[ABB IGBT-VVVF] Stadler FLIRT 3 (TiLo) [Inductor-recorded]

Here I have the Stadler FLIRT 3, operated by TiLo on the Route from Lugano to Milano, in an inductive recording.
I apologize for not having the waveform shown, since the distortions are making it unreadable.
Softwares used: Sonic Visualizer, Audacity, Adobe Premiere Pro
Filters applied: Low-Pass Filter (5kHz), High-Pass Filter (150Hz)
Recorder (Real sound): Apple iPhone 12 Pro
Recorder (Inductive sound): Zoom H1n
Inductor: Cochlear Nucleus 7 (CP1000) [in Telecoil mode]
Inductance: unknown (presumably more than 100mH)
#モハラジオ #igbt

[@donatograsso5648]

hello ¿the stadler flirt class 745 EMU of the greater anglia are equipped with ABB BORDLINE IGBT-VVVF?

[@firetraxxms4]

I would assume so. Stadler uses (from what I know) ABB all the time for the FLIRTs they produce.

[@Train_Sounds]

Hey! Which electronic parts did you use to record, two 100 mH coils, one for each channel? And what do you mean by H-bridge sound, and what could be done against it? And which recorder did you use? I'd be very happy if you could answer my question 😀 I'm another train sound lover!

[@firetraxxms4]

Hey. It’s actually written in the description about the recording equipment. With the H-Bridge noises I mean the other noise generated by the inverter that messes with the Inductor and as of now, I don’t really see any way to get rid of this noise because the inductance might be over 100mH and it’s really sensitive to any other electric noise. I hope this answers your question (:

[@TheSearleFamily123]

I think the interference is actually caused by the aluminium body, which does make inductor recording hard.

[@firetraxxms4]

Isn’t the body connected to ground? I mean the noise varies, depending on how I position the „inductor“.

[@TheSearleFamily123]

@@firetraxxms4 Well, despite the aluminium body, the inverter is machine room mounted on this train according to the Stadler datasheet. And it's only accessible in the crew cabin.

[@firetraxxms4]

I mean it’s possible that it is coming from the inverter since the cabin was right behind me where I recorded.

[@mateksyマテクスー]

Is there a synchronous mode here?

[@firetraxxms4]

I think at 1:52 is where the synchronous pattern starts.

[@gapthemind--mindthegap8524]

​@@firetraxxms4the sound is also partially gearbox related it would seem