A power system is disclosed that includes a chassis configured to house one or more boards in which the boards are electrically coupled to one another. The boards are configured to receive external power and to output power using a plurality of different voltages. The boards are configured to receive power from at least one internal power source electrically coupled boards and to output power using a plurality of different voltages. The boards include one or more converters configured to convert power. The one or more converters are thermally interfaced with one or more portions of the chassis.

An energy supply system for a water-bound device and in particular to a corresponding method, including: a first DC voltage bus for a first DC voltage; a second DC voltage bus for a second DC voltage; and a first energy source which has at least two supplying electrical connections to the DC voltage buses, wherein at least one of the DC voltage buses has sections.

A power conversion apparatus includes M first slots, wherein each of M first slots is electrically connected to an input side of one of N first bus bars, and a respective first slot of the M first slots is electrically connected to a first module that can supply an alternating current or a direct current to the first bus bar electrically connected to the first slot. The apparatus further includes P second slots, wherein each of the P second slots is electrically connected between an output side of one of the N first bus bars and an input side of one of second bus bars, and a respective second slot of the P second slots is electrically connected to a second module that converts an alternating current into a direct current or that converts a direct current into a direct current.

An apparatus comprises a plurality of voltage sources, one or more processors embedded with the plurality of voltage sources, and memory storing processor executable instructions that, when executed by the one or more processors, cause the apparatus to modify duty cycles of the voltage sources, and to modify timing for each phase of a multiphase cycle. In some cases, the apparatus: transfers, for each phase of the multiphase cycle, power from a different source of a plurality of sources to a load; determines, for each phase of the multiphase cycle, an input voltage associated with the transferred power, an output voltage associated with the transferred power, and current from the source associated with the transferred power; determines a duty cycle associated with the source; modifies duty cycles of the voltage sources; and modifies timing for each phase of the multiphase cycle.

A vehicle control device includes a connection switching unit configured to switch the connection state to a state in which a second battery is solely connected to a first load when a voltage of a first battery is determined to be equal to or smaller than a first threshold value in a state in which the first and second batteries are connected to the first load, and after a first time has elapsed from switching to the second state, continue the state while the state of charge of the second battery is equal to or greater than a second threshold value, and switch the connection state to a state in which neither the first battery nor the second battery is connected to the first load when the state of charge of the second battery is smaller than the second threshold value.

A power supply system having a plurality of power systems is provided with a power output section in each of the power systems, an electrical load in each of the power systems, operating from power supplied by the power output section, main paths that connect the power output sections of adjacent ones of the power systems, an inter-system switch that establishes a conducting condition between the adjacent power systems by being turned on and establishes a disconnected condition between the adjacent power systems by being turned off, and an intra-system switch in each of the power systems, which is disposed on the main path between the power output section and the inter-system switch, and which establishes a conducting condition between the power output section and the electrical load by being turned on and establishes a disconnected condition between the power output section and the electrical load by being turned off.

Based on a first signal, a first voltage output circuit outputs a first output voltage which is based on a first voltage or does not output the first output voltage. Based on a second signal, a second voltage output circuit outputs a second output voltage which is based on a second voltage or does not output the second output voltage. When a level of the first voltage is lower than a reference level, a voltage detector circuit outputs the first signal such that the first voltage output circuit does not output the first output voltage and outputs the second signal such that the second voltage output circuit outputs the second output voltage. The second voltage output circuit outputs the second output voltage such that the second output voltage has a level of the first output voltage when the level of the first voltage is the reference level.

An apparatus, system and method of efficiently configuring a power distribution system includes the provision of a dual-bus power distribution assembly, each bus of which may be connected to power sources and where the circuit breakers are adapted such that power from either of the two buses can be routed to an electrical load to provide redundant or non-redundant power, as required. Each circuit breaker position is capable of being configured to connect between either of the two buses and an individual load equipment supply bus. The circuit breaker may be a plug-in type where one of the terminals is adapted by a part that may be installed in one of two orientations. In the first orientation a first bus is connected to the individual load equipment supply bus and in the second orientation the second bus is connected to the individual load equipment supply bus.

There are provided a power supplying system, an electronic apparatus, and a power supplying method capable of surely preventing an abnormal end even in a case where supply of external power is disconnected in an apparatus having no battery with a valid voltage. The supply system includes a first power feed unit (11) that preferentially outputs external power rather than internal power from a first battery (12) in an electronic apparatus (10), a second power feed unit (21) that preferentially outputs the external power rather than internal power from a second battery (22) in a connection apparatus (20), an external power feed connection unit (external power feed connection path (L3)) that connects an external power feed path (L1) to the first power feed unit (11) and an external power feed path (L2) to the second power feed unit (21), a selection unit (13) that selects one of the first power feed unit (11) and the second power feed unit (21), and a control unit (15) that causes the selection unit (13) to select a power feed unit that receives the internal power between the first power feed unit (11) and the second power feed unit (21).

A power supply system having a plurality of power systems is provided with a power output section in each of the power systems, an electrical load in each of the power systems, operating from power supplied by the power output section, main paths that connect the power output sections of adjacent ones of the power systems, an inter-system switch that establishes a conducting condition between the adjacent power systems by being turned on and establishes a disconnected condition between the adjacent power systems by being turned off, and an intra-system switch in each of the power systems, which is disposed on the main path between the power output section and the inter-system switch, and which establishes a conducting condition between the power output section and the electrical load by being turned on and establishes a disconnected condition between the power output section and the electrical load by being turned off.