A system and method for optimizing power grid operations and enhancing the life of switching components therein is provided. Current meteorological information of a region of operation of the power grid is collected during operation thereof, along with historical meteorological data of the region. A plurality of prediction models are executed using the current meteorological information and/or the historical meteorological data and a meteorological parameter of the region is forecast by selectively combining outputs of at least some of the executed prediction models, the meteorological parameter being a parameter that causes a renewable energy source in the power grid to generate power. The forecasted meteorological parameter is compensated with physical models and the historical meteorological data, and optimal switching operations of switching components in the power grid are computed based on the compensated forecasted meteorological parameter, with the switching components being controlled based on the computed optimal switching operations.

A system for managing a plurality of distributed energy resources associated with a structure is disclosed. The structure is at the edge of an electric utility network and receives electric power from the network and may include, for example, a house or building. The structure has distributed energy resources such as solar panels or an electric vehicle charging devices. The system comprises a monitoring unit configured to be electrically coupled to a panel assembly of the structure and a plurality of communication interfaces coupled to the monitoring unit and configured to serve as an access point for the distributed energy resources. The monitoring unit is configured to partially monitor or control functionality of a given distributed energy resource of the plurality of distributed energy resources that is utilizing the access point. The monitoring unit is configured to pass communications between the given distributed energy resource and a vendor associated with the given distributed energy resource.

A new energy linkage charging system and a storage medium are provided. The system includes a charging interface configured to charge an electrical vehicle with an electrical energy through a converter and a third circuit in response to receiving a charging instruction; a power storage module configured to store the electrical energy and deliver the electrical energy to the charging interface; a power grid charging module and a power generating module configured to deliver the electrical energy to the charging interface and the power storage module; a control module configured to determine a power storage instruction based on power storage module information, and determine the charging instruction and send the charging instruction to the charging interface based on a charging request in response to obtaining the charging request; and an interaction module in communication connection with the control module and configured to obtain the charging request.

A control device performs a first supply process of controlling a voltage converter to supply power from a solar panel to a high-voltage battery via the voltage converter while setting input-output power of a low-voltage battery to zero on the condition that a supplied power value is determined to be equal to or more than a specified power value. The control device performs a second supply process of controlling the voltage converter to supply power from the solar panel and the low-voltage battery to the high-voltage battery via the voltage converter on the condition that the supplied power value is determined to be less than the specified power value. The control device sets the specified power value based on one or more of a first index value indicating the degree of deterioration of the low-voltage battery and a second index value indicating whether the low-voltage battery is likely to deteriorate.

A method and apparatus is disclosed relating to smart Microgrids or off-grid solar systems with grid power integration supported by AC assisted off-grid power inverters that can (1) intelligently and selectively pull power from one or multiple DC sources including solar panels, wind generators, and batteries based on certain criteria; (2) invert DC power to AC power as generated AC power; (3) intelligently pull power from a connected AC source including grid AC, a gas generator, or a wind generator as input AC power; (4) combine the generated AC power with the input AC power; (5) supply the combined AC power, or the generated AC power, or the input AC power to an off-grid circuit to power various types of AC loads; (6) send no power to the connected AC source; (7) maximize DC power production; (8) minimize the consumption of input AC power; and (9) achieve good system performance under DC and AC power variations and load changes.

An inverter system includes a plurality of inverters and a communication apparatus. The inverter is configured to convert a direct current into an alternating current. A first inverter is connected to at least one second inverter through a power line, and the first inverter communicates with the second inverter through the power line based on a first protocol stack. The communication apparatus is connected to the first inverter. A second protocol stack and a third protocol stack are included. The communication apparatus is configured to communicate with the first inverter based on the second protocol stack, and communicate with a management device based on the third protocol stack.

The present invention relates to a method for powering a motor directly from a photovoltaic module, wherein the motor is adapted to drive a piston compressor pump, the method comprising the steps of determining an available amount of power from the photovoltaic module, and starting the motor if the available amount of power exceeds a predetermined power level, repeatedly determining, within a predetermined time period, an available amount of power from the photovoltaic module while operating the motor, and adjusting the speed of rotation of the motor in accordance with the repeatedly determined available amount of power. The present invention also relates to a power unit for powering a motor directly from a photovoltaic module, and to a cooling device for cooling pharmaceuticals.

A power conversion system comprises a DC element, a source inverter interfacing an AC source and the DC element, a load inverter interfacing a load on the DC element and a controller. Voltage of an output of the load inverter is controlled by a controller to reduce power consumption according to a variable charge state of the DC element.

One or more embodiments relates to a smart inverter used in a photovoltaic (PV) generation system. In one embodiment, the smart inverter includes a PV control logic device; and at least one low pass filter coupled to and in communication with the at least one PV control logic device.

An electronic device including an antenna which is used for near field communication and converts to electrical power a magnetic field generated when near field communication is performed with an external device, a battery which is chargeable by at least part of the electrical power, and a processor which determines whether or not a predetermined condition has been satisfied, and controls charge of the battery by the part of the electrical power on basis of a result of the determination.