A power converter apparatus (20) is provided with a lead-in board (1) in which alternating-current power received from power converting units (3A to 3D) is connected in parallel, and a connection base (2) including frames (UA to UD) for installing the powe...

A secondary battery system includes an assembly battery (2) which are composed of secondary cells (P11~P46), two voltage dividing resistances (31A and 31B) which equally divide a voltage across a cathode and an anode of the assembly battery (2) from the in...

In an uninterruptible power supply system, control units (11) of three uninterruptible power supply apparatuses (U1 to U3) are connected to each another by communication cables (C1, C2) to form one total control unit (13). The total control unit (13) bring...

There is provided a secondary battery system which converts direct current power supplied from secondary batteries (B1 to B3) into alternating current power by power converters (INV1 to INV3), and supplies the converted power to an electric power system on...

An output-power control apparatus is provided in an electric power system connecting a secondary battery system (2) and a power generator (3) in parallel, and controls output power of the electric power system. The output-power control apparatus detects ou...

In accordance with this invention, a system includes mechanical power generation devices 1 to 5 for outputting a mechanical power by combustion of a liquid or gas fuel, a plurality of generators 6 to 10 to be driven by the mechanical power generation devic...

A motor drive system in which a plurality of generators (6 to 11) driven by mechanical power generation apparatuses (1 to 5) are connected in parallel to a common distribution bus (12), and plural power conversion devices (61) connected to the common distr...

An alternating current motor driving system provided with a plurality of alternating current generators, a common distribution bus, a plurality of power conversion devices, a plurality of power conversion control circuits, and a plurality of alternating cu...