A master battery management unit including a sensing unit generating pack information of the battery pack, a first master power supply unit generating a first operating voltage using voltage of the battery pack, a communication unit outputting a first switching signal in response to the first operating voltage supplied from the first master power supply unit, a second master power supply unit generating a second operating voltage using the pack voltage in response to the first switching signal, and a control unit operating using the second operating voltage supplied from the second master power supply unit, and testing a preset item based on at least one of the pack information and module information.

A modular photovoltaic (PV) array system includes a PV array installed onto a fleet vehicle such as a trailer, bus etc., a host control system into which a plurality of fleet vehicles can connect to collectively generate electricity, and a subscriber system which collectively tracks energy generation and allocates respective contributions to the system.

A power converter circuit includes a monitoring module that monitors a DC power source, the monitoring module comprising a microcontroller. The power converter circuit also includes a temperature sensor providing temperature data to the microcontroller. In response to an indication from the temperature data of a failure or a problem, the microcontroller changes a parameter of the power converter circuit.

A load control system for controlling the amount of power delivered from an AC power source to a plurality of electrical load includes a plurality of independent units responsive to a broadcast controller. Each independent unit includes at least one commander and at least one energy controller for controlling at least one of the electrical loads in response to a control signal received from the commander. The independent units are configured and operate independent of each other. The broadcast controller transmits wireless signals to the energy controllers of the independent units. The energy controllers do not respond to control signals received from the commanders of other independent units, but the energy controllers of both independent units respond to the wireless signals transmitted by broadcast controller. The energy controller may operate in different operating modes in response to the wireless signals transmitted by the broadcast controller.

Systems and methods for monitoring, logging, and managing data transformations and data streams of energy management (EM) data energy data sources.

A method for handling surplus or deficit of energy in local energy systems (30) is presented. The method comprising; determining an accumulator status based on data pertaining to an accumulator (20) of a moveable device (10); determining energy status of each of a plurality of local energy systems (30) based on data pertaining to the respective local energy system 30; scoring, based on the determined accumulator status and the determined energy statuses, each of the local energy systems (30); determining, based on the respective scores of each of the plurality of local energy systems (30), a local energy system (30), among the plurality of local energy systems (30), to which the moveable device (10) is to be directed. Also a server (40) configured to handling surplus or deficit of energy in local energy systems is presented.

Methods, systems, and devices for managing a power system are described. A power management system may include multiple interconnected power supply and control units that plug directly into a standard residential power outlet. A power management system may include multiple interconnected power supply and control units that plug directly into a standard residential power outlet. Together, the interconnected power supply and control units may provide a distributed power backup system in the form of a home energy nano-grid. The power management system may provide backup power, power sharing, and device inter-connectivity while enabling efficient scalability and the robustness of a distributed system. The power management system may also include a power usage monitoring unit, which may gather data and use it to improve the efficiency of power usage throughout the home.

A power control device for controlling the power supplied to a device connected to it is connected wirelessly by a mesh network to a local controller and provides information on the power usage of the connected device remotely. The power control device can receive a function assignment remotely and will control the connected device according to that function.

Some embodiments of the invention include a method and system for metering an electrical grid comprising at least one processor executing instructions from a non-transitory computer-readable storage medium of an electrical grid fault detection system. In some embodiments of the system, the instructions cause a processor to calculate a prediction of whether power delivery to at least a portion of the electrical grid is functioning abnormally using voltage sensing devices coupled to at least one feeder, where one or more of the voltage sensing devices are responsive to a determination that the power delivery is functioning abnormally. Further in some embodiments, the determination includes the electrical grid fault detection system receiving at least one signal or voltage reading from the electrical grid based at least in part on a sensed or received voltage level or range of voltage level.

A line connector for transmitting electrical signals includes a housing, a first electric connection configured to transmit a first electrical signal, a second electrical connection configured to transmit a second electrical signal, and a diagnostic device. The diagnostic device is configured to monitor the first electrical signal and detect a first status of the first electric connection, and to monitor the second electrical signal and detect a second status of the second electrical connection. The housing has a housing wall with a first optical indicator and a second optical indicator. The first optical indicator is configured to generate a first optical signal representing the first status, and the second optical indicator is configured to generate a second optical signal representing the second status.