JP2008061361A5 - - Google Patents

Claims (2)

In a distribution system for supplying three phase voltages to and from a neutral point, the first phase end, the second phase end and the third phase end connected to each phase voltage and the neutral point Neutral point ends, and the balancer current flows between the first phase end, the second phase end, the third phase end, and the neutral point end. In the current balancer that reduces the balance,
The coil through which the first-phase balancer current flows and the coil through which the second-phase balancer current flows are configured so that the respective balancer currents generate magnetic fluxes in opposite directions in the first-phase iron core. Closely wound around the phase iron core to form a first phase coil pair,
One end of the coil through which the first-phase balancer current flows is connected to one end of one coil of a third-phase coil pair wound in close contact with the third-phase iron core, and The phase balancer current flows through the first phase and the third phase, and generates magnetic fluxes in opposite directions in the first phase iron core and the third phase iron core, respectively. One end of the coil through which the two-phase balancer current flows is connected to one end of one coil of the second-phase coil pair closely wound on the second-phase iron core, The balancer current flows through the first phase and the second phase, and generates magnetic fluxes in opposite directions in the first phase iron core and the second phase iron core, respectively. Phase coil pair, the second phase coil pair and the second The coil pairs of phases, to form a first coil pair group, each of said each of the coils constituting the coil pair have equal number of turns, are connected to a cyclically symmetric between the phases,
The other end of the one coil of the second phase coil pair in the first coil pair group is further connected to one coil of a first phase coil pair forming a next coil pair group; Between the second phase end and the neutral point end, the balancer current of the second phase alternates between the first phase and the second phase across a plurality of divided coil pair groups. A current balancer, wherein the coils are connected in series so as to flow while passing, and the coil pairs constituting the plurality of coil pair groups are connected cyclically and symmetrically between the phases.   A three-phase four-wire low-voltage distribution system using output power from the R phase, S phase, and T phase, in parallel with the load of each phase, between the R phase, S phase, T phase, and neutral wire A three-phase four-wire low-voltage power distribution system comprising the current balancer according to claim 1.