Abstract: An exemplary embodiment provides a power conversion system comprising a first battery module, a second battery module, first and second transformers, and first, second, and third current source converter bridges. The transformers can have low voltage sides and high voltage sides. The first bridge can be configured to connect the battery modules and the low voltage sides of the transformers. A mid-point of the serial connection of the battery modules can be connected to a mid-point of the series connection of the transformers. The second bridge can connect to the high voltage side of the first transformer and one or more ports configured to transmit electrical power to and/or receive electrical power from an electrical load and/or source. The third bridge can be configured to connect to the high voltage side of the second transformer and the one and one or more ports.

Abstract: An electrical distribution system for personal water craft. The primary components include a digital switching device; a series of power lines; and one or more remote controls, a control panel, or both. The digital switching device is preferably a bank of solid state relay switches controlled by an MCU. The control panel also has an MCU. The control panel MCU communicates with the digital switching device MCU. This allows signals from the control panel to travel on a single communication cable to the digital switching device, significantly reducing the control panel footprint compared to prior art control panels. When a radio frequency (RF) receiver is provided, the electrical distribution system may receive signals from a remote control. The remote control may be utilized in addition to or in lieu of the control panel. Power lines run from the digital switching device to wherever power is desired in the vessel.

Abstract: Any one of a plurality of to-be-grouped devices in a power supply system reports an initial bus voltage to a topology detection device; and reports a current bus voltage after delivering a bus voltage adjustment instruction to a target reference device. The bus voltage adjustment instruction instructs the target reference device to adjust a voltage. The target reference device receives the bus voltage adjustment instruction and adjusts the voltage according to the bus voltage adjustment instruction. The topology detection device obtains the initial bus voltage and the current bus voltage of the plurality of to-be-grouped devices, and determines, based on a difference between the initial bus voltage of the plurality of to-be-grouped devices and the current bus voltage of the plurality of to-be-grouped devices, whether the target reference device and a target to-be-grouped device are connected to a same bus.

Abstract: Bidirectional energy transfer systems are provided for transferring energy between an electrified vehicle and other structures. The bidirectional energy transfer system may include a home energy management system having a dark start energy storage resource. The home energy management system may enter hibernation mode when the dark start energy storage resource reaches a low power state. The home energy management system may subsequently exit hibernation mode using a variety of recovery strategies when the electrified vehicle returns to the structure or near when the vehicle is expected to return to the structure. Placing the home energy management system in hibernation mode ensures that the dark start energy storage resource will have a sufficient amount of energy for powering system loads necessary to initiate the energy transfer from the vehicle to the structure during the grid power outage.

Abstract: An electrical architecture for an aircraft includes a first propulsion power distribution system distributing a high DC voltage, a second propulsion power distribution system distributing a high DC voltage, a first AC power distribution system distributing a three-phase AC voltage, a second AC power distribution system distributing a three-phase AC voltage, a first inverter connected between the first propulsion power distribution system and the first AC power distribution system, a second inverter connected between the second propulsion power distribution system and the second AC power distribution system, and an electronics module connected to the first inverter and to the second inverter in order to control the frequency of the three-phase AC voltage generated by the first inverter and the frequency of the three-phase AC voltage generated by the second inverter.

Abstract: Methods, apparatuses, and systems for detecting arbitrarily located SPOs between a utility power source and a POI of an IBDER and mitigating the effects of such a SPO. Generally, a SPO will cause certain persistent, predictable variations and differences in voltages between phases. The standard deviations of the per-phase voltages can be calculated for each of a series of successive time intervals, and a difference value between the maximum and minimum standard deviation for each interval can be determined. If the difference value exceeds a threshold value for successive intervals covering a predetermined time period, the presence of a SPO is reliably indicated, and the IBDER can be automatically disconnected to prevent damage to connected equipment. The threshold value, number of intervals, and time period can be selected to provide appropriate sensitivity and selectivity.

Abstract: An apparatus for use in a magnetic induction wireless power transfer system comprises at least one booster coil positioned adjacent an active coil of a magnetic induction wireless power transfer system and a capacitor electrically connected to the booster coil. A capacitance of the capacitor is selected such that a current in the booster coil is approximately equal to a current in the active coil during wireless power transfer. The apparatus may comprise at least one shielding coil positioned adjacent an active coil of a magnetic induction wireless power transfer system, a capacitor electrically connected to the shielding coil, and a conductor positioned adjacent the shielding coil opposite the active coil. The conductor encompasses the shielding coil.

Abstract: An electrical transmission system especially suited for wind turbines being safer for wildlife. The transmission system using a first electrical conductor communicating an alternating electrical current at a first phase with a second electrical conductor in proximity to the first electrical conductor. The second electrical conductor communicating a second alternating electrical current at a second phase.

Abstract: An exemplary renewable-energy system including a back end system coupled to an isolated DC power source and a generator powered by a renewable energy source and including first circuitry configured to convert first AC power from the generator to DC power and to provide the DC power to a DC power bus, the first circuitry further configured to initiate operation using power from the isolated DC power source. The example system further includes a front end system comprising an inverter coupled to an isolated DC power source generator. The inverter includes a ground isolation monitor interrupter (IMI) circuit coupled to the DC power bus and configured to receive the DC power and convert the DC power to second AC power for provision to a power grid. The isolated power source generator ground-isolates third AC power of the power grid for conversion to DC power for the isolated DC power source.

Abstract: A modular device for accumulation and delivery of electrical energy, including a structure including a plurality of shelving, an air conditioning system, and at least one bi-directional electronic multi-level converter defining a transformerless AC/alternating current output and including three three-phase legs connected to the output and each including a plurality of modules connected in series, a plurality of inductors arranged on a respective output line from the legs, and a firmware control device to modify current and voltage output from the modules. Each of the modules includes a first stage AC output including an IGBT device, isolated to ground, capable of connecting in series with the other modules of a respective leg and capable of generating an output voltage waveform, a second DC/DC conversion stage defining an input, and at least one battery connected to the input. The battery is an electric vehicle battery (EVB).

Abstract: A system for balancing voltages in solar substrings in a first solar panel includes an inductive balancer circuit. The inductive balancer circuit includes a first power level pair and a second power level pair each coupled to the solar substring, and including: a pair of switches arranged in series; a pair of capacitors arranged in series and connected in parallel to the first pair of switches; and an inductor arranged between the first pair of switches and the first pair of capacitors. The system further includes a controller coupled to the inductive balancer circuit and configured to: oscillate states of the pair of switches at a duty cycle; balance voltages across the first power level pair and the second power level pair; and generate a total voltage output that is a multiple of a nominal operating voltage of a most-illuminated solar substring.

Abstract: An electric power system is disclosed herein. The electric power system may manage and store electric power and provide uninterrupted electric power, derived from a plurality of electric power sources, to an electric load. The electric power system may contain an energy storage unit and generator assembly. The electric power system may connect to a power grid and renewable energy sources, and may charge the energy storage unit using the power grid, renewable energy sources, and/or generator assembly. The electric power system may be configured to determine load power usage and environmental factors to automatically and continuously modify a charging protocol to, for example, provide high efficiency and/or self-sufficiency from the power grid. The electric power system may operate entirely off-grid and may provide electricity to the load without interruption to power.

Abstract: A method and system for mitigating low-frequency oscillations of a power system network (PSN). The method includes receiving multiple data sets from the PSN, comprising values of terminal voltage, a real power, and a reactive power. The method further employs the multiple data sets to a fuzzy c-means clustering technique, a deep learning technique and a whale optimization algorithm to generate a pair of parameter values for a power system stabilizer controlling a steady-state of the power system network.

Abstract: Embodiments disclosed herein may generate and transmit power waves that, as result of their physical waveform characteristics (e.g., frequency, amplitude, phase, gain, direction), converge at a predetermined location in a transmission field to generate a pocket of energy. Receivers associated with an electronic device being powered by the wireless charging system, may extract energy from these pockets of energy and then convert that energy into usable electric power for the electronic device associated with a receiver. The pockets of energy may manifest as a three-dimensional field (e.g., transmission field) where energy may be harvested by a receiver positioned within or nearby the pocket of energy.

Abstract: Disclosed are systems and methods to provide continuous power to electrical devices using a portable power supply unit and a portable power charging unit. The portable power supply unit may include a first battery providing a first DC output, at least one first inverter for converting said first DC output to a first AC output for powering the electrical devices and for converting a first AC input to a first DC input for charging said first battery. The portable power charging unit may include a second battery for providing a second DC output, a second inverter for converting said second DC output to a second AC output; and transmitting the second AC output to the first battery using charging ports on respective units such that said second AC output replaces said first AC output for powering said electrical devices, and replaces said first AC input for charging said first battery.

Abstract: A crowdsourced energy system includes a plurality of distributed energy resources managed by crowdsourcees of the system, a power network to which the distributed energy resources are connected, and a system operator that manages energy trading transactions and energy delivery within the system, the system operator operating at least one computing device configured to: obtain day-ahead peer-to-peer energy trading transaction requests from crowdsourcees for energy to be delivered from the distributed energy resources, estimate day-ahead energy load and solar forecasts, determine optimal power flow for the delivery of energy, and schedule delivery of energy from the distributed energy resources across the power network based upon the energy trading transaction requests, the estimated forecasts, and the determined optimal power flow.

Abstract: A system to deliver power to a load in a transport vehicle has: (a) a battery; (b) a super capacitor bank; (c) a bidirectional DC/DC converter configured to transfer power to/from the super capacitors in order to absorb/supply power from/to the load, and configured to transfer power between the super capacitors and the battery and/or the load in order to charge the super capacitor from the battery or load or charge the battery/load from the super capacitors in a controlled way (d) a hybrid controller configured to identify when pulsed power is required to/from the load, and based on a charging pulse profile, supplying a plurality positive and/or negative current pulses to the battery.

Abstract: A method for maintaining reliability of a distributed power system including a power converter having input terminals and output terminals. Input power is received at the input terminals. The input power is converted to an output power at the output terminals. A temperature is measured in or in the environment of the power converter. The power conversion of the input power to the output power may be controlled to maximize the input power by setting at the input terminals the input voltage or the input current according to predetermined criteria. One of the predetermined criteria is configured to reduce the input power based on the temperature signal responsive to the temperature. The adjustment of input power reduces the input voltage and/or input current thereby lowering the temperature of the power converter.

Abstract: A transformer circuit (100) for an electric vehicle comprises an input (104); an output (106); and a transformer (108) located between the input and the output. The transformer comprises a primary winding (110) connected to the input; and a secondary winding (102) connected to the output. At least one of the primary winding and the secondary winding comprises a first split winding (112) and a second split winding (114). The first split winding is configured for carrying a higher current than the second split winding. The circuit comprises switching means (116) configured to, where the primary winding comprises the first and second split windings, selectively connect the first split winding to the input, or connect the first and second windings in series to the input, and where the secondary winding comprises the first and second split windings, selectively connect the first split winding (112) to the output (106), or connect the first and second split windings (112, 114) in series to the output.

Abstract: There is described a wireless power transfer system utilizing a new excitation-quadrature-quadrature transmitter pad which includes one excitation coil and at least two decoupled quadrature auxiliary coils. A described resonant tank design method is proposed for constant-current charging and zero phase angle conditions. When there is a lateral misalignment in the receiver pad, the auxiliary coil that is better coupled with the receiver pad conducts more current than the more distant auxiliary coil does, reducing the leakage magnetic field in the surrounding area and/or improving transmission efficiency.