Application Notes
FUNCTION, PRODUCTS APPLICATIONS DCFiltering
Local thermal treatment, metallic surface hardening, pipewelding, tin coating treatment,... The purpose of the product is to filter the high frequencyripple coming from the converter in order to avoid rejectionand perturbation on the network.TPC has developed controlled-self healing range allowingreliable and competitive solution compare electrolytic
technology.See calculation example how to replace electrolytictechnology.Note that on new developments based on IGBT converter,manufacturer wish to have a main DC filter close to the con-
verter and some light filters sprayed on the line. Products to offer
FUNCTION, PRODUCTS DCFiltering
Main DC Filter FFLC 1120 to 8800µFup to 1200VdcAdditional The purpose of this filter is to smooth the low frequencyripple coming from the bridge (up to 360 Hz) and to filter the high frequency ripple coming from the converter
(15/20 kHz)*.
FFLI/FFLB 58 to 800µFup to 1900VdcDCFilter FFVE 12 to 400µFup to 1900Vdc FFG 5 to 160µFup to 1900Vdc *Frequency will be lower than capacitor resonance frequency, onrequest, TPC can propose specific models for high frequency. Protection of semi-conductors
Overvoltage and clamping due to switching of semi-conductors. Main criteria are:High rms. current and good behavioragainst overvoltage are needed. Products to offer
Thyristors andGTOsnubbers Products to offer
FPX 0.5µF to 6µFup to 4600V*IGBT clamping FFG 5 to 160µF600 to 1900Vdc
FSB 0.1 to 2.5µFup to 2kVdc FFVE 12 to 400µF300 to 1900Vdc
FFVE 12 to 400µFup to 1.9kVdc FFVI 47 to 275µF500 to 1100Vdc
*higher voltage on request FFLI/FFLB 58 to 800µF680 to 1900Vdc FFLC 1120 to 8800µF680 to 1200Vdc
Tuning
In order to obtain the requested frequency, a capacitor isneeded to tune with the inductance. The main characteristic
of this capacitor is the reactive power (express in kVar) versus
frequency.
APPLICATIONS
Products to offer MedicalX-ray, scanner power suppliesTractionBattery chargerIndustrialAll application requesting power supplies FAI6 10 kHz F 100 kHz1.5 to 60µF200 to 650Vrms
160 to 1280kVar FAI1 to 4 100 kHz F 500 kHz110 to 4000nF300 to 600Vrms
100 to 300kVar
TRACTION
APPLICATIONS
Speed converter for power for mass transit and/or people
mover system.
APP NOTES 55