Methods and apparatus are provided herein. For example, a method for maintaining a power conversion system can include transmitting, to a computing apparatus in operable communication with the power conversion system, an alert message indicating non-working microinverters and which of the non-working microinverters are under warranty and eligible for replacement; receiving, from the computing apparatus, a request for replacement for the non-working microinverters; and transmitting, to the computing apparatus, an acknowledgment message indicating that the request has been successfully received and replacements for the non-working microinverters are being shipped.

The present disclosure provides a photovoltaic (PV) disconnect device used in an electrical system. The PV disconnect device includes a relay component electrically coupled to a feed circuit of a backup PV power generation system and a connector port electrically coupled to an energy control system. The PV disconnect device includes a sensor circuit to measure at least one of a voltage, a current, and a current frequency of the feed circuit of the backup PV power generation system. The PV disconnect device includes a controller operatively coupled to the relay component, the sensor circuit, and the connector port. The controller receives and processes the voltage, the current, and the current frequency measurements. The controller selectively actuates the relay component based on the processed voltage, current, and current frequency measurements.

Embodiments disclosed herein include a power management apparatus including a smart circuit breaker (“iCB”) that wirelessly communicates with one or multiple power consuming devices. The iCB also communicates with a power provider (power company) to manage preset power quotas for consumers. Aspects include management of device priorities such that devices with higher priorities receive power before those with lower priorities when quotas are exceeded for a consumer premises.

In one embodiment, a system includes a coordinated distribution optimization (CDO) system. The CDO system includes a processor configured to coordinate execution of a plurality of independent electrical network applications. Each of the plurality of independent electrical network applications is configured to alter one or more operational parameters of a power grid based on one or more respective objectives and based on power grid operational data, and the execution of the plurality of independent electrical network applications is coordinated by the CDO system to block the power grid from entering an abnormal state. The CDO system further comprises a network interface configured to receive the power grid operational data from a controller of the power grid, and wherein the power grid operational data comprises current values for the one or more operational parameters of the power grid.

A system of modules which control and measure energy usage at a building which are in communication with a software program executing on a remote server controlled by a third party. The third party said usage via the software program which communicates with the modules to modify energy usage and demand for energy and is responsible or liable for energy usage charges the building where the third party does not actually use the energy.

The present disclosure provides a programmable controller for monitoring battery performance and usage at a remote pump jack location. The disclosure provides an energy efficient controller and display system which allows the operator to quickly and accurately test batteries in an installation. It uses programmable logic to switch between system modes and decide which battery supplies power to the output. Further it will sense any high voltages at and disable the input from the faulty source. Further, the programmable logic is designed such that the mode selection process is automatic when the system is in operation. The purpose is to elongate battery and connected equipment life by preventing battery failure. The present disclosure also provides an easy and economical method of communicating potential battery failure and status to an operator via cell phone communication.

A battery pack management device capable of reducing power consumption while transmitting and receiving data between a master BMS and a slave BMS by using a wireless communication method. The battery pack management device according to the present disclosure includes: a master BMS including an external communicator, an internal communicator, and a master controller and a slave BMS including a power supply, a state measurement sensor, a slave wireless communicator, and a slave controller.

A device for electrically connecting a direct current (DC) microgrid to a DC bus of an electrical power network, which is operating at a higher voltage than the microgrid, comprises a pair of electrical port each configured for connection with either the DC bus or the microgrid; a DC-DC power converter operatively interconnecting the electrical ports for power transmission therebetween from a first voltage at the port connected to the DC bus to a lower second voltage at the port connected to the DC microgrid; a DC circuit breaker connected between the DC-DC power converter and one of the electrical ports for selectively conducting current therebetween; and a controller which is configured to communicate with constituent devices in the DC microgrid as well as a control center representative of the electrical power network in order to exchange information about electrical energy consumption in the DC microgrid and the larger network.

A circuit breaker includes an electromechanical switch, a current sensor, a voltage sensor, and a processor. The electromechanical switch is serially connected between a line input terminal and a load output terminal of the circuit breaker, and configured to be placed in a switched-closed state or a switched-open state. The current sensor is configured to sense a magnitude of current flowing in a path between the line input and load output terminals and generate a current sense signal. The voltage sensor is configured to sense a magnitude of voltage at a point on the path between the line input and load output terminals and generate a voltage sense signal. The processor is configured to receive and process the current sense signal and the voltage sense signal to determine operational status information of the circuit breaker and determine power usage information of a load connected to the load output terminal.

Present invention concerns charging of a power source of a device. A power usage pattern collector is configured to: collect data on power usage in a device, power source of which is chargeable, with regard to at least one particular criterion having influence on power usage in the device; and determine at least one power usage pattern by use of the collected data, said power usage pattern specifying power usage in the device with regard to at least one particular reoccurring criterion. A charging controller is configured to: acquire at least one power usage pattern; and control charging of a power source of a device by use of the at least one acquired power usage pattern. Present invention relates also to corresponding methods, correspondingly arranged computer program products, correspondingly arranged computer-readable recording media, and a system comprising the power usage pattern collector and the charging controller.