Electrical transmission or interconnection systems – Plural load circuit systems – Control of current or power
Patent
1999-07-30
2000-08-15
Riley, Shawn
Electrical transmission or interconnection systems
Plural load circuit systems
Control of current or power
307 64, 307 72, H02J 100
Patent
active
061041025
ABSTRACT:
A multi-quality electric power supply apparatus supplies electric power based on the demand of various loads. The multi-quality electric power supply apparatus includes an inverter having a three-phase bridge configuration with an A/C output terminal connected to a distribution line of each phase of the three-phase four-wire A/C system. A capacitor is connected among two input terminals of the D/C side of the inverter and a neutral line of the three-phase four-wire A/C system. An uninterruptable power supply device is inserted from a node point to the distribution line of the inverter in a given distribution line of one phase on the load side to compensate for a voltage drop of the distribution line and to supply a given voltage in the distribution line during an interrupted power supply. A voltage drop compensation device is inserted from a node point to the distribution line of the inverter in another given distribution line of one phase on the load side, in order to compensate for the voltage drop of the distribution line, where each phase of the inverter is independently controlled and the electric power is supplied to the single phase load connected between the neutral line and each phase of the distribution line, respectively.
REFERENCES:
patent: 3614461 (1971-10-01), Speer
patent: 5210685 (1993-05-01), Rosa
patent: 5513090 (1996-04-01), Bhattacharya et al.
patent: 5514915 (1996-05-01), Kim et al.
Ise Toshifumi
Tsuji Kiichiro
Osaka University
Riley Shawn
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