Abstract: A method of operating an alternating current (AC) power distribution assembly (PDA), where the ACPDA includes a plurality of AC power distribution modules, each connected to a respective AC load includes turning a first switch off and turning a second switch on in each of the AC power distribution modules; starting up each of the respective AC loads; monitoring a load current in the ACPDA and obtaining an acceptable load current in the ACPDA; determining if a set of motor sensor parameters for the ACPDA are within predetermined limits, and, in the event the motor sensor parameters are within the predetermined limits, determining if a startup period has elapsed; and in the event the startup period has elapsed, turning the first switch on and turning the second switch off in each of the AC power distribution modules.

Abstract: A power generation system for feeding power from generators into an AC grid, the system comprising a plurality of inverters connected to corresponding ones of the generators, and connected to the AC grid is disclosed. The plurality of inverters forms part of a data network, wherein one of the inverters forms a communication unit for receiving feed-in parameters from a grid control system and for controlling the plurality of inverters via the data network such that the power generation system feeds power to the AC grid in accordance with the feed-in parameters.

Abstract: A device may include an interconnect module that includes a number of ports, where each port is configured to receive both an alternating current (AC) power supply and a direct current (DC) power supply; where the interconnect module provides power from the received power supplies to a plurality of field replaceable units (FRUs).

Abstract: A portable power station and/or an in-line uninterruptible power supply for use with a laptop, mobile computer, netbook, notebook and other electronic devices is presented. The in-line uninterruptible power supply comprises a plurality of data ports disposed in a communicative relation with the electronic device and a plurality of power output ports for simultaneously providing power to a plurality of various electronic devices. In addition, at least one embodiment of the in-line uninterruptible power supply station is positioned between at least one of the electronic device's power adapter and the corresponding base unit, and is structured to supply continuous power to the connected electronic device(s), even in the event of a temporary power failure.

Abstract: A power supply system for a residential or a commercial unit is disclosed. The system comprises an AC power source from a power grid, a DC power source from one or a plurality of remote alternative power sources and another DC power source from one or a plurality of local alternative power sources. The generated DC power from the remote sources is delivered to the unit using a dedicated DC power distribution unit. The alternative power sources either locally or remotely located to residential or the commercial unit may comprise one or a plurality of solar systems. The system may also comprise one or a plurality of wind turbines. There are two groups of electrical appliances from the unit connected to the system. The first group receives the AC power only and the second group receives the AC and/or the DC powers. A power management device for the unit selects the power supply sources to minimize the power consumption from the AC power grid.

Abstract: A device may include an interconnect module that includes a number of ports, where each port is configured to receive both an alternating current (AC) power supply and a direct current (DC) power supply; where the interconnect module provides power from the received power supplies to a plurality of field replaceable units (FRUs).

Abstract: The present invention provides a multi-input power converting system for renewable energies capable of integrating and converting various renewable energies so as to achieve energy compensation and thus high-reliability power supply. The multi-input power converting system comprises a multi-input power converter, at least a battery bank and at least a dynamic voltage restorer. The multi-input power converting system is capable of integrating a plurality of renewable energies and outputting DC power to a DC load by way of a DC bus to prevent AD/DC conversion loss and reduce the cost of installing rectifiers. Moreover, the multi-input power converting system is capable of storing surplus power in the battery bank and outputting AC power to an AC load by way of an AC bus or to an AC grid after the AC voltage waveforms or power factors have been compensated by a dynamic voltage restorer.

Abstract: An energy storage system includes a battery charger and energy storage devices. The battery charger is connected to a DC/AC current source. The energy storage devices are coupled between the battery charger and subsystems respectively. Each of the energy storage devices includes a magnetic capacitor (MCAP) and an over current protection device (OCPD). MCAPs are charged by the battery charger and supply the electric power to subsystems connected the energy storage devices. OCPDs detect current from MCAPs to subsystems and protect subsystems from excessive currents of voltages.

Abstract: An electric shock proof socket circuit includes a power supply module for stepping down and rectifying an input voltage and then providing the step-down and rectified voltage to a detecting module and a switching module. The detecting module includes a light-emitting unit and a light-receiving unit. The light-emitting unit is used for emitting light for the light-receiving unit. Whether the light from the light-emitting unit is received by the light-receiving unit or not makes the detecting module send corresponding control signals. The switching module controls power output of the socket circuit according to the control signals for preventing an electric shock danger. So the electric shock proof socket circuit has the advantages of security and convenience.

Abstract: Embodiments of a system, topology, and methods for providing electrical power to electronic devices from various power sources are described generally herein. Other embodiments may be described and claimed.

Abstract: This invention concerns an electrical energy supply and distribution system. The system is able to handle both large centralised electricity generation plants, as well secondary energy sources which are becoming increasingly important. These sources may or may not be connected to deliver electrical energy to a 50 Hz AC power distribution grid. The system comprises a supply side where multiple electrical energy generators are connected via connections ports, involving conditioning circuitry, into a single DC electrical energy source. This energy source may be supplied to a common inverter system to convert it to AC for transmission on over a power grid. A rectifier may take the AC power from the grid and delivers it to loads. Whether an AC grid in involved or not, on the delivery side energy is delivered to multiple loads via connection ports involving conditioning circuitry. Any of the generators or loads may be taken offline or connected back into the system at will.

Abstract: It is described a modular power distribution system to drive DC and AC electrical loads, comprising: one or more logical units (LOU0 . . . LOUn) in independent locations, receiving DC and AC power lines for distribution to respectively DC and AC electrical loads in all of said independent locations; one or more physical units (PHU0 . . . PHUn), in each of said logical units, each of said physical units controlling and distributing DC or AC power to respectively one or more of said DC or AC electrical loads in one of said independent locations; one or more power modules (MDC, MAC) in each of said one or more physical units (PHU0 . . . PHUn), for specific distribution of DC or AC power to one of said DC or AC electrical loads; at least one master control unit (MBC) for each of said one or more logical units, said master control unit (MBC) being placed in one of said physical units, to control the functions of the pertaining logical unit.

Abstract: Disclosed is a power assembly for supplying electrical power to 4-20 mA 2-wire field devices, including HART-enabled, short run Profibus PA, and Foundation Fieldbus protocols. A preferred embodiment of the power assembly is designed to simplify the testing, troubleshooting, and configuration of HART 2-wire field devices. The disclosed device is compatible with hand-held or PC-based configuration software, and utilizes the available power from the USB port of a laptop, or any other compatible source of low-voltage DC. An internal circuit converts the low voltage DC to 24-volt DC to provide 2-wire power for the field devices. The power supply includes the necessary network communication load and/or resistance and may provide a quick modem/network interface and/or milliamp meter connection. All the necessary connections to the 2-wire field device are made with a single pair of quick-disconnect fittings.

Abstract: An image forming apparatus, includes: a first rectifying circuit that is connected with an external commercial power supply and rectifies an alternating-current input; a first low-voltage power supply circuit that generates low voltages from a rectified power for power supply to respective parts of the apparatus; a first connector that is connected with the first rectifying circuit and is for outputting a power rectified by the first rectifying circuit; and a second connector that is connected with the first low-voltage power supply circuit and is for taking in a rectified power, wherein the apparatus is singly usable and optionally usable by being connected with an image reading apparatus, and the apparatus forms an electrostatic latent image, forms a toner image by developing the electrostatic latent image with toner, and fixes the toner image onto a transfer sheet.

Abstract: A hybrid green uninterruptible power system including an input port, a boost module, a secondary battery, a bi-directional converter module, and an inverter module is provided. The boost module converts an AC utility power into a high voltage DC power. The bi-directional converter module includes a multi-winding transformer for either converting the high-voltage DC power into a low-voltage DC power for charging the secondary battery, or for releasing and boosting the power stored in the secondary battery. The multi-winding transformer further induces an additional DC power when converting the power. Whereby, the hybrid green uninterruptible power system is able to generate the additional DC power all the time and optimizes its energy converting efficiency between the secondary battery and an external device consuming DC power.

Abstract: A system and method for preventing over voltages in a power system coupled to an electric machine are disclosed. Briefly described, one embodiment is a method comprising detecting an operating voltage on a high voltage direct current (HVDC) bus, determining if at least one component of the power system is operational, communicating a signal to a power converter of the power system when the detected operating voltage is greater than a threshold voltage and when the component is not operational, and shorting together a plurality of terminals of the electric machine.

Abstract: A vehicle auxiliary electric-power-supplying system can normally stop an electric power inverter by the frequency in use for an electric power supplier being suppressed as low as possible, and electric power being immediately started to be supplied from the power supplier to a controller in a case in which normal electric power has become unable to be obtained from power-outputting of the electric power inverter.

Abstract: The invention relates to a switch mode power supply (SMPS—Switching Mode Power Supply) which provides the output voltages generated in the AC-network-input switch mode power supply (SMPS—Switching Mode Power Supply) circuits also with battery and similar supply inputs when necessary by using a shared power transformer (T3) having separate power input windings (7, 6) appropriate for the particular input voltage for each input supply and the power switching transistors (Q1, Q2, Q5, Q6) connected to this windings in accordance with the topology used and, which other remaining control, feedback, output rectifying and filtering circuits and other windings of the transformer are single and shared without using a second independent power supply or regulator circuit in addition to the network-input power supply.

Abstract: An apparatus for regulating voltage and aerospace electrical power systems are implemented. A multi-functional apparatus for regulating voltage, according to one embodiment, comprises: a DC to DC converter (315), wherein the DC to DC converter (315) is controlled to operate in a first direction to receive a DC voltage from a first bus (329) and to output a first regulated DC voltage adjusted to charge a battery (307), wherein the first bus (329) receives power from a second bus (201), and is controlled to operate in a second direction to receive a battery DC voltage from the battery (307) and to output a second regulated DC voltage to the first bus (329) to power a load (231) independently or in combination with the second bus (201).

Abstract: Portable hybrid applications for AC/DC load sharing includes circuitry for simultaneously using at least one of external AC, internal DC power and/or external DC power. The apparatus also includes an input power receptacle for receiving at least one of AC power and external DC power. A power router inside the apparatus routes at least one of AC power, internal DC power, and external DC power to provide power for an application. An apparatus for providing DC to DC conversion includes a tip and a DC to DC whip connected to the tip. A male plug is connected to the second end of the whip. A buck converter within the male plug converts DC power to a DC power level associated with the whip and transmits the converted DC power along the DC to DC whip to the tip. Alternatively, an internal DC source provides internal DC power.

Abstract: A power supply device for powering equipment from at least one network supplying AC and at least one battery supplying DC, the power supply device comprising: a first branch that is connected to the main network and that comprises a transformation member for transforming the AC voltage into an equivalent DC voltage; a second branch that is connected to the battery and that comprises a voltage booster for raising the DC voltage supplied by the battery to an output voltage close to the DC voltage equivalent to the AC voltage; the first branch and the second branch being connected by a switch member to a converter arranged to transform the DC voltage equivalent to the AC voltage of the network into at least one DC voltage for powering the equipment.

Abstract: An information apparatus 1 receiving power from a portable power source 16 is provided with an external power receiving section 17 receiving the power by connection to non-portable power sources 20 and 21; an operation section SW switching supply and cutoff of the power from the non-portable power sources 20, 21 that are connected to the portable power source 16 or to the external power receiving section 17; judging sections 11 and 19 for judging, when the information apparatus 1 is activated by the supply of power, whether or not the activation is a first activation since the information apparatus 1 is shipped from a factory; and an informing section 13 for prompting a user to connect the external power receiving section 17 to the non-portable power sources 20 and 21 when the activation is the first activation since the information apparatus 1 is shipped.

Abstract: There is provided a power supply for AC/DC and DC/DC conversion which receives the DC power supplied from airplanes, vehicles and vessels as well as normal AC power, and converts the power to DC power and supplies it to portable electronic products. The power supply for AC/DC and DC/DC conversion includes an AC input 10, a DC input 20, a switch 30 for selecting AC input power or DC input power, a DC output 40, and a circuit used for AC/DC and DC/DC conversion 100 which converts the power input from the AC input or the DC input to DC power having predetermined values of current and voltage, and a secondary side of a transformer (TL) for AC/DC conversion inside the circuit for conversion serves as an inductor for performing DC/DC conversion.

Abstract: A switching mode power supply uses two power source inputs, an alternating current input and a direct current input. A pulse width modulation controller is used to control current from two primary windings of a transformer. The secondary of the transformer has a rectified direct current output. From the direct current output a current/voltage comparator receives a signal across a sensing resistor and through an inverter and in parallel with respect to the direct current output. The current/voltage comparator may communicate through an opto coupler/isolator and then to a pulse width modulation controller. Instructions are received about the voltage and current necessary to be supplied by the direct current output of the power supply from an internal, circuit board mounted selecting network. The selecting network can be resistive, digital, fiber optical, black and white, or color.

Abstract: An apparatus includes a vehicular electric power generation system comprising a variable speed internal combustion engine, a first variable speed electric power generator driven by the engine, a second variable speed electric power generator driven by the engine, a first inverter to receive electric power from the first generator a provide a first controlled electric output, a second inverter to receive electric power from the second generator and provide a second controlled electric output, and a controller coupled to the engine. The controller is responsive to variation in electrical loading of the first inverter and the second inverter and a degree of electrical load imbalance between the first inverter and second inverter to provide one or more engine control signals. The engine is responsive to the one more engine control signals to change rotational operating speed to adjust for the variation in electrical loading and the degree of electrical load imbalance.

Abstract: Disclosed is a method of supplying DC power to equipment using proton exchange membranes (PEMs). PEMs run on hydrogen to produce DC electrical power. In the disclosed embodiment these PEMs are used as an alternative source of power to AC sources. One of these other sources is generated by an array of gas turbines. Another source is provided by a commercial utility. AC from these sources is converted using rectifiers. Capacitors are used to bridge when switching between energy sources.

Abstract: A method of generating electric power includes providing at least one open-winding generator having at least one winding, wherein the at least one winding has a first terminal and a second terminal. The method also includes electrically coupling the first terminal to a first electric power electronics apparatus via a first electric bus and electrically coupling the second electric terminal to a second electric power electronics apparatus via a second electric bus. The method further includes inducing and regulating a first voltage on the first electric bus and inducing and regulating a second voltage on the second electric bus.

Abstract: In a power-saving control module for an electrical appliance that includes a DC power supply and a remote control receiver, a switch component serves to make or break electrical connection between an AC power source and the DC power supply, a diode provides a path for supply of a DC power output from the DC power supply to the remote control receiver when connection between the DC power supply and the AC power source is made, and a rechargeable power source provides DC power to the remote control receiver when connection between the DC power supply and the AC power source is broken. A driver is controlled by the remote control receiver so as to cause the switch component to make or break the electrical connection between the AC power source and the DC power supply.

Abstract: A mobile power system for producing power at a desired location includes a first power generating device of a first type coupled to a transportable housing, and a second power generating device of a second type coupled to the transportable housing. The first type of power generating device is different than the second type of power generating device. According to an exemplary embodiment, the mobile power system may provide easy access to different types of power outputs. Further, the housing may have the approximate size of a standard freight container.

Abstract: A selectable source input power supply is disclosed. According to one embodiment, a power supply is provided comprising an input stage including an input connector to couple the power supply to either of an AC input voltage or a DC input voltage, and an actuatable input switch to determine which of the AC input voltage and the DC input voltage is coupled to the power supply, to couple the input stage to an alternating current path in response to a determination that the AC input voltage is coupled to the power supply, and to couple the input stage to a direct current path in response to a determination that the DC input voltage is coupled to the power supply.

Abstract: A hybrid power system has two voltage sources, a variable DC power source, and a second power source, connected through selection components to a common node. The variable DC power source may be a solar power source and the second source may be an AC grid. The selection components, e.g. blocking diodes, SCRs, or relays, allow one or both of the sources to be connected to the node depending on the voltages produced by the sources. A variable speed drive and load may be connected to the node.

Abstract: An integrated power supply apparatus for information appliances includes a power supply input unit, a rectification unit and a voltage boosting unit. The previous design of transforming low voltage to high voltage through a voltage boosting unit (inverter) is changed to transforming to medium voltage through the rectification unit then is transformed to high voltage through the voltage boosting unit. Therefore loss on the low voltage power supply is eliminated, and performance may increase from 64% to about 80% or more. Thus the low voltage power supply module that otherwise should have extra power and greater watts may be shrunk and power supply efficiency may increase.

Abstract: An interface between software and hardware, as well as a fuzzy logic control algorithm, for controlling a DC-DC converter or an AC-DC or DC-AC inverter are provided. A control circuit receives commands from a control logic to operate a converter or inverter in various operation modes. Control software inputs can be translated into signals to operate the converter or inverter. Control variables in the control software can be configured to operate under various control modes. If the converter or inverter cannot simultaneously meet the demands placed on two or more variables, the control logic can use prioritization to choose a more important constraint.

Abstract: A multi-directional power distribution unit (PDU) provides flexibility in the configuration of a computer system, disk drive array or other enclosure. The power distribution unit may be installed in one orientation for a power feed having a first configuration (e.g., from the front of the enclosure), and may be installed in a second orientation for a power feed in a second configuration (e.g., from the rear of the enclosure). In either orientation, a set of external power connectors couples to one or more external power feeds. Depending on the orientation, either a first or second internal connector will interface with the system or enclosure (e.g., a midplane, a power supply). The PDU may include circuitry for filtering electrical power and may also include a heat sink.

Abstract: A voltage adapter for use with DC operable devices and for deriving a DC output voltage from either an AC voltage power source or a DC voltage power source. The voltage adapter, which is selectively coupled by a cable assembly to either a DC voltage power source or an AC voltage power source, includes separate voltage regulators for regulating a DC output voltage derived from the AC voltage and a DC output voltage derived from the DC voltage. The voltage adapter also allows selection of the amplitude for the DC output voltage within a range.

Abstract: A notebook-sized personal computer representing consumption-side hardware sends electric power data, which indicates an electric power (including voltage, alternating or direct current, cycle and wave shape) suited to the personal computer, to an electric power supply system through a communication line. In the system, the electric power data of the personal computer is analyzed in an allotter, and the allotter sends electric power data, which indicates an electric power required in the allotter, to an electric power supply adapter through a communication line. The electric power supply adapter converts an electric power received from an electric power company into another electric power matching with the electric power data of the allotter and supplies the converted electric power to the allotter through an electric power line.

Abstract: A power supply system has a power input to receive input power from a power source, a power output to provide output power to a load, at least one battery module having a battery output that provides battery power, at least one power module coupled to the power input to receive the input power, coupled to the battery output to receive the battery power and coupled to the power output to provide the output power, a controller, coupled to the at least one power module, constructed and arranged to monitor and control the output power from the at least one power module, and a redundant controller, coupled to the at least one power module and to the controller, constructed and arranged to provide redundant monitoring and controlling of the output power from the at least one power module.

Abstract: The invention relates to an electrical power supply system for powering electronic equipment. The system uses an AC main power supply under normal conditions and uses a DC secondary power supply to supply power if the main power supply fails. The system has a means for detecting the failure of the main supply and for switching over to the secondary supply in a back-up mode. Each piece of electrical equipment has a distinct power converter that delivers internal power required by each piece of equipment. The power converter of each is powered directly by the main power supply under normal conditions and directly by the secondary power supply in the back-up mode. The system of the instant invention is less costly and produces less loss due to conversions than the prior art systems.

Abstract: A hub for a local area network according to one embodiment of the present invention includes a plurality of communication ports connected to each of nodes in the network, through which a signal is transmitted among the nodes, a signal processing circuit having at least the functions of repeating the signal among the nodes and reshaping a waveform thereof, and a power supply circuit for supplying a dc current for driving the signal processing circuit.

Abstract: A power supply system has a power input to receive input power from a power source, a power output to provide output power to a load, at least one battery module having a battery output that provides battery power, at least one power module coupled to the power input to receive the input power, coupled to the battery output to receive the battery power and coupled to the power output to provide the output power, a controller, coupled to the at least one power module, constructed and arranged to monitor and control the output power from the at least one power module, and a redundant controller, coupled to the at least one power module and to the controller, constructed and arranged to provide redundant monitoring and controlling of the output power from the at least one power module.

Abstract: A circuit for continuously directly or indirectly varying a combination of direct and alternating current flowing through a load supplied with a combination of direct and alternating voltage from a public utility mains, has a low-pass filter that serves for achieving a continuously flowing input current I.sub.in, a coil that is connected in series with the load or is inherently contained in the load, a first alternating current switch that is connected parallel to the load and to the coil, a second alternating current switch connected in series with the load that can be driven with a higher switching frequency compared to the network frequency f.sub.network, and a regulator for the direct or indirect regulation of the direct and/or alternating current I.sub.load flowing through the load. The regulator has an acquisition part for the direct and/or indirect acquisition of the actual direct and/or alternating current I.sub.

Abstract: A method and circuit arrangement for covering peak energy demand in an electrical AC or three-phase current network having a plurality of consumers of which at least some of the consumers are equipped with a stand-by power supply network having accumulators and at least one rectifier fed from the electrical network. The method includes feeding a fraction of energy from the accumulators of each individual stand-by power supply network into the electrical network via inverters for a short term peak demand of the electrical network. The fraction of energy is fed from the accumulators as long as peak demand is present and sufficient energy for the stand-by power supply is still available in the accumulators.

Abstract: A supply unit including a direct voltage energy source formed of a number of rechargeable batteries; an electric motor for driving the vehicle; and an electric circuit interposed between the direct voltage energy source and the electric motor. The electric circuit is reconfigurable, and provides for a first operating mode to control the alternating supply voltage of the motor, and a second operating mode, alternative to the first operating mode, and wherein the reconfigurable circuit provides for rectifying an alternating voltage to recharge the batteries.

Abstract: Method and apparatus for providing either AC mains or DC power for an electrically powered tool having a motor designed to be powered by a removable battery pack which fits into a recess in the tool. The apparatus includes a power block capable of being powered either by AC mains or DC power. The power block includes an AC to DC convertor, a voltage input selector, a DC to DC convertor, an auto voltage selector, and a solid state current monitor which automatically sets the voltage and current to be delivered to the tool motor at the voltage and current required to produce the tool motor's full rated driving torque.

Abstract: An AC/DC power supply includes an input sensing circuit for sensing whether the input connector is connected to an AC voltage source or to a relatively lower amplitude DC voltage source. When connected to the AC voltage source, a control circuit connects an input rectifier to the input circuit and also connects two primary windings of a power transformer in boosting relation to the output circuit. When the input connector is connected to the DC voltage source, the control circuit bypasses the input rectifier with respect to the input circuit, and connects only one of the primary windings to the output circuit while bypassing the other primary winding.

Abstract: A fault tolerant isolation system providing fault tolerant electrical isolation between different components receiving power from separate power sources regardless of which of the power sources fails. One power source provides operating voltage to an isolation device, which is a transceiver, buffer, quick switch, etc. The other power source activates a transistor switch coupled to the output enable input of the isolation device, and a current limit device is provided between the output enable and power inputs of the isolation device. In this manner, failure of either power source disables the isolation device and therefore provides fault tolerant isolation between the devices on either side. In the preferred embodiment, the isolation device acts as a high impedance open switch if its power is removed thereby isolating the devices on either side.

Abstract: A shunt connected energy stabilizing system with isolation switching for providing stored energy to loads or to a utility or industrial electrical distribution system or source of electrical power. An energy backup and recovery system stores energy in a superconducting magnet and releases the energy to a real power/reactive power (VARs) generator which in turn delivers energy to either the loads or to both the loads and the source of electrical power. During periods of voltage sag or power outage, an isolation switch provide a means for isolating the loads from the source of power so that energy can be supplied to the loads only to provide "ride-thru". In effect, the isolation of the load sheds this load from the power system, thereby boosting the rest of the electrical distribution to a level so that other loads on the power system are not disturbed by the voltage sags. By supplying energy to the loads only, small superconducting magnets can be used thereby providing economic and size advantages.

Abstract: The system comprises a central module supplying a distribution network, for example formed by a bus, with permanent DC power. Terminal modules, located near the loads, convert the DC power distributed by the distribution network into DC or AC electrical power adapted to the requirements of each load. A communication bus enables data communication between the various modules.

Abstract: An AC uninterruptible power source is disclosed that provides multi-phase wer output signals for actual use and a selectable single phase power output signal for use in testing. The AC uninterruptible power source further comprises at least one battery. The single phase output signal is connected to a dummy load by means of a power switch of the break-before-make type. The invention further includes the dummy load as preferably having metering capabilities to measure the frequency, current, and voltage parameters of the single phase output signal. The arrangement of the present invention allows for the single phase output to be mated to the dummy load without the need of removing input power to the AC uninterruptible power source so as to reduce, or even eliminate, transient caused failures to the AC uninterruptible power source and to its sensitive load equipment which the power source services.

Abstract: A shunt connected energy stabilizing system with isolation switching for providing stored energy to loads or to a utility or industrial electrical distribution system or source of electrical power. An energy backup and recovery system stores energy in a superconducting magnet and releases the energy to a real power/reactive power (VARs) generator which in turn delivers energy to either the loads or to both the loads and the source of electrical power. During periods of voltage sag or power outage, an isolation switch provides a way for isolating the loads from the source of power so that energy can be supplied to the loads only to provide "ride-thru". In effect, the isolation of the load sheds this load from the power system, thereby boosting the rest of the electrical distribution to a level so that other loads on the power system are not disturbed by the voltage sags. By supplying energy to the loads only, small superconducting magnets can be used thereby providing economic and size advantages.