Zero Emissions Technology Inc.

Nathaniel M Johnson

S Edward Neister

Carl F Butler, Deceased

Edward Neister

A power supply method particularly adapted for use with an electrostatic particulate collection device to provide substantially ripple-free DC power for improved 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, produces minimum ripple voltage and current, without requiring additional, more expensive, and less reliable components.

Power supply for electrostatic devices

An electrical filter apparatus for an electrostatic precipitator, wherein the filter apparatus is a T-type or pi-type filter electrically connected to a high voltage output of an electrostatic precipitator power supply and an electrostatic precipitator electrode. The T-type filter comprises a first inductor electrically connected to the high voltage output and a capacitor that is also electrically connected to ground. A second inductor is connected to the first inductor and the electrostatic precipitator electrode. In another embodiment, a two-stage inductor assembly is provided having a third inductor member defined by a plurality of turns of a continuous length of wire, and a fourth inductor member defined by a plurality of ferrite beads in end-to-end relationship.

Electrostatic precipitator power supply circuit having a T-filter and

An improved two-stage, high voltage inductor assembly. The inductor assembly is particularly adapted for use in a power supply circuit for an electrostatic precipitator. The inductor assembly includes a first inductor member defined by a plurality of turns of a continuous length of wire, and a second inductor member defined by a plurality of ferrite beads in end-to-end relationship. The assembly changes the electrical characteristics of power generated by a power supply to increase the output voltage, decrease ripple, and decrease the amount of power required. The assembly also reduces the arcing and sparking which normally occurs, improving the collection time and efficiency of the precipitator.

Two-stage, high voltage inductor

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.

Power supply for electrostatic preciptator electrodes

A two-stage, high-voltage inductor assembly. The inductor assembly is particularly adapted for use in a power supply circuit for an electrostatic precipitator. The inductor assembly includes a first stage inductor member defined by a toroidal inductor member formed from a plurality of turns of wire to define an inductor member having a first inductance, and a second stage inductor member defined by a plurality of end-to-end ferrite elements carried on a copper conductor to define an inductor member having a second inductance. The first inductor member blocks the low to moderate frequency currents and voltages in the power output portion of an electrostatic precipitator power supply circuit, and the second inductor member blocks the intermediate and high frequency currents and voltages in such a circuit. The first and second inductor members can be carried on a single body member which can be of tubular construction and in which the first inductor member is exteriorly carried on the body member while the second inductor member, which is electrically connected with the first inductor member, is interiorly carried within the tubular body member.

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Laconia, NH, United States of America

Nathaniel M Johnson