DC/AC upward converters - high power - fast switching - 50 KVss

[bernado]

Introduction
high-tech operate engineering company IPM develops and patent grant
with DE10328937 a dual high power, high voltage, high frequency
switching unit which works with hybrid drives, compact EMI safe
semiconductor stages, supporting capacitors and high voltage ferrite
transformers to generate extremely short HV 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, medical applications, nano engineering, etc.

IPM is looking for science or industrial partners who are interested
in a licence agreement and/or technical cooperation for other wide
application fields.

Working principle
Industry application of electro or electrostatic perforation at fast
running paper webs uses IGBT, MOSFET or HVFET semiconductor power
stages. These circuits working as upward converters with extremely
short time power pulses in ranges from 200 ns up to 15 µs, high
current peaks up to 300 Amps by du/dt of 1500V/µs on a serial
connected inductivity and loading condenser that the secondary ferrite
transformer coils supply the sparking electrodes up to 50 KVss as a
permanent open loop and short circuit.

A safety circuit logic and two hybrid drivers allows a alternately
switching of semiconductor A/B which generating higher operation
frequencies and power levels meanwhile the electrical/thermal
conditions remains on each in the same range as a single switching
unit.

In conclusion the approximately double frequency and power level
operation obtains higher switching efficiencies, more perforation
power or higher corona treatment level, depend of the industry
application.

Advantages
Dual IGBT, HVFETS or MOSFETS semiconductors in high power, high
current, high voltage circuits obtains in electrostatic nano, sub
micro perforation, surface treatment, nano surface modifications,
corona treatment or other switching application frequencies up to 250
KHz, 1400 V/ce, power levels up to 30 KW and more. Higher power
efficiencies and harder switching periods are further advantages.

A controlled pulse timing into a certain time window with a constant
or variable frequency generates hole sizes and hole sequences with
high voltage sparking through the material webs. The repeating
frequencies of the entire circuit can up to the double switching
frequency of each semiconductor.

For example by electrostatic perforation porosity ranges from 80 C.U.
– 2500 C.U., paper web speeds up to 450 m/min and web widths up to
2000 mm are archive able.

Other applications
Corona treatment units, surface treatment, high power switching
devices, power supplies, AC/DC drives, AC/DC or AC/AC converters,
laser diode power supplies, compact switching converter systems, etc.

The new dual semiconductor allows applications to build hybrid drives,
semiconductor high-level stage, upward, downward or other converters
or generators which operating with supporting capacitors, high-voltage
ferrite transformers in an extremely compact and modular way. Several
advantages are the high efficiency of pulse/power transmission and
energy ratios.

Traditional corona or other medium frequency generators up to 30 KHz
operation range are easy to modify to double frequency and power
levels.

Patent grant for process and device DE10328937 of IGBT power switching
unit.

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IPM – International Perforation Management
High-tech engineering - China – Germany - Thailand
http://www.microperforation.com
http://www.microperforation.com.cn
http://www.deguodaguan.com/ipm/
http://www.dk3qv.de

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http://www.microperforation.com/mll-1-laser-perforation.html
http://www.microperforation.com/lpm-1.html
http://www.microperforation.com/opss-1-optical-online-porosity.html
http://www.microperforation.com/igbt-esp-unit.html
http://www.microperforation.com/online-perforation-cigarette.html

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EU technology links
http://irc.cordis.lu/showroom/bbssearch_do.cfm?org=1809&MaxRows=100&sectors=005006003
http://www.innovationrelay.net/showroom/search.cfm
http://www.ircnet.lu/matching/completerec.cfm?BBS_ID=20036&org=391
http://www.tekes.fi/partner/swe/search/nayta_haku.asp?hakuid=28743
http://www.tekes.fi/partner/fin/search/nayta_haku.asp?hakuid=28635
http://www.tekes.fi/partner/fin/search/nayta_haku.asp?hakuid=28657
http://irc.cordis.lu/showroom/bbssearch_do.cfm?org=1809&MaxRows=100&sectors=001001015
http://www.bit.or.at/irca/bbsshow8.php?ref1=06 DE NRXE 0FGK&vQuelle=inna.at
http://www.bit.or.at/irc/bbs-show.php?ref1=06 DE NRXE 0FIX&vQuelle=&cc=&eoi=NO
http://www.bit.or.at/irca/iabfrage.htm

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