IPM - International Perforation Management
fax : 0049 - (0) 1212-5-375-17-531
http://www.microperforation.com
http://www.microperforation.com.cn
http://www.deguodaguan.com/ipm/
http://www.dk3qv.de
Email : ipm@[EMAIL PROTECTED]
- werner-grosse@[EMAIL PROTECTED]
dual high power, high frequency, high voltage switching units
Patent DE 103.28.937.2
Introduction
On a high level operate engineering company develops a dual, high
power, high frequency switching unit which works with hybrid drives,
compact EMI safe semiconductor stages, sup****ting capacitors, high
voltage ferrite transformers to generate HV short pulses and sparking
groups. Advantages are based on uses of standard circuits with
extended semiconductors for e.g. nano, sub or micro perforation
applications, corona treatments etc. The company is looking for
science or industrial partners who are interested in a licence
agreement and / or technical co-operation.
Working principle
Industry application of electrostatic perforation for fast running
paper webs using IGBT, MOSFET or HVFET semiconductor power stages.
These circuits working as upward converters with power pulses in
ranges from 5 =B5S up to 25 =B5S and high current peaks up to 300 Amps on
a serial connected inductivity and loading capacity that the secondary
ferrite transformer coils supply sparking electrodes up to 50 KVss.
The circuit works itself with alternating clock frequencies and
changes of pulse widths a common load condenser and coupled primary
inductance of a ferrite high voltage transformer as upward power/pulse
converter and non resonance frequency operation.
A safety circuit logic and two hybrid drivers allows a alternately
switching of semiconductor A and B which generating higher operation
frequencies and power levels meanwhile the electrical and thermal
conditions remains on each in the same range as a single switching
unit.
Circuit advantages
A controlled pulse timing into a certain time window with a constant
or variable frequency generating hole sizes and hole sequences with
high voltage sparking through the material webs by nano or micro
perforation. The repeating frequencies of the entire circuit can up to
the double switching frequency as of each semiconductor stage.
A changeable current in the spark channel are feasible with total
switching frequencies up to 150 kHz. And in the same time the dual
semiconductor switching unit allows a double power level as just only
with one switching element is possible.
Dual IGBT, HVFETS or MOSFETS semiconductors in high power, high
current, high voltage circuits obtain in electrostatic nano, sub micro
perforation, corona treatment or other switching application
frequencies up to 250 KHz, power levels up to 30 KW and more. Higher
power efficiencies and harder switching periods are further
advantages.
In conclusion the approximately double frequency and power level
operation obtains higher switching efficiencies, much more perforation
power or higher corona treatment levels which are depend of the
industry application.
Nano, Sub Micro Perforation
Perforation results are now achieve for nano, sub and micro
perforation of flexible webs with ultra small ****es and products made
of these materials. Materials fini****ng are of interest for numerous
demands in the field of packaging, in filling, non wovens industry,
technical and science applications, etc. For many years fine and other
paper webs with base weights between 20 up to 150 g/sqm have been
perforated electro statically in large surface all over areas or zone
designs of 2.0 - 6.0 mm width.
****e sizes from 0.5 =B5m - 60 =B5m or 1 to 100 microns, ****e distributions
of up to 4 Million per sqm in area perforation or respectively 3OO
holes per sqcm by zone perforation and hole sequences up to 16 Million
per Second can be reached. Air permeabilities or ****osity ranges are
among from 50 up to 2,500 C.U. (ml/sqcm/min) respectively 3 to 50 l/
sqm/sec. (Franksystem ) by paper web speeds up to 450 m/min and web
widths up to 1200 mm are archive able.
Applications
Electrostatic perforation processes and machines, corona treatment,
surface treatment, high power switching devices, power supplies, AC&DC
and other switching converter systems, drives, etc.
Fine paper, cigarette, packaging or other fine paper industries,
corona system manufacture, switching device manufacture, high-power
converter equipment, AC/DC, DC/AC industry etc.
The new dual semiconductor circuit design allows applications to build
hybrid drives, semiconductor high-level stage, upward, downward or
other converters or generators which operating with sup****ting
capacitors, high-voltage ferrite transformers in an extremely compact
and modular design. Several advantages are the high efficiency of
pulse/power transmission and energy ratios.
Traditional corona or other type of medium generators up to 30 KHz
operation ranges are easy to modify to a double frequency and power
levels operation.
Patent downloads: http://www.microperforation.com/
englishengineerre****t.html
main link: http://www.microperforation.com/ipm-technology.html
Power Sources links
http://www.PowerSourcing.com/se/lasermicroholedrilling.htm
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http://www.PowerSourcing.com/sf/electricalpackaginglinedesign.htm
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