Abstract: The DC voltage conversion circuit includes a booster circuit and a protection circuit. When the booster circuit is under EOS test, a detection circuit of the protection circuit obtains a second detection voltage from the voltage on the VGH line. A first adjustment circuit produces a third signal based on the comparison result of the second detection voltage and a reference voltage. A second adjustment circuit produces a fourth signal based on the comparison result of the second detection voltage and the reference voltage. The third and fourth signals adjust the equivalent resistances of a first and a second feedback circuits to a third and a forth equivalent resistances, respectively. Through the adjustment of the equivalent resistances of the first and second feedback circuits, the voltage of the VGH line is restored to that when no test signal is applied.

Abstract: In a multilayer printed circuit board (circuit board 20) having an inverter (switching elements 22) mounted thereto, only a second wiring pattern P2 arranged downstream of a semiconductor relays 24 and able to shut off an electric power supply and a third wiring pattern P3 arranged upstream of a shunt resistor 27 and able to detect an overcurrent are placed in adjacent layers in a manner to face each other, and thus, even if the mutually facing portions (laminated portion) of the these two wiring patterns P2 and P3 are subjected to short circuit, an overcurrent caused by the short circuit can be detected by the shunt resistor 27 and the electric power supply to the switching elements 22 can be shut off by the switching elements 22, so that overheating at the second and third wiring patterns P2 and P3 can be avoided.

Abstract: A method for detecting a short circuit fault in a multi-level inverter circuit is provided. The multi-level inverter circuit includes a plurality of single phase branches each including of switches. The method includes steps outlined below. At least one detecting pulse sequence is transmitted to the switches of each of the single phase branches. Whether a conducting path is formed in any of the single phase branches is determined according to the detecting pulse sequence. When the conducting loop is formed, respective position of one or more malfunctioned switch in the single phase branches is located according to a path of the conducting loop. A short-circuit detection device and a three-phase three-level inverter circuit are also disclosed herein.

Abstract: Method and system for Single Event Latchup (SEL) current surge mitigation involves monitoring data signals for a protected device and deriving from them a detected signature comprised of one or more detected signature vector components. The detected signature vector components are compared to previously stored signature vector components. Based on the comparing, the system selectively differentiates between the occurrence of standard power surges associated with normal operation of the protected device, and a non-standard current surge which requires cycling power of the protected device for continued proper functioning of the protected device.

Abstract: A system for dynamically controlling over voltage protection includes a voltage detection circuit, an over voltage protection reference signal output circuit, and an over voltage control signal output circuit. The voltage detection circuit is used for detecting a voltage and outputting a sampled voltage according to the voltage. The over voltage protection reference signal output circuit is coupled to the voltage protection circuit for generating an over voltage protection reference signal according to the sampled voltage and a voltage feedback signal. The over voltage control signal output circuit is coupled to the voltage detection circuit and the over voltage protection reference signal output circuit for generating an over voltage control signal according to the sampled voltage and the over voltage protection reference signal.

Abstract: An system and method to automatically disconnect a retrofit electrical unit from an electrical system in the event of an emergency situation and maintain power to the retrofit electrical unit.

Abstract: Automatic voltage switching circuits for providing a higher voltage of multiple supply voltages are disclosed. In one aspect, an automatic voltage switching circuit is configured to generate a compare signal indicating which of a first supply voltage and a second supply voltage is a higher voltage. The automatic voltage switching circuit is further configured to generate first and second select signals based on the compare signal, wherein the first and second select signals are in a voltage domain of the higher voltage. Transistors corresponding to the first and second supply voltages control switching the output voltage to the higher voltage in response to the first and second select signals. Biasing the back-gates of the transistors using the output voltage reduces or avoids forward biasing in the body diodes of the transistors, thus reducing the possibility of the output voltage causing interference on a power supply corresponding to a non-activated transistor.

Abstract: A device for supplying electricity to at least one secondary electric load (30) on-board a turbomachine rotor (12) including a main circuit for transmitting main electric power to at least one main on-board electrical load (16), includes a device (15) for rotatably and electrically connecting the stator and the rotor, and at least one secondary circuit for transmitting a secondary electric power including at least one secondary conductor (28) of the stator connected to a secondary electric power source (29) suitable for outputting a secondary power in the form of a power signal with a secondary frequency selected such as to enable selective, interference-free transmission of the secondary power via the rotary electric connection device (15), separately from the main power transmission.

Abstract: A method for optimizing a fleet of generating assets in which groupings include remotely located power blocks that operate so to collectively generate a fleet output level. The method may include: receiving real-time and historical measured values of operating parameters; for each of the generating assets, deriving a relational expression between the measured values of the process inputs and the measured values of the process outputs; defining a selected operating period; selecting competing operating modes for the fleet; based on the relational expressions and a generating configuration of the competing operating modes, calculating a result set for the operation of the fleet proposed during the selected operating period; defining a cost function; and evaluating each of the result sets pursuant to the cost function and, based thereupon, designating one of the competing operating modes as an optimized operating mode.

Abstract: A thyristor controlled LC (TCLC) compensator for compensating dynamic reactive power in a power grid system, with an advantage of mitigating harmonic current injection from solid-state switches during switching on or off is provided. Exemplarily, the TCLC compensator is shunt-connected to the three-phase power grid and comprises an electronic controller, a coupling inductor (Lc), a first branch of circuit with a parallel inductor (LPF) and a solid-state switch, and a second branch of circuit with a parallel capacitor (CPF), wherein the coupling inductor (Lc) is connected in series with a parallel combination of the first and second branch of circuit. The electronic controller for the TCLC compensator is configured in accordance to the generalized instantaneous reactive power theory for improving the response speed instead of using traditional average reactive power concept.

Abstract: Methods and systems for stabilizing a power system include receiving a set point for a power system that includes the compensation circuitry controlled by the control system. A firing angle for the power system is set based at least in part on the set point. An angle between a generator terminal of a generator of the power system and a bus of the power system is calculated. A determination is made whether the angle is within a threshold value of the firing angle. When the angle is not within the threshold value of the firing angle, compensation circuitry is engaged to stabilize the power system.

Abstract: A distributed control node enables local control of reactive power. A consumer node generates local real power on a consumer side of a point of common coupling (PCC). The control node converts local real power into reactive power with a conversion device on the consumer side of the PCC. The control node can deliver the reactive power to the grid to provide VARs to the grid from locally generated real power.

Abstract: Optimum power tracking for distributed power sources may be provided by a family of power system architectures having distributed-input series-output (DISO) converters. The DISO converters may be controlled to achieve uniform input voltages across their respective distributed power sources while also tracking an optimum power point of the power system. Each DISO converter may be operably connected to a corresponding power source to form a power-processing channel. A controller may be operably connected to the plurality of DISO converters to control the operation thereof.

Abstract: An installation for transmitting electrical power between a first and a second alternating voltage network. A self-commutated converter can be connected to the second alternating voltage network, and is connected to a unidirectional rectifier by way of a direct voltage connection. The unidirectional rectifier can be connected to the first alternating voltage network on the alternating voltage side, and to a wind farm via said first alternating voltage network. The farm has at least one wind turbine feeding electrical power into the first alternating voltage network when wind speeds are greater than a switch-on wind speed. An energy-generating device can be connected to the first alternating voltage network and/or to the at least one wind turbine for providing electrical energy. The energy-generating device converts a renewable primary energy from its surroundings when wind speeds are lower than the switch-on wind speed for the wind turbine.

Abstract: An iterative framework to optimally integrate various distributed generations (DG) and demand responsive resources (DRR) within a distribution system into transmission market clearing. The concept of distribution aggregated demand and distribution aggregated utility represent a summed distribution level information in consuming electricity that encompasses preferences of the individual DGs and DRRs. This distribution level preference, which is derived based on unbalanced three-phase AC optimal power flow, is bid into the transmission level for optimal market clearing. When the aggregated preferences cannot be obtained, an iterative method enables the transmission and distribution networks to exchange price and demand information. A competitive equilibrium is reached when the method converges to a price-demand coupling point.

Abstract: A circuit arrangement for transferring energy includes an energy source, a control device and an energy distribution network. The energy distribution network has a base element and at least one load element. The base element includes a first intermediate circuit energy storage element which can be electrically connected to or disconnected from the energy source via two first controllable switching elements by way of the control device to form a first energy circuit. The at least one load element includes an energy consumer which can be electrically connected to or disconnected from the connections of the first intermediate circuit energy storage element via two second controllable switching elements by way of the control device to form a second energy circuit.

Abstract: A wireless power reception apparatus includes a reception (RX) resonator configured to form a resonance coupling with a first resonance period associated with an envelope of a power to receive the power from a transmission (TX) resonator; a switch controller configured to generate, at intervals of the first resonance period, a control signal to deactivate the RX resonator at an off timing corresponding to a time instant at which a maximum energy is stored in an inductor of the RX resonator; and a switch configured to deactivate the RX resonator in response to the control signal.

Abstract: An apparatus for wirelessly transferring power is provided. The apparatus comprises a first coupler, a second coupler, and a third coupler overlapping at least the first coupler. The apparatus further comprises a ferrimagnetic structure comprising a first portion disposed under the first coupler, a second portion disposed under the second coupler, and a gap defined between the first coupler and the second coupler, the gap physically separating the first portion from the second portion. One or both of the first portion and the second portion comprises a first plurality of ferrimagnetic strips interleaved with a second plurality of ferrimagnetic strips configured to attenuate a magnetic flux passing between the first and second couplers. The first plurality of ferrimagnetic strips are interleaved with the second plurality of ferrimagnetic strips under at least a portion of the first coupler that is overlapped by the third coupler.

Abstract: A multi-level rectifier is presented that is suitable for use at high frequencies, including into MHz range such as in the 6.78 MHz band used for wireless power transfer. To maintain the proper timing or switching waveform when operating at high frequencies, a feedback loop is used. The rectification circuit includes a multi-level waveform generator circuit that generates a multi-level control waveform from the input waveform and an indication of its current. The multi-level control waveform is maintained in phase with the input waveform. A control signal generation circuit receives the multi-level control waveform and generates control signals corresponding to levels of the multi-level control waveform. A synchronous rectifier receives the input waveform and includes a plurality of switches to provide an output voltage generated from the input waveform. The switches are coupled to receive the control signals and the output voltage is a function of the multi-level control waveform.

Abstract: A system and method for configuring a transport refrigeration unit (TRU) battery charger in a transport refrigeration system (TRS) is provided. The method includes receiving battery topology data indicating a battery topology of a TRU battery equipped in the TRS. The method also includes determining specific parameters for configuring a battery charging algorithm based on the battery topology data. Also, the method includes the TRU battery charger configuring the battery charging algorithm based on the specific parameters.

Abstract: A flying capacitor type voltage detecting device which uses a capacitor to detect a voltage of each battery stack of a battery pack which includes a plurality of battery stacks each of which includes a plurality of battery cells connected in series, includes: a detecting unit that detects a voltage between both ends of the capacitor, as the voltage of each battery stack; and a branch line that is a single line which is branched from a connection line connecting the battery stacks and the detecting unit and connected to the capacitor and where a current during charging of the capacitor and a current during discharging of the capacitor flow in opposite directions.

Abstract: A system includes a first circuit in which storage battery units are connected in series, second circuits, adjusters that adjust the amounts of the currents flowing through the second circuits, and a controller that performs at least one of first control and second control. The first control is control in which the controller causes the adjusters to make the voltage of a first storage battery unit higher than the voltage of a second storage battery unit having a higher degree of degradation than the first storage battery unit by adjusting the amounts of the currents flowing through the second circuits and then stops a charge. The second control is control in which the controller causes the adjusters to make the voltage of the first storage battery unit lower than the voltage of the second storage battery unit by adjusting the amounts of the currents flowing through the second circuits and then stops a discharge.

Abstract: A charging and discharging system includes a vehicle, a cable, and a charging and discharging device. The vehicle includes an electric storage device, a first fuse, and an inlet. The cable includes a connector, a second fuse, and a power line. The charging and discharging device is configured to convert AC power supplied from a commercial AC power source into DC power and to supply the DC power to the electric storage device via the cable in a charging mode. The charging and discharging device is configured to convert DC power supplied from the electric storage device via the cable into AC power and to supply the AC power to a load in a discharging mode. The first fuse is configured to be melted and cut earlier than the second fuse when the power line causes a short circuit in the discharging mode.

Abstract: An electronic equipment, including: an electronic circuit which includes a control section and performs a predetermined functional operation; a battery which supplies electric power to the electronic circuit; a supply detecting section which detects power supply from outside; and a supply cutoff section which cuts off power supply from the battery to the electronic circuit, wherein when the supply detecting section detects the power supply from outside, the supply detecting section performs a battery connection operation of releasing cutoff of the power supply by the supply cutoff section.

Abstract: The present invention provides a DC-DC converter which is connected to a high voltage battery and a low voltage battery to convert a high voltage of the high voltage battery into a low voltage to charge the low voltage battery, including: a connecting unit which connects the high voltage battery and the low voltage battery; a converting unit which converts a high voltage supplied from the high voltage battery into a low voltage to charge the low voltage battery; and a protection circuit which is located between the connecting unit and the converting unit and is turned off when at least one of the high voltage battery and the low voltage battery is erroneously connected, to shut off a current path between the high voltage battery and the low voltage battery.

Abstract: An electronic device and method and power supply are disclosed. The electronic device includes comprising a connector for electrically coupling with an external power supply unit, and a processor. The processor implements the method, which includes detecting a connection state with the external power supply unit, and detecting whether power supplied from the external power supply unit is abnormal, and controlling the power when the power supplied has an abnormal value. The power supply may include a connector for electrically coupling with an electronic device, and a processor for detecting a connection state with the electronic device, detecting whether power supplied to the electronic device by the power supply unit has an abnormal value, and controlling the supplied power when the power is abnormal.

Abstract: An electronic device is provided. The electronic device includes a connection terminal to which a charging cable or a discharging cable can be connected, a charging/discharging unit configured to perform a charging operation or a discharging operation, and a controller configured to perform a charging or discharging operation based on a cable connected to the connection terminal.

Abstract: A mobile terminal includes a battery; a first universal serial bus (USB) interface, a central processing unit (CPU), a USB charging management module, and a charging management chip. The central processing unit (CPU) is configured to generate an on/off command, and configured to output an adjustment signal. The USB charging management module is configured to turn on or off a charging channel according to the on/off command, and configured to control a value of a charging current according to the adjustment signal, combine the charging current, and transmit the combined charging current to a charging management chip. The charging management chip is configured to transmit the charging current to the battery to charge the battery.

Abstract: Devices having battery charge control circuits are disclosed. Such devices can include power control circuits operable to receive electrical power at a connector, and provide power to electrical components, including a charge current for a rechargeable battery; and a controller circuit configured to determine and store a maximum charge current setting based on whether a voltage at the connector falls below a predetermined limit as the charge current is increased. Corresponding methods are also disclosed.

Abstract: A battery device includes: a secondary battery; a charger; a first transistor configured to control conduction between the secondary battery and a load; a second transistor configured to control conduction between the charger and the secondary battery; diodes of which cathodes are connected to each other and that are connected between the secondary battery and the charger; a capacitor configured to accumulate charge to be transferred to the gate of the first transistor; a capacitor configured to accumulate charge to be transferred to the gate of the second transistor; and a battery control device configured to control charging/discharging of the secondary battery.

Abstract: GaN-based half bridge power conversion circuits employ control, support and logic functions that are monolithically integrated on the same devices as the power transistors. In some embodiments a low side GaN device communicates through one or more level shift circuits with a high side GaN device. Both the high side and the low side devices may have one or more integrated control, support and logic functions. Some devices employ electro-static discharge circuits and features formed within the GaN-based devices to improve the reliability and performance of the half bridge power conversion circuits.

Abstract: A connector comprises: an elongated connector body defining a longitudinal direction with an electrical connector frame at one end thereof; the elongated connector body having a longitudinal alignment feature on the elongated connector body configured for aligning the elongated connector body, a guide feature defining a unique orientation thereof, and a retaining feature configured for retaining the elongated connector body in a connector guide.

Abstract: A battery charger comprises: a housing having at least one cradle; a connector port for receiving at different times electrical plug connectors having different contact configurations; electrical receptacles in the connector port for receiving at different times electrical plug connectors associated with different electrical power supplies, plural electrical receptacles having different contact configurations; the plural electrical receptacles being closely adjacent such that an electrical connector inserted into one electrical receptacle physically prevents an electrical connector from being inserted into the other electrical receptacle; and an electrical circuit coupling electrical power received at the electrical receptacles to the at least one cradle.

Abstract: The present disclosure proposes a charging circuit and a mobile terminal. The charging circuit includes: a first circuit, coupled to a charging port, to draw DC power signal, and convert the DC power signal into AC power signal; a second circuit, coupled to the battery, configured to receive the AC power signal from the first circuit, and convert the AC power signal into DC power signal for charging the battery; a capacitance coupling component, coupled between the first circuit and the second circuit. The capacitance coupling component is configured to block DC power signal from the first circuit. That is, the DC power signal fails to pass through the first circuit. Thus, the DC power signal flowing through the charging port does not flow to the second circuit and the battery directly when the first circuit malfunctions. Accordingly, the stability of the charging circuit is enhanced.

Abstract: Within examples, systems for power distribution within the cabin of an aircraft are provided and methods for operation. The system includes a passenger seat of the aircraft. The passenger seat includes a charging module. The charging module is configured to supply power to a connected device of the passenger seat. The passenger seat also includes a passenger control unit (PCU) coupled to the charging module. The passenger control unit is configured to determine a power requirement for the connected device. Additionally, the passenger seat is associated with a seat grouping of the aircraft. The seat grouping of the aircraft includes at least one passenger seat. Further, the power distribution system includes a power supply configured to supply power to at least one charging module based on the determined power requirement.

Abstract: A method of managing a battery system using a battery management system. The method includes receiving, measured characteristics of one or more battery cells from one or more sensors, receiving, estimated parameters of the battery cells, estimating, one or more states of the battery cells by applying a battery model based on the measured characteristics and the estimated parameters of the battery cells, updating, at least a portion of the estimated parameters based at least in part on the estimation of the states of the battery cells by applying two or more separate battery models, updating, the one or more states of the battery cells based at least in part on the updated estimated parameters of the battery cells, and regulating charging or discharging of the battery based on the updated estimation of the states of the battery cells.

Abstract: A charging device may include firmware configured to execute and control charging functions and updating functions performed by the charging device. The firmware includes a first section configured to store instructions associated with the charging functions and a second section configured to store instructions associated with updating the first section. The charging device may also include a charging slot for insertion of one of a rechargeable device and an updating device. The charging device may further include a micro-controller configured to execute instructions stored on the firmware. Responsive to the updating device being inserted into the charging slot, the charging device executes instructions stored in the second section to enter an updating mode and update the firmware.

Abstract: A feed unit includes: a power transmission section configured to perform power transmission using a magnetic field or an electric field, to a device to be fed including a secondary battery; and a power-transmission control section configured to control power transmission operation in the power transmission section. In a charging period in which charging to the secondary battery is performed based on transmitted power in the power transmission, when the device to be fed including the secondary battery is activated, the power-transmission control section controls the power transmission operation, to increase the transmitted power.

Abstract: Various embodiments of a single structure multiple mode antenna are described. The antenna is preferably of a single layer construction having a plurality of inductor coils positioned on respective opposing substrate sides that are electrically connected. The antenna is also constructed having a plurality of electrical connections positioned along the first and second inductor coils. A plurality of terminals facilitates connection of the electrical connections thereby providing numerous electrical connection configurations and enables the antenna to be selectively tuned to various frequencies and frequency bands.

Abstract: A method of operating a single structure multiple mode antenna is described. The antenna is preferably constructed having a first inductor coil that is electrically connected in series with a second inductor coil. The antenna is constructed having a plurality of electrical connections positioned along the first and second inductor coils. A plurality of terminals is connected to the electrical connections that facilitate numerous electrical connections and enables the antenna to be selectively tuned to various frequencies and frequency bands.

Abstract: A wireless power charging device includes a coil configured to transmit or receive a wireless power signal; an electromagnetic wave shielding sheet disposed proximate the coil; and, a heat radiation layer disposed on the electromagnetic wave shielding sheet.

Abstract: A method of monitoring and inductively charging a firearm is implemented with an inductive charging base that includes a chipset, a GPS module, and a wireless communication module. When the firearm is placed onto the inductive charging base, the base charges a portable power source of the firearm and receives a current location of the base from the GPS module. If the firearm is physically separated from the base, then the chipset generates a separation notification. The chipset then sends both the separation notification and the current location of the base with the wireless communication module to contact information stored on the chipset. The contact information is for an authorized user profile of the firearm.

Abstract: Disclosed are a method and apparatus for controlling a booster circuit such that maximum power is extracted from a power supply while power consumption for monitoring power generated by the power supply is reduced, and an apparatus for extracting maximum power by using the method and apparatus for controlling a booster circuit.

Abstract: Power generation and storage system and/or solar power generation and storage packaged panels and storage functions in a device and their installment of Signal UPS system device and this power equipment Station combined with various electric power generators. The first aspect of his invention relates to Intelligent function installing Power generation and storage system, involving a control system of Charge-Discharge, Power storage and supplemental charge-discharge functions, packaging lithium ion rechargeable battery (LIB) (1) sole or a combination of LIB and capacitor-condenser as battery units, Charge-Discharge Control Unit (2) containing Charge-Discharge controller.

Abstract: A system for recharging a battery having; memory that stores computer-executable instructions; a processor, communicatively coupled to the memory that facilitates execution of the computer-executable instructions; the instructions having: a battery; a thermal insulating layer; the thermal insulating layer; adapted and configured as the exterior of the battery; the battery adapted and configured with the thermal insulation layer for harnessing heat created by a plurality of solar panels; the plurality of solar panels configured on the exterior of the battery; an application interface unit; the application interface unit adapted and configured to control the plurality of solar panels; wherein the processor transforms heat energy collected by the plurality of solar panels and stored in the thermal insulation layer into energy to power a communication device.

Abstract: A DC converter includes a non-isolated conversion module and an isolated conversion module. The non-isolated conversion module is implemented based on a redundant structure and has a first power conversion loop, a second power conversion loop, and an energy storage element. The first and second power conversion loops are connected and share the energy storage element. The energy storage element is further connected to an input terminal of the isolated conversion module. The first and second conversion loops of the non-isolated conversion module convert DC power outputted from two battery sets and output the converted power to the isolated conversion module. The isolated conversion module further supplies DC power to a load. Accordingly, power supply systems using the foregoing DC converter can reduce the number of transformer therein and thus size reduction of the power supply system can be achieved.

Abstract: A software platform in communication with networked distributed energy resource energy storage apparatus, configured to deliver various specific applications related to offset demand monitoring, methods of virtual power plant and orchestration, load shaping services, methods of reducing demand at aggregated level, prioritizing computer programs related to virtual energy pool, energy cloud controllers methods, charge discharge orchestration plans of electric vehicles, distributed energy resources, machine learning predictive algorithms, value optimizing algorithms, autonomous sensing event awareness, mode selection methods, capacity reservation monitoring, virtual power plant methods, advanced DER-ES apparatus features, energy management system for governing resources and methods, aggregated energy cloud methods, load shaping methods, marginal cost cycle-life degradation, load shaping API, forward event schedule, on demand request, and load service state request methods.

Abstract: A wireless power transmission system includes a power transmission device, which applies an alternating-current voltage to active and passive electrodes, and a power reception device, which supplies to a load a voltage induced in active and passive electrodes facing the active and passive electrodes of the power transmission device. The power transmission device includes a planar coil connected to the active and passive electrodes and the power reception device includes a planar coil connected to the active and passive electrodes. Magnetic flux generated by the planar coils link with each other causing the planar coils to be magnetic-field coupled with each other. Thus, a wireless power transmission system capable of efficiently transmitting power is provided.

Abstract: A voltage measuring method for a supplying-end module of an induction type power supply system includes generating a coil signal on a supplying-end coil of the supplying-end module; clamping the coil signal to generate a clamp coil signal; performing signal processing on the clamp coil signal to generate a first signal and a second signal, respectively; generating a cyclic signal, a frequency of which is equal to a frequency of the coil signal; comparing the first signal and the second signal via a comparator to obtain a first time and a second time when the first signal and the second signal have an equal voltage level during a cycle of the cyclic signal; calculating a middle time of the first time and the second time; and sampling the clamp coil signal or the coil signal to obtain a peak voltage of the coil signal according to the middle time.

Abstract: An inductive power transfer system is provided that includes at least one inductive power receiver having at least one secondary inductor for forming an inductive couple with a primary inductor and providing power to an electric load and at least one inductive power outlet having at least one primary inductor wired to a power supply via a driver configured to provide a driving voltage across the primary inductor. The driving voltage is oscillating at a transmission frequency significantly different from the natural frequency of the inductive couple. The system further includes at least one power monitor and at least one frequency modulator operable to adjust the natural frequency of the inductive couple thereby regulating power provided to the electric load.