A stacked power supply system applied for an electronic device is provided. The stacked power supply system has an adapter and multiple battery modules. The adapter has a power plug, a power supply connector and a battery connector. The adapter is connected to an external AC power via the power plug, and converts the alternating current to the direct current, so as to supply power to the electronic device via the power supply connector. The battery modules have a battery set, a first connector and a second connector. The first connector of one of the battery modules is electrically connected to the battery connector of the adapter, the second connector of other neighboring battery modules is adapted to the first connectors of the neighboring battery modules, so as to form a stacked battery modules structure.

The present disclosure provides systems and methods for controlling an electrical system. The electrical system includes a plurality of backup power sources, such as an electric vehicle battery, a photovoltaic system, and an energy storage system. The electrical system includes a service panel electrically coupled to a plurality of electrical loads. The electrical system includes an energy control system electrically coupled to the plurality of backup power sources, the service panel, and a utility grid. The energy control system converts to a plurality of settings based on the number of available backup power sources. The energy control system determines the availability of the backup power sources according to a predetermined protocol such that one or more backup power sources are prioritized over other backup power sources.

A backup power supply is provided. The backup power supply provides batteries electrically coupled to a power cord for receiving power for charging the batteries and a power outlet for transmitting power for powering electrical equipment coupled to the power outlet. An inverter generator is operatively associated with the power cord, the batteries, and the power outlet in such a way that when the power cord experiences an electrical short the batteries switch from a reserve mode receiving power to a backup mode for transmitting power to the power outlet. The invertor generator is also adapted to sense reception of power through the power cord so as to switch from the backup mode to the reserve mode. Visible and audible indicators are provided for indicating the switching between the reserve mode and the backup mode.

An intrinsically safe (IS) luminaire disposed in a hazardous environment provides visible light and serves as a primary, auxiliary, back-up, and/or charging source of IS DC power for external devices disposed in the hazardous environment, such as process control devices and equipment. The luminaire includes a power converter that converts received power into DC power, an IS barrier that converts the DC power into IS DC power native to or utilized by a recipient external device, and a power distribution port via which IS DC power is delivered to the external device. In some configurations, the luminaire monitors communicates statuses, alerts, and/or other information corresponding to delivering IS DC power to one or more external devices to a host and/or portable communication device. The luminaire may include multiple IS barriers of same and/or different IS ratings, and may dynamically control activation/deactivation of the IS barriers and/or usages thereof.

An uninterruptible power supply includes a plurality of uninterruptible power supply modules each including a power converter, an input/output module that outputs power converted by the power converter to an outside of the uninterruptible power supply, and a disconnection module including a housing that houses disconnection switches that electrically disconnect each of the plurality of uninterruptible power supply modules individually.

A network system includes a higher-level device, a first intermediate device connected to the higher-level device, and a second intermediate device connected to the higher-level device. The first intermediate device is configured to control supply of an electric power to a first lower-level device via a first device being able to be controlled to interrupt. The second intermediate device is configured to control supply of an electric power to a second lower-level device via a second device being able to be controlled to interrupt, the second lower-level device being a redundant component for the first lower-level device.

A network system includes a higher-level device, a first intermediate device connected to the higher-level device, and a second intermediate device connected to the higher-level device. The first intermediate device is configured to control supply of an electric power to a first lower-level device via a first device being able to be controlled to interrupt. The second intermediate device is configured to control supply of an electric power to a second lower-level device via a second device being able to be controlled to interrupt, the second lower-level device being a redundant component for the first lower-level device.

The present disclosure provides a photovoltaic (PV) disconnect device used in an electrical system. The electrical system includes an energy control system electrically coupled to a utility grid. The electrical system includes a PV power generation system electrically coupled to the energy control system. The electrical system includes an energy storage system electrically coupled to the energy control system. The PV disconnect device is electrically coupled to the PV power generation system and the energy control system. The PV disconnect device electrically disconnects the PV power generation system from the energy control system.

According to at least one aspect of the disclosure, a bi-directional AC/DC converter is provided comprising a DC-power connection configured to be coupled to a DC-power source, an AC-power connection configured to be coupled to at least one of an AC-power source or a load, a multiplexer having a plurality of multiplexer switches, at least one interleaved bridge circuit having a plurality of bridge switches coupled to the multiplexer, and a positive DC node and a negative DC node coupled to the plurality of multiplexer switches, wherein the plurality of bridge switches includes at least two bridge switches coupled between the AC-power connection and at least one of the positive DC node or the negative DC node.

A power supply apparatus is coupled to an AC power source, a critical load, and a general load. The power supply apparatus includes a UPS, a generator system, a power conversion system, and a controller. The power conversion system includes a first power conversion path and a second power conversion path. The first power conversion path is connected to the critical load and an output side, and the second power conversion path is connected to the general load and an input side. The first power conversion path and the second power conversion path are jointly connected to a DC bus. When the controller determines that the AC power source is abnormal, the controller controls disconnecting the AC power source, and activates the UPS to supply power to the critical load so as to enable the first power conversion path and disable the second power conversion path.