Is there any way i can find an MITRAC traction motor from NYC MTA trains? Specifically with the R142A/R143/R188 I love their traction motor propulsion sound, as far as I know it’s made from bombardier.
You can in a train scrapyard or at the train companys warehouse but youre gonna need yourself a big ass crane cause that motor weights more than your car
Ok I just released a video that shows all 16 different V/F settings which on this inverter changes how the motor sounds. You can watch it here if you are interested. ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-o1VeemnoV-Q.html
I have confirmed that the 8000-series trains on the DC metro will be using Hitachi IGBT-VVVF inverters, it'll be interesting to hear what they sound like as they're being tested in 2026
what actually emits the sound, is it from the inverter itself, or the electric motor resonating? as in, which thing here is shaking the air that we hear?
I will need to make a video on that but I can give you the short version. The sound comes from how the controller generates ac power. It generates a series of pwm pulses which approximates a sine wave. However you also hear those pwm pulses. The reason you hear the "gear changing" sound is due to older controllers like this one being programmed that way.
@@Tomaswaza152 This model is the Toshiba VF Pack P but it is a special 110v input model that I have not been able to find again. But you can find something similar by searching Toshiba transistor inverter ESP130. It may not sound like the one in the video though. Make sure to check the input and output voltage. Also keep in mind some models are single phase input and others are three phase input.
