Power supply for electrostatic preciptator electrodes

Details Power supply for electrostatic preciptator electrodes Power supply for electrostatic preciptator electrodes

1995-02-14

1997-05-20

Nguyen, Matthew V.

Electric power conversion systems

Current conversion

Using semiconductor-type converter

363125, H02M 706

Patent

active

056318189

ABSTRACT:
A power supply system particularly adapted for use with an electrostatic precipitator to provide substantially ripple-free DC power for improved precipitator operation. The power supply is adapted to receive three-phase AC power and to transform the AC power into high voltage DC power having a minimum of voltage ripple in the output. The power supply includes a multi-phase transformer having three primary windings, each of the primary windings having associated with it a pair of secondary windings. The primary windings can be either delta connected or wye connected. One of each of the secondary windings associated with one of the respective primary windings are connected together in a delta connection arrangement, and the remaining secondary windings are connected in a wye connection arrangement. Because the respective AC voltage outputs of each of the secondary windings is out of phase with the AC voltage outputs of the other secondary windings, the resultant combined DC output voltage, after the DC voltages have been rectified in a three phase, full-wave bridge rectifier stack, which produces minimal ripple voltage and current, without requiring additional, more expensive, and less reliable components.

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