SSR for motor control

[Mechd07]

Hi. I would like to know what the outcome would be if I supply this SSR (

http://www.power-io.com/products/hdd.htm

) with voltages within it's range but more than twice (40 kHz) the cycles it's tested at.

 

[NEWFIEBOY]

Hello Mechd07

Why not contact the manufacturer and ask them what would happen if you were to supply an overfrequency to their SSR.

 

[Mechd07]

LOL. It's funny you said that. I thought the same thing right after I posted. Sorry, it's been a long day. But now that I already have posted and the phones there more than likely will not be answered at his hour replies are stil welcome.

 

[waross]

You would be exceeding the turn-on and turn-off times.
You may induce a state where the device is modulating instead of switching. The losses incured by the modulating service will probably induce rapid failure from overheating.
yours

 

[jraef]

Instead of going to a pre-packaged SSR, why not go directly to the IGBT mfrs and ask for a power module suitable for a 40kHz switching frequency? I assume you are trying to build a PWM controller no?

Eng-Tips: Help for your job, not for your homework Read faq731-376

 

[waross]

I guess "exceeding" is the wrong word in my previous post. I meant that you would be turning it off before it was fully on, and vice versa.
respectfully

 

[itsmoked]

I concur with waross and jraef! Won't work! Use a IGBT. module.

Something like:

http://dkc3.digikey.com/PDF/T062/0848.pdf

Keith Cress
Flamin Systems, Inc.-

http://www.flaminsystems.com