US 8,797,707 B2 · Systems and methods of power conversion for electrostatic precipitators

Abstract

The disclosed technology describes methods and apparatus to convert and control power provided to a precipitator. An example embodiment of the disclosed technology includes a method for providing power to a device. The method includes receiving a first silicon controlled rectifier (SCR) signal and a second SCR signal from a controller device, generating a demand signal by the controller device based on a comparison of the first and second SCR signals, transmitting the demand signal to a power converter device, converting a first power signal from a first base frequency to a second power signal at a second base frequency, wherein the first base frequency is in the range of approximately 50 Hz to approximately 60 Hz and wherein the second base frequency is controlled in the range of approximately 100 Hz to approximately 1000 Hz, and switching the second power signal to the controller device.

Claims20

Dependent claims

A method of providing power to a device comprising:

receiving a first silicon controlled rectifier (SCR) signal and a second SCR signal from a controller device;
generating a demand signal by the controller device based on a comparison of the first and second SCR signals;
transmitting the demand signal to a power converter device;
converting a first power signal from a first base frequency to a second power signal at a second base frequency, wherein the first base frequency is in the range of approximately 50 Hz to approximately 60 Hz and wherein the second base frequency is controlled in the range of approximately 100 Hz to approximately 1000 Hz;
and
switching the second power signal to the controller device.

3 more elements

A system comprising:

a precipitator power frequency converter system including:
an insulated-gate bipolar transistor (IGBT) system;
a converter control system comprising a microprocessor in communication with the IGBT system;
and
a rectifier set in communication with the IGBT system;
wherein the microprocessor is configured to receive a first silicon controlled rectifier (SCR) signal and a second SCR signal from a transformer rectifier control device, and wherein the microprocessor is further configured for generating a switching signal to actuate the IGBT system based at least in part on a comparison of the first SCR signal and the second SCR signal;
and
wherein an input power is received by the precipitator power frequency converter system in a first base frequency range of approximately 50 Hz to 60 Hz and the precipitator power frequency converter system is enabled to selectively provide an output power in a second base frequency controlled in a range between 100 Hz and 1000 Hz.

5 more elements

Dependencies are inferred from the claim text.

Systems and methods of power conversion for electrostatic precipitators

Life of this patent

Systems and methods of power conversion for electrostatic precipitators

Life of this patent

Abstract

Claims20