Abstract: An energy storage system includes an energy storage component. It further includes heat generating electronics. It further includes a fluid circulator that transfers fluid between the energy storage component and the heat generating electronics. The circulator is controlled to alternatively transfer fluid from the battery to the heat generating electronics or from the heat generating electronics to the energy storage component based at least in part on a thermal state of the energy storage system.

Abstract: A split DC (Direct Current) bus inverter architecture includes a positive DC bus, a negative DC bus, and a neutral node. It further includes a split phase output. A first output of a DC-DC converter is connected to the neutral node and a second output of the DC-DC converter is connected to one of the positive DC bus or the negative DC bus.

Abstract: A wiring harness for a battery and inverter system includes a main cable. It further includes an inverter connector configured to plug the main cable into an inverter module. It further includes a first spur of the main cable terminating in a first-type battery device connector. It further includes a second spur of the main cable terminating in a second type battery device connector.

Abstract: In various embodiments, a process for configuring or commissioning a solar power system includes receiving, at a controller, hardware identifiers of a plurality of power electronics modules to be configured. Each of the plurality of power electronics modules of at least a portion of the plurality of power electronics modules is associated with a corresponding photovoltaic panel. A hub is configured to wirelessly communicate with the plurality of power electronics modules. The controller is physically connected to the hub and communicates with the hub via wiring that also carries power from photovoltaic panels to an inverter. The process includes configuring, by the controller, the plurality of power electronics modules using the received hardware identifiers.

Abstract: An inverter subsystem that includes a direct current (DC) bus, a DC terminal, and a power storage interface that is configured to be connected to power storage. The DC terminal is configured to be: (1) connected to the DC bus via an internally-facing side of the DC terminal and (2) connected to a load via an externally-facing side of the DC terminal. The load is powered via the DC terminal.

Abstract: A switch includes a bridge portion comprising a set of prongs that are inserted into an existing outlet of an electrical receptacle. It further includes a switched outlet that is connected to the bridge portion. At least a portion of the switched outlet is embedded in a wall. Electrical connection between the switched outlet and the existing outlet is controllable.

Abstract: A power system including an inverter comprising an LCL filter is disclosed. The LCL filter includes a first inductor, a capacitor, and a second inductor. The power system further includes a controller. The controller is configured to determine an electrical characteristic of an output of the inverter. It is further configured to, based at least in part on the determined characteristic of the output of the inverter, dynamically adjust damping of the LCL filter.

Abstract: A controllable main breaker includes a main breaker sized to fit within an existing panel slot of an electrical panel. The main breaker comprises a trigger to open the main breaker in response to a thermal fault or overcurrent event. The controllable main breaker further includes an auxiliary shell sized to fit within at least one adjacent breaker slot. The auxiliary shell includes a controllable actuator that mechanically opens the main breaker.

Abstract: A split DC (Direct Current) bus inverter architecture includes a positive DC bus, a negative DC bus, and a neutral node. It further includes a split phase output. A first output of a DC-DC converter is connected to the neutral node and a second output of the DC-DC converter is connected to one of the positive DC bus or the negative DC bus.

Abstract: A switch includes an insulating barrier that blocks an electrical conductivity path between a plug prong and a contact of an electrical receptacle. It further includes a switched alternative conductivity path between the plug prong and the contact of the electrical receptacle. A portion of the switch is inserted into the electrical receptacle. The switch receives the plug prong, and the switch is substantially flush with a wall that includes the electrical receptacle.

Abstract: A wiring harness for a battery and inverter system includes a main cable. It further includes an inverter connector configured to plug the main cable into an inverter module that includes: an inverter-end positive-DC power bus pin, an inverter-end negative DC power bus pin, and an inverter-end neutral power bus pin. It further includes a first spur of the main cable terminating in a first-type battery device connector that includes: a first-type battery module positive-DC power bus pin and a first-type battery device neutral power bus pin. It further includes a second spur of the main cable terminating in a second type battery device connector that includes: a second-type battery module neutral power bus pin and a second-type battery device negative DC power bus pin.

Abstract: A power system including an inverter comprising an LCL filter is disclosed. The LCL filter includes a first inductor, a capacitor, and a second inductor. The power system further includes a controller. The controller is configured to determine an electrical characteristic of an output of the inverter. It is further configured to, based at least in part on the determined characteristic of the output of the inverter, dynamically adjust damping of the LCL filter.

Abstract: A rapid shutdown system includes a PV (photovoltaic) generator. It further includes a DC (Direct Current)-DC converter receiving power from the PV generator and outputting power. The DC-DC converter outputs power at a high voltage state or a low voltage state. It further includes a DC bus coupled to the DC-DC converter to receive the power outputted by the DC-DC converter. The DC bus is coupled to a system comprising a load. The DC-DC converter transitions from the high voltage state to the low voltage state based at least in part on an output current of the DC-DC converter transitioning below a threshold.

Abstract: A power system including an inverter comprising an LCL filter is disclosed. The LCL filter includes a first inductor, a capacitor, and a second inductor. The power system further includes a controller. The controller is configured to determine an electrical characteristic of an output of the inverter. It is further configured to, based at least in part on the determined characteristic of the output of the inverter, dynamically adjust damping of the LCL filter.

Abstract: Controlling a load includes sensing a characteristic of a circuit. A device loads the circuit. It further includes, based at least in part on the sensed characteristic, determining whether the circuit is in a state in which load shedding should be performed. It further includes controlling a switch to control power from the circuit to the device.

Abstract: A controllable main breaker includes a main breaker sized to fit within an existing panel slot of an electrical panel. The main breaker comprises a trigger to open the main breaker in response to a thermal fault or overcurrent event. The controllable main breaker further includes an auxiliary shell sized to fit within at least one adjacent breaker slot. The auxiliary shell includes a controllable actuator that mechanically opens the main breaker.

Abstract: An inverter subsystem that includes a direct current (DC) bus, a DC terminal, and a power storage interface that is configured to be connected to power storage. The DC terminal is configured to be: (1) connected to the DC bus via an internally-facing side of the DC terminal and (2) connected to a load via an externally-facing side of the DC terminal. The load is powered via the DC terminal.

Abstract: A common reference signal is used by a plurality of serially-connected power optimizers to manage a plurality of photovoltaic panels. It is determined whether an individual voltage output exceeds an individual limit. If so, a corresponding photovoltaic panel in the plurality of photovoltaic panels is adjusted to reduce the individual voltage output and the combined voltage output, where the combined voltage output is based at least in part on (a) the individual voltage output and (2) at least one other individual voltage output associated with another power optimizer. It is determined whether the combined voltage output relative to the common reference signal exceeds a maximum offset. If so, the corresponding photovoltaic panel in the plurality of photovoltaic panels is adjusted to reduce the individual voltage output and the combined voltage output.

Abstract: A split DC (Direct Current) bus inverter architecture includes a positive DC bus, a negative DC bus, and a neutral node. It further includes a first capacitor between the positive DC bus and the neutral node. It further includes a second capacitor between the negative DC bus and the neutral node. It further includes a split phase output. A first output of a DC-DC converter is connected to the neutral node and a second output of the DC-DC converter is connected to one of the positive DC bus or the negative DC bus.

Abstract: A water heater auxiliary heating system includes a heat pump. It further includes a first tap to circulate water from a water tank to a heat exchanger within the heat pump. It further includes a second tap to circulate water back to the water tank. The heat pump is controlled by an energy management system to preferentially operate based at least in part on a status of a site energy system that the energy management system is configured to manage. The water tank stores excess energy that is generated locally at the site energy system.