Charging control system and device

    公开(公告)号:US10075014B2

    公开(公告)日:2018-09-11

    申请号:US15888548

    申请日:2018-02-05

    Inventor: Kikuo Utsuno

    CPC classification number: H02J7/35 H02J7/0052 H02J7/0072 H02J7/355 Y02E10/566

    Abstract: A charging control system for charging a secondary battery from a solar battery, including a first path for transmitting power from the solar battery to the secondary battery, a second path for sensing the voltage of the secondary battery, and a comparison unit for comparing the solar battery voltage with the sensed voltage of the secondary battery. The first path includes a first interrupter, controlled by the comparison unit, which interrupts the first path to prevent discharge of the secondary battery through the solar battery when the solar battery voltage falls below the secondary battery voltage. The second path includes a second interrupter that interrupts the second path after the first path is interrupted, to prevent the secondary battery from discharging through the second path when not being charged through the first path.

    Bandgap modulation for underwater communications and energy harvesting

    公开(公告)号:US10009119B1

    公开(公告)日:2018-06-26

    申请号:US15451272

    申请日:2017-03-06

    Inventor: Nathan D. Hiller

    Abstract: A system is provided that includes a gateway node and terminal node. The gateway node includes an actuator configured to produce a light beam for propagation through a fluid, and a sensor configured to detect a reflection of the light beam. The terminal node is disposed within the fluid and includes an energy source and a photovoltaic layer adjacent to a reflective layer. The photovoltaic layer is switchably controlled between two modes, to convey a data stream associated with the reflected light beam to the sensor of the gateway node, the two modes including: a transmission mode wherein the light beam is transmitted through the photovoltaic layer and reflected by the adjacent reflective layer to the sensor of the gateway node, and a recharging mode wherein the photovoltaic layer is configured to capture photonic energy from the light beam for storage in the energy source.

    Optimization method for independent micro-grid system

    公开(公告)号:US09985438B2

    公开(公告)日:2018-05-29

    申请号:US14779951

    申请日:2013-10-14

    Abstract: The present application discloses a method for optimized design of an independent micro-grid system, the independent micro-grid system comprising diesel generators, wind powered generators, a photovoltaic array, and an energy storage battery, the optimization method referring specifically to a multi-objective optimization design model based on the independent micro-grid system. In terms of the optimization planning design model, the method takes into account a combined start-up mode for a plurality of diesel generators and a control strategy for coordinating between the energy storage battery and the diesel generators, such that the usage rate of renewable energy in the independent micro-grid is higher, and operations more economical and environmentally friendly. Regarding the stability of the system optimization planning design model, the method takes into account the reserve capacity needed for stability of the independent micro-grid. In terms of the solving algorithm of the optimization planning design model, the method employs a multi-objective genetic algorithm based on NSGA-II to implement multi-objective problem-solving, thereby allowing a multi-objective optimization of the three major objectives of economy, reliability, and environmental friendliness of an independent micro-grid system.

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