A method of operating an aircraft electrical power distribution system comprises determining a measure of ambient pressure; and setting a target operating voltage in accordance with the measure of ambient pressure. The method further comprises controlling the operating voltage in accordance with the set target operating voltage. The target operating voltage may refer to a distribution voltage of the aircraft. An aircraft electrical power distribution system is also disclosed, comprising: a sensor configured to determine a measure of ambient pressure; a controller configured to set a target operating voltage in accordance with the measure of ambient pressure, and a voltage regulator configured to regulate the operating voltage in accordance with the set target value.

An electronic device for series connection on a power supply line, wherein the device comprises a plurality of switches comprising at least a first switch, a second switch, and a third switch. The device further comprises a control unit configured to perform the following steps: operating error detection means during operation of the device in a first mode; operating the device in a second mode in response to an erroneous power state being detected by the error detection means during operation of the device in the first mode; operating the error detection means during operation of the device in the second mode in order to determine an error location associated with the erroneous power state detected by the error detection means during operation of the device in the first mode.

An electronic device for series connection on a power supply line, wherein the device comprises a plurality of switches comprising at least a first switch, a second switch, and a third switch. The device further comprises a control unit configured to perform the following steps: operating error detection means during operation of the device in a first mode; operating the device in a second mode in response to an erroneous power state being detected by the error detection means during operation of the device in the first mode; operating the error detection means during operation of the device in the second mode in order to determine an error location associated with the erroneous power state detected by the error detection means during operation of the device in the first mode.

A power converter for a power system performs power control of a power system by using a first control value derived based on a first stabilization command value for causing a voltage on a first DC bus to be within a first range and a first control command value different from the first stabilization command value. A power converter for a solar cell performs power control of a solar cell by using a second control value derived based on a second stabilization command value for causing a voltage on a second DC bus to be within a second range and a second control command value different from the second stabilization command value. The first range is narrower than the second range.

An electrical outlet for a recreational vehicle includes a high voltage AC electrical power receptacle and a low voltage DC electrical power receptacle that is powered independently of the high voltage AC receptacle so that the DC receptacle can remain energized when the AC receptacle is disconnected from an AC power supply. The DC and AC receptacles, located at the same electrical outlet, are wired separately to different power sources. This allows the recreational vehicle's electrical storage batteries to continue energizing the DC receptacle, at the same outlet as the AC receptacle, even when it is not possible or desirable to energize the AC receptacle. Therefore, limited functionality can be maintained at the outlet even when no AC mains, onboard generator, or AC-to-DC inverter is connected or in operation.

An electrical outlet for a recreational vehicle includes a high voltage AC electrical power receptacle and a low voltage DC electrical power receptacle that is powered independently of the high voltage AC receptacle so that the DC receptacle can remain energized when the AC receptacle is disconnected from an AC power supply. The DC and AC receptacles, located at the same electrical outlet, are wired separately to different power sources. This allows the recreational vehicle's electrical storage batteries to continue energizing the DC receptacle, at the same outlet as the AC receptacle, even when it is not possible or desirable to energize the AC receptacle. Therefore, limited functionality can be maintained at the outlet even when no AC mains, onboard generator, or AC-to-DC inverter is connected or in operation.

A power distribution assembly that includes a planar substrate, a set of switchable elements arranged on the planar substrate, a conductive bus bar underlying the planar substrate and interconnected with the set of switchable elements, and a set of power connections. The power distribution assembly distributes power from a power source to one or more loads.

A power distribution assembly that includes a planar substrate, a set of switchable elements arranged on the planar substrate, a conductive bus bar underlying the planar substrate and interconnected with the set of switchable elements, and a set of power connections. The power distribution assembly distributes power from a power source to one or more loads.

Embodiments of the present invention disclose a troubleshooting method and device. The method is applicable to an inverter power supply system in the power supply device. The inverter power supply system includes at least two DC/DC modules, and any one of the DC/DC modules includes fuses F1 and F2, relays K1 and K2, inductors L1 and L2, switch modules Q1, Q2, and Q3, and direct current bus capacitors C1 and C2. The troubleshooting method includes: if it is detected that any one of the DC/DC modules is faulty, determining a faulty component in the faulty module; and if the faulty component is a C1 or a C2, and the inverter power supply system is in a battery discharging mode, turning on a Q2 in the faulty module, so that an F1 and an F2 of the faulty module are blown, to disconnect the faulty module from another DC/DC module.

A system and a method for distributing electric power from a power source of electricity to power fracturing operations includes a plurality of circuit breakers, each circuit breaker including a first circuit breaker connector and a second circuit breaker connector, each of which outputs electric power to a corresponding transport at a first voltage level, a power source connector that receives electric power from a power source of electricity at the first voltage level, and a black start generator that generates electric power at a second voltage level and that supplies the generated electric power to start the power source of electricity.