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Exc
excellent book, I think the class E commutation shown on page 160 is the best ! Simple transistor and isolated voltage or pulse transformer to switch off, thanks a lot !
Now I need to see how the timing performance is. Has anyone switched off or commutated a thyristor?
I think SCR/Thyristor can be AC/DC application. Voltage source does not matter, just similar to the diode. See https://www.electronicshub.org/scr-applications/
go to middle section of the document.
The controlled turn off is called GTO (Gate Turn OFF) this is a special class of thyristors...
Apologizes with "no one", I meant the semiconductor manufacturers and app notes from them. Not the forum members sorry for the confusion.
Requirements
Application Voltage - 1000VDC
Normal Application continuous current - 400A (for 20ms only)
Short Circuit/ Surge/ Inrush current capacity - 4kA...
Thanks. Actually I wanted to avoid the transformer, modern gate driver have capacitive or optical or some form of isolation and plenty are available almost 10A peak. I think current is not problem, upto 20V I think they are available. I am surprised no one is giving any information. It seems SCR...
Do you happen to have any electronic copies of those application notes? can you pls point to them? I have spent quite a bit of time and could not find any. Most of the documents I found show some transistorized circuits. I want to use simple IC, just like gate driver IC for IGBT and Mosfet. Do...
Hi,
I am trying to design a SCR/ thyristor gate drive circuit. Any recommendations of Gate driver ICs and circuits will help.
thyristor part number is MCC312-16io1.
Thanks
I think this is a good article that describes the issue. https://dvdtfilter.com/dv-dt-from-motor-drives/
The question has anyone used this type of filer for synchronous PMSM? for Asynchronous induction motor it should be ok.
Hi,
Has anyone used/designed an output filter for inverter for PMSM motor? I know the dv/dt filter exists for Induction or asynchronous motors when driven over long cable.
In my simulation the LC filter designed for dv/dt is I think causing the PMSM to lose its synchronization and the...
Hi,
I am looking for reverse blocking IGBT to replace a diode and switch (On/OFF isolator) in my application. Voltage is 800VDC and current 15A DC. I am seeing no semiconductor manufacturer really making any reverse blocking IGBT. Any other alternatives? any idea what happened? any...
DAB ( Dual Active Bridge) normally used for bi-directional DC-DC power transfer. While operating in one direction it seems very close to PSFB.
Most of the circuits are not showing the LC output filter in DAB, I am wondering how close the DAB is to the PSFB in unidirectional sense? and where the...
Hi,
I am looking for thyristor gate drive IC. Can the thyristor be driven by MOSFET / IGBT Gate driver IC? Any recommendations? It says DC gate current required for trigger in thyristor datasheet and it is close to 300mA. I assume this will be like a peak current in mosfet driver for short...
I think the circuit is correct, it does not need low frequency branch. It operates as described in post #3 ( three phase carrier locked to input voltage phase creating 3 phase PWM) unlike the totem pole which you have mentioned in the link which kind of operates with one phase and neutral and...
Following Circuit is what I am looking for to design, especially the inductors:
Now as per mtwieg suggestion I have decided to use the single stage PFC inductor equations (which are abundantly available on internet / text book references)
Now normally three phase PFC is used for high power...
Hi,
I am looking for an Appnote or reference for three phase 2 level boost PFC inductor design. The Basic 6 switch boost PFC. Surprisingly I am not able to find any reference on the internet. Any pointers will be appreciated.
Thanks
Hi FvM,
Thanks.
The reason I am asking is that for designing a custom CMC choke I need to consider pretty high saturation differential current for the CMC choke as compared to the CM mode current. It means my inductance should not drop for the DM mode current, however the DM mode will not see...
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