Compatibility of Infineon FS450R12KE3 vs FS450R17KE3 With ABB AGDR-71C Driver

We are using the IGBT model Infineon FS450R17KE3 with drive ABB model AGDR-71C together. We would like to know that if we replace the IGBT FS450R17KE3 by the new IGBT model FS450R12KE3, is it possible or not?

Hi Wayne-I think the biggest difference is that the FS450R12KE3 is rated 1200 volts, where the original FS450R17KE3 is rated 1700 volts, so you'd lose a little safety margin. Can you get an oscilloscope connected between the emitter and collector on the existing one so you can see how high the spikes get under worst-case conditions?Please be really, really careful- those motor drives can bite!-Rick 

Just remember that a probe has a voltage rating,  you may need a x100 probe, and the scope and circuit grounds are not likely to be at the same potential due to stray resistance and inductance,cheers,Richard

Hello Rick,Thanks for your answer. Let me explain more clearly about our situation as below:- Our customer is using IGBT Infineon +board drive ABB: FS450R12KE3/AGDR71C in their ABB drive system.- We are having FS450R17KE3/AGDR71C in our stock. - If we replace the IGBT FS450R17KE3 by FS450R12KE3 to have one set FS450R12KE3/AGDR71C, is it possible or not? If it is possible, I think the it will not affect to the drive system, is it right?Thanks so much!Wayne,

so called Discretes IGBTs, which are available as Single IGBTs and co-packed with freewheeling Diode. To ease setting up a laboratory experiment or a first prototype, Infineon helps by providing evaluation boards for most of the products to accelerate development cycles. Thus, conclusive results can be generated within the shortest possible time.

Hi Wayne-I can't tell you for certain that the lower voltage IGBT's will work.  If the peak voltage across the existing IGBT modules is less than 1200 volts it should be OK, but ABB put those higher voltage modules in there for a reason. Richard had a good point about the high voltage probe needed to make the oscilloscope measurements.  It would also be good if the probe was isolated.If it's not practical to use an oscilloscope to make the measurements you **may** be able to use a multimeter that has a peak-hold function.  Most multimeters are limited to a maximum voltage of 1KV, so make sure your multimeter can stand the higher voltage.    Regardless of whether you use an oscilloscope or a multimeter, one you're set up to make the measurements it will be necessary to put the VFD through all possible situations to find out which one creates the highest peak voltage.-Rick  

Wayne-
Where are you located?  There should be a local Infineon support person
available who could advise you further on this issue.  Try going to www.infineon.com and click
on contact.
There you will find a number of options for getting local support.

A single switch system consisting of one IGBT and one ideal free-wheeling diode is implemented to simulate the power loss and junction temperature of the IGBT device at the given static DC voltage and current conditions. This simulation aims to evaluate an IGBT device.
Discrete IGBT Motor Drive Simulator    A three-phase motor drive inverter system is implemented to simulate the power loss and junction temperature of each device at the given static load conditions.
IPM Motor Drive Simulator    Intelligent Power Modules simulation tool allows you to compare IPM products in motor drive application. A three-phase motor drive inverter system is implemented to simulate the power loss and junction temperature of each device inside IPM at the given static load conditions.
IPOSIM (High Power Modules & Disk Devices)    The Infineon Power Simulation program for loss and thermal calculation of Infineon Power Modules and Disk Devices.
IPM CIPOS™ Mini Simulation Tool    CIPOSIM (CIPOSTM Simulator) performs an estimation of the losses and temperatures for IGBTs and diodes in a CIPOS-Mini under the specified operating conditions. With this tool a quick selection of a suitable CIPOS-Mini module for an application is possible taking into account its average losses and thermal ratings. Be sure to always have the latest CIPOSIM version on-hand.