequency filtering components, each frequency filtering component being arranged to filter a respective frequency band of the received RF energy. Also disclosed herein is an apparatus comprising a rectifying circuit arranged to convert a variable electrical signal received at an input from an associated antenna into a direct current electrical signal for supplying to an electrical energy storage unit, the antenna for use in harvesting ambient radio frequency, RF, energy. The apparatus also comprises a power management module having an input arranged to receive the direct current and control supply of the direct current to the electrical energy storage unit.

Abstract: A system and method for automated shutdown, disconnect, or power reduction of solar panels. A system of solar panels includes one or more master management units (MMUs) and one or more local management units (LMUs). The MMUs are in communication with the LMUs with the MMUs and LMUs “handshaking” when the system is in operation. The MMUs are connected to one or more controllers which in turn are connected to emergency detection sensors. Upon a sensor detection of an emergency, the associated MMU is notified which in turn instructs associated LMUs to take appropriate action. In the event that communication with the MMUs has been cut off, the LMUs take the initiative to shut down, disconnect, or reduce the output of associated string(s) of solar panels.

Abstract: A power supply system includes data circuitry as well as power circuitry to generate DC power for use by a portable electronic device having a rechargeable battery. The DC power, ground and two signaling lines are provided in a power supply connector which detachably mates with an electronic device power input port. In response to a first signal from the electronic device transmitted over one of the signaling lines, the data circuitry provides an analog signal to the electronic device over the other signaling line. The electronic device determines a parameter level, such as a current level, of the analog signal, and based on the determined parameter level controls charging of its battery.

Abstract: Systems and methods including a wireless device in communication with, controlling, and providing streaming media to a worksite audio device. The worksite audio device, such as a radio, includes a rugged structure enabling its use on construction sites. The worksite audio device is powerable via a power tool battery pack or AC source, and includes a charger circuit to charge an inserted power tool battery using power from the AC source. The worksite audio device is in communication with an external wireless device, such as a smart phone. The worksite audio device outputs to the smart phone battery status information, such as temperature and state of charge, as well as other information about the audio device. The smart phone displays the status information received from the audio device. Additionally, a user may control the audio device via a graphical user interface of the smart phone.

Abstract: System for configuring and powering a wireless batteryless device, the system comprising: a wireless batteryless device (A) comprising: a built-in harvester (12) for harvesting energy from a first energy source, for example ambient energy, means for communicating wirelessly, —and an external device (B) comprising: —a second power source (16), —means (17) for converting energy supplied by the second power source into energy suitable for being harvested in the harvester of the batteryless device, means (18) for wirelessly supplying the batteryless device with the converted energy via the built-in harvester, and means for communicating with the batteryless device. The invention also relates to an external device therefore, and a method for configuring and powering a batteryless device.

Abstract: Provided are balancing device and method which can achieve a balancing function between energy storage units connected in series using a small number of switch elements, thereby reducing the manufacturing cost and size and enabling various balancing modes. The balancing device for balancing between a plurality of energy storage units a battery module, in which the energy storage units are connected in series, includes: a transformer; and a switch network comparing a cell switch unit, a polarity switch unit, and au auxiliary switch unit, wherein the auxiliary switch unit includes: a first auxiliary switch unit for connecting a second common node to one terminal of the secondary winding of the transformer; and a second auxiliary switch unit for connecting a first common node to the other terminal of the secondary winding of the transformer.

Abstract: A photovoltaic system has a plurality of subsystems, each with a photovoltaic generator and an associated inverter. The inverter has a control element for setting the maximum power point of its subsystem. A battery is connectible in parallel with the photovoltaic generator. The inverters are connectible to a power grid, which is operated by a utility operator. When a control device receives an emergency signal from the utility operator indicating impending instability of the grid, the following is initiated: If the battery voltage is above the current voltage as set by the MPP control element, the battery is immediately connected to the input of the inverter while the generator remains connected to the inverter. If the battery voltage is below the current voltage the battery connection is delayed until the MPP control element has adjusted the voltage. Then the voltage is further lowered to generate a discharge current from the battery.

Abstract: The supply of an electric equipment material (5), such as a telecommunications station, is implemented in priority by an intermittent power source (6), and makes use as much as possible of batteries (31) and as little use as possible of a fuel cell electrochemical generating unit (4) for increasing the life of the latter. The equipment and the generating unit are supplied by the source so as to produce and stock fuel in the generating unit when the power of the source exceeds the operation power of the equipment and the batteries are in full charge. Destocking the fuel in the generating unit, supplying the equipment by the generating unit and charging the batteries by the generating unit are carried out as soon as the power of the batteries is at a discharge threshold and until the batteries reach the full charge.

Abstract: The disclosed invention provides examples of preferred embodiments including systems for harvesting energy from variable output energy harvesting apparatus. The systems include energy harvesting apparatus for providing energy input to a switched mode power supply and a control loop for dynamically adjusting energy harvesting apparatus input to the switched mode power supply, whereby system output power is substantially optimized to the practical. Exemplary embodiments of the invention include systems for harvesting energy using solar cells in boost, buck, and buck-boost configurations.

Abstract: A high-voltage, AC power supply for an electrostatic discharge system comprises a chassis shaped to define an interior cavity, a high-voltage transformer for increasing the voltage received from an external power source, and an output connector module in electrical connection with the transformer for delivering the increased voltage to a high-voltage load, such as one or more anti-static bars. The transformer and the output connector are independently mounted onto the chassis within the interior cavity in a spaced apart relationship and are electrically coupled through one or more flying lead connectors in order to facilitate assembly. During operation, a resistive damping component in the output connector module regulates the output voltage and secondary current delivered to the load in order to render the power supply less susceptible to dielectric breakdown from partial discharge.

Abstract: A vibration energy detection apparatus has a vibration power generator installed in an inspection object that converts vibration energy generated in the inspection object into power, an electric storage unit that stores generated power of the vibration power generator, a voltage monitor that monitors a storage voltage of the electric storage unit, a discharge controller that discharges electric storage energy of the electric storage unit when the storage voltage of the electric storage unit exceeds a predetermined storage voltage, and a vibration energy calculator that calculates the vibration energy generated in the inspection object based on the number of formation times of an electric storage state of the electric storage unit. The electric storage state is continuously or intermittently formed by the discharge by the discharge controller.

Abstract: The various embodiments herein provide a system and method for providing short range wireless communication. The system comprises a transmitting end, a first electrical circuitry provided at the transmitting end to generate a propagating EM wave on a connected wire according to an input data signal, a transmitting antenna provided at the transmitting end designed to maximize scattering of the propagating EM wave, a receiving end, a receiving antenna provided at the receiving end to detect the scattered EM wave and a second electrical circuitry provided at the receiving end to recover the input data signal from the signal received by the receiving antenna. Here a wireless link is established by means of the scattered EM waves generated by near field emissions from a surface of the transmitting antenna.

Abstract: Techniques and devices related to power adapters for mobile devices and, in particular, small form factor power adapters that allow a voltage droop during a power pulse exceeding a maximum output of the power adapter are discussed. For example, a small form factor and low voltage power adapter may include an adapter output power protection control that limits an output of the power adapter in response to a power pulse exceeding a maximum output of the power adapter.

Abstract: A switched mode power supply may include circuitry configured to output a bias signal that turns off and on switching circuitry of the switched mode power supply. The circuitry may wait for a first time period determined by the bias signal, and output the bias signal to turn off the switching circuitry when the time period expires. In addition or alternatively, the circuitry may begin waiting for a second time period when the bias signal turns off the switching circuitry. The circuitry may turn on the switching circuitry either when energy in inductive storage circuitry is depleted or when the second time period expires.

Abstract: A flux-balancing method for an isolated bidirectional converter uses a flux-balancing control loop and a current-balancing control loop to control the DC components in the primary and secondary currents. The flux-balancing control loop keeps the average magnetizing current substantially zero and the current-balancing control loop keeps the average primary current or the average secondary current substantially zero. The flux-balancing loop adjusts the duty ratio of a set of switches in a corresponding bridge. The adjusted duty ratio is designed to substantially eliminate the DC component in the magnetizing current. The current-balancing loop keeps the average primary current and the average secondary current substantially zero, and adjusts the duty ratio of the switches in a corresponding bridge to eliminate the corresponding DC component.

Abstract: A wireless transformer system comprises a primary side of AC/DC converter with power factor correction and a secondary side of a half bridge resonant DC/DC converter to power a device wirelessly.

Abstract: A solar photovoltaic monitoring system for monitoring and controlling a solar photovoltaic inverter is provided. The system includes a wireless transceiver coupled to a solar photovoltaic inverter that includes a device monitor for monitoring and controlling the inverter. The device monitor generates monitoring data defining a status of the system and transmits the data by using the transceiver coupled to the inverter. The system also includes a wireless repeater for receiving data from the inverter and retransmitting the data and a transceiver coupled to a gateway capable of communicating the received retransmitted data to a monitoring station. The gateway also transmits control data received from the monitoring station. The repeater receives control data from the gateway and retransmits data to the inverter. The inverter receives the retransmitted control data and controls its operation based on the received data.

Abstract: A manufacturing method for a reactor in which resin for covering at least a part of a coil is formed integrally with the coil comprise a step of manufacturing a molded product and a step of attaching a temperature sensor such that the temperature sensor is opposed to a first face. The step of manufacturing the molded product includes following i) to iii): i) arranging the reactor in a cavity space for injection-molding of resin; ii) fixing the coil with the surface of a mold brought into contact with the first face and a second face located at positions which sandwich the coil on the periphery of the coil; and iii) injecting resin into the cavity space to cover at least a coil surface around the first face and a coil surface around the second face with the resin, with the first face and the second face exposed.

Abstract: Provided is a method for suppressing a circulating current in a modular multi-level converter for a high voltage direction-current (HVDC) transmission system. The HVDC transmission system converts an alternating current (AC) into a direct current (DC) and vice versa, transmits energy using a DC cable, and including a modular multilevel converter generating a high voltage source by stacking a plurality of sub-modules in series. In the circulating current suppression method, a circulating current (idiffj; j=a,b,c) of a,b,c phase in an abc 3-phase stationary reference frame, a DC current (idc) flowing in a DC cable, a current reference value (i*dc) of a DC component that needs to flow in the DC cable are inputted. The circulating current (idiffj) of the a,b,c phase is controlled to become zero. A compensation value (V*diffj) for suppressing a harmonic component of the circulating current is outputted.

Abstract: Charger apparatus for charging a rechargeable device, the charger including a casing, AC pins, a charging circuit and a DC plug, the casing having a slim shape, the AC pins receiving AC voltage from an AC voltage source, the AC pins being rotatably coupled with the casing for rotating from a stowed configuration in which the AC pins conform to the slim shape of the casing, to a charging stance in which the AC pins extend normally posteriorly from the casing, the charging circuit transforming the AC voltage to DC voltage adapted for charging the rechargeable device and providing the DC voltage to a charging port of the rechargeable device, the DC plug moving from a stowed configuration in which the DC plug conforms to the slim shape of the casing, to a charging stance in which the DC plug is exposed from the casing.

Abstract: A portable power transfer device has input connectors and output connectors which can be used to transfer power from a first electronic device to a second electronic device. The connectors are housed in a main enclosure, which also has an auxiliary USB port. An internal power source is also housed in the main enclosure. The second electronic device can be charged through an output connector or a USB cable connected to the auxiliary USB port by draining power from the first electronic device or from the internal power source. A voltage regulation circuit is electrically connected between the input connectors and the output connectors, as well as between the auxiliary port and the input connectors. The voltage regulation circuit ensures a desirable output voltage. In addition to power transfer, the power transfer device enables data transfer when using USB connectors and ports to connect the first electronic device and the second electronic device.

Abstract: A system and method for automated shutdown, disconnect, or power reduction of solar panels. A system of solar panels includes one or more master management units (MMUs) and one or more local management units (LMUs). The MMUs are in communication with the LMUs with the MMUs and LMUs “handshaking” when the system is in operation. The MMUs are connected to one or more controllers which in turn are connected to emergency detection sensors. Upon a sensor detection of an emergency, the associated MMU is notified which in turn instructs associated LMUs to take appropriate action. In the event that communication with the MMUs has been cut off, the LMUs take the initiative to shutdown, disconnect, or reduce the output of associated string(s) of solar panels.

Abstract: A harmonic predictor for a wind farm comprising at least two wind turbines, each having a generator with a converter for generating electrical energy. The harmonic predictor determines the harmonic component expected from the wind farm in order to limit the harmonic component to a harmonic limit. The harmonic predictor comprises a calculation module, an iteration module and a summing module. The calculation module calculates a complex mean value over at least one period of the harmonic component of one of the wind turbines and determines a first equivalent vector therefrom. The iteration module successively connects the calculation module to at least one other of the wind turbines to form at least one second equivalent vector. The summing module sums the equivalent vectors to form a total vector and compares the total vector with the harmonic limit.

Abstract: There is disclosed a large scale energy storage system enabling balanced control of inverters, the large scale energy storage system including an inverter controller comprising a PWM generation circuit configured to generate a reference PWM signal and a first O/E converter configured to convert the reference PWM signal transmitted from the PWM generation circuit into an optical signal and to output the optical signal, and a plurality of PCS inverters configured to output a grid voltage, each of the PCS inverters comprising a second O/E converter embedded therein to convert the PWM signal and the optical signal output from the inverter controller into an optical signal and a plurality of inverter modules.

Abstract: A power system for an alternating current power bus includes an electret operatively associated with the alternating current power bus. The electret includes an output having an alternating current voltage when the alternating current power bus is energized. A rectifier includes an input electrically interconnected with the output of the electret and an output having a direct current voltage responsive to the alternating current voltage of the output of the electret. A powered device includes an input electrically interconnected with the output of the rectifier. The powered device is powered responsive to the direct current voltage of the output of the rectifier.

Abstract: An electricity generator comprises a core having an interior chamber having a top portion and a bottom portion. The core is held at a vacuum. A frequency generator is provided for introducing and inputting electromagnetic waves into the interior chamber. A point source waveguide tube is provided to connect the frequency generator and the core, and the point source waveguide tube allows the passage of electromagnetic waves from the frequency generator into the interior chamber of the core. In addition, a plurality of electrodes is provided which extend into the interior chamber and conduct the flow of electricity away from a lining on the interior chamber.

Abstract: A tuning circuit in an RFID tag may be used to match antenna and integrated circuit (IC) impedances to maximize the efficiency of IC power extraction from an incident RF wave. The tuning circuit, which requires less power to operate than the IC, adjusts a variable impedance to improve the impedance matching between the IC and the tag antenna and thereby increase the IC power extraction efficiency. The IC may begin operating according to a protocol when it extracts sufficient power from the RF wave or when an optimal impedance matching and power transfer is achieved.

Abstract: A power system includes a power semiconductor devices; a control circuit outputting first firing signals each being for a corresponding power semiconductor device, and outputting first activation response signals each being associated with a corresponding power semiconductor device. A first interface circuit cooperates with the control circuit to input a first serial signal and output the first firing signals, and to input the first activation response signals and output a second serial signal. A second interface circuit cooperates with a controller to input the second serial signal, to output to the controller second activation response signals corresponding to the first activation response signals, to input from the controller second firing signals corresponding to the first firing signals, and to output the first serial signal. The controller controls the power semiconductor devices with the second firing signals, and monitors the power semiconductor devices with the second activation response signals.

Abstract: A method of determining a parameter includes providing a sensor that provides a sensor analog voltage. A peak detecting circuit for detecting a peak voltage in the sensor analog voltage is also provided. The sensor analog voltage is provided to the peak detecting circuit, and the peak voltage is detected. A microprocessor is provided in sleep mode and is awakened once the circuit detects the peak voltage. The microprocessor samples and records the peak voltage and the microprocessor goes back to sleep.

Abstract: A downhole power supply is provided that includes an energy storage adapted to operate at high temperatures, and a rotary inertial energy generator to capture the shock energy and vibrational energy of downhole movement of the drill string. The energy storage may include at least one ultracapacitor.

Abstract: A power system for an alternating current power bus includes an electret operatively associated with the alternating current power bus. The electret includes an output having an alternating current voltage when the alternating current power bus is energized. A rectifier includes an input electrically interconnected with the output of the electret and an output having a direct current voltage responsive to the alternating current voltage of the output of the electret. A powered device includes an input electrically interconnected with the output of the rectifier. The powered device is powered responsive to the direct current voltage of the output of the rectifier.

Abstract: An output converter includes a DCDC conversion section, a secondary side voltage/current monitoring section detecting a power from the DCDC conversion section, a maximum operation point control section determining what voltage is to be set by the DCDC conversion section so that the power detected by the secondary side voltage/current monitoring section is maximum, a DCDC short-circuit switch via which a current from a module bypasses the DCDC conversion section to outside, a primary side voltage/current monitoring section measuring the current from the module, a module short-circuit switch switching between a state where a secondary side cathode and a secondary side anode are short-circuited and a state where they are not short-circuited, the maximum operation point control section causing the DCDC short-circuit switch and the module short-circuit switch to switch.

Abstract: The present disclosure may provide wireless power system used in a wireless powered house for providing power and charge to a plurality of mobile and non-mobile devices. Wireless powered house may include a single base station which may be connected to several transmitters, the base station may manage operation of every transmitter in an independently manner or may operate them as a single transmitter. Wireless powered house may include a variety of protocols for powering devices; such protocols may be customized by the user.