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1. US20030172103 - Filter configuration, method for filtering an analog filter input signal, and power factor controller

Office
United States of America
Application Number 10377813
Application Date 28.02.2003
Publication Number 20030172103
Publication Date 11.09.2003
Grant Number 6753798
Grant Date 22.06.2004
Publication Kind B2
IPC
H03M 3/00
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
MCODING, DECODING OR CODE CONVERSION, IN GENERAL
3Conversion of analogue values to or from differential modulation
H02M 1/00
HELECTRICITY
02GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
MAPPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
1Details of apparatus for conversion
H02M 1/12
HELECTRICITY
02GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
MAPPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
1Details of apparatus for conversion
12Arrangements for reducing harmonics from ac input or output
H02M 1/42
HELECTRICITY
02GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
MAPPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
1Details of apparatus for conversion
42Circuits or arrangements for compensating for or adjusting power factor in converters or inverters
CPC
H02M 1/4225
HELECTRICITY
02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
MAPPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
1Details of apparatus for conversion
42Circuits or arrangements for compensating for or adjusting power factor in converters or inverters
4208Arrangements for improving power factor of AC input
4225using a non-isolated boost converter
H02M 1/12
HELECTRICITY
02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
MAPPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
1Details of apparatus for conversion
12Arrangements for reducing harmonics from ac input or output
Y02B 70/126
Y02P 80/112
Applicants Infineon Technologies AG
Inventors Feldtkeller, Martin
Agents Greenberg, Laurence A.
Stemer, Werner H.
Locher, Ralph E.
Priority Data 10042587 30.08.2000 DE
Title
(EN) Filter configuration, method for filtering an analog filter input signal, and power factor controller
Abstract
(EN)

A filter system and a method for filtering an analog signal includes an analog-to-digital converter with an input to which an analog filter input signal is supplied, and an output at which an impulse signal is available that includes a sequence of impulses, the number of the impulses per time unit depending on the magnitude of the filter input signal. The filter system is further provided with a counter system to which the impulse signal is supplied and that contains at least one counter. At least once during an interval of evaluation, a counter reading of the at least one counter is supplied to a digital-to-analog converter to produce an analog filter output signal, the amplitude of the filter output signal depending on the value of the counter reading. The filter system can be placed in a power factor controller.