[Inductor-Recorded Traction Motor Sound モハラジオ録音] DART SLRV [AEG GTO-VVVF]
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- Опубліковано 5 жов 2024
- #モハラジオ #多変調VVVF #TractionMotorPWMSound #DART
Car Type: Dallas Area Rapid Transit SLRV
Traction: AEG 2-Level GTO-VVVF
PWM Pattern:
51P → 48P → … → 12P → Advanced PWM (Several steps. I used the word "Multi-Pulse Mode(s)" for them in this video.) → 1P
(All Synchronous)
Sound Characteristics:
This vehicle has the famous sound, which is called "multi-modulation-mode" VVVF.
In low speed range, Sinusoidal PWM is applied, and pulse modes are switched in rapid succession while reducing the magnification of carrier frequency to modulating frequency like 51, 48, ... , 12. For the first 51 pulse mode, its carrier frequency rises from 102 Hz since its modulation frequency starts from 2 Hz. On the other hand, for the subsequent pulse modes, the carrier frequency is put in the range of approximately 350 Hz to 400 Hz.
After consecutive sinusoidal PWM modes, advanced PWM modes are used (Let me omit the details because analysis of this part is very difficult). It is characteristic that the modulation rate changes discretely in this part. Also, the pattern in this part seems to change depending on the train's running condition, and the difference appears in "File 1" and "File 3" in the video.
Finally (for medium speed range and above), 1-pulse mode is used. However, it will switch to advanced PWM depending on the train operation. Moreover, I have confirmed that the sound is interrupted when the train is completely coasting.
As of October 2020, similar sounds can be heard in Los Angeles (P2000), Toronto (T1) and Lille (Breda VLC). Also it used to be heard in New York (R110A), Seattle (Breda trolleybuses), and Taipei (C301), but all of them are now retired or refurbished (including traction system replacement).
The AC traction PWM sound shown in this video is recorded by a sensor which is placed on the floor of a train car near its traction motor. This sensor is made by myself just using a 100mH inductor.
Due to the resolution of the spectrogram software, the frequency displayed in this video may include some error. Thank you for your understanding.
This sound is recorded in March 2019.
Sorry, I am NOT taking requests for recordings.
Posted by Ebara Express
Twitter (Available in Japanese; translate please!)
/ vvvf_tokyu2000
Website "VVVF Database" (Available in Japanese; translate please!)
vvvfdatabase.st...
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/ @ebaraexpress7260
![[Inductor-Recorded Traction Motor Sound モハラジオ録音] 700-7000 Series Shinkansen](http://i.ytimg.com/vi/Ldh1x92VjPg/mqdefault.jpg)
As a person who rides the bombardier T1 almost everyday, this is great
R110A?
@@R162A-1-train well the r110A has the same ADTRANZ 1507A motors
@@owoairsoft4224 yes
As someone who grew up in Dallas, I’d like to thank you for doing our system
The T1 trains found on the Toronto subway use the same traction motors, which are a variant of the traction motors found on the R110A experimental test trains that ran on the New York subway.
It’s not necessarily that they sound the same because they use the same traction motors; rather, it’s due to the fact that they use the same VF drive with the same PWM patterns. The motors simply act as speakers.
Great, also heard on the Lille tram in France, the R110A prototype in the NYC Subway and the TTC T1 in Toronto !
damn you know the breda lrv exists.
@@BurnedNoodle Yes I already had a ride in it, and it's the only time I've heard this VVVF in person and not through my PC or my phone
Its also in the Milan metro, but I don't remember the stock names
Also used on the Taipei Metro C301 and NYC Subway's experimental R110
The C301 now uses Bombardier MITRAC following a refurbishment.
R110A (not R110B)
Taipei metro C301 before is westinghouse -GTO-VVVF
As someone who lives in dallas and rides DART a lot i love this propulsion but really both are good propulsion
And the sound of Kawasaki R110A NYC Subway
This isn't just the Kink Sharyo SLRV, but also the Siemens P2000
Bombardier T1s as well
Amazing video! Thanks for sharing! I've been meaning to build a device to record these trains. I've lived in the Dallas area my whole life and enjoy riding these. I hope you enjoyed your stay in Dallas. Were you able to record the newer DART SLRV inverter sound? They make a unique "whistle/howl" I haven't heard elsewhere.
Thank you for watching this video!
I totally enjoyed that DART light rail system, especially for the speed gaps between street running areas and rail-only areas.
Yes, I also recorded that Toyo Denki IGBT
one, so I'll upload it later.
@@yourgeekoftheweek DART has no immediate plans to replace them, but some cars have received the IGBT inverter upgrade as the GTO inverters naturally age out and fail.
変調がやばいｗ
さすがWestinghouse製のGTOインバーターｗ
次はバートですかな? (igbt)
日本では聞けない変調の多さ
The R110A and T1 have the same exact sound as this!
Looks like the TTC T1
Hey! I just came across this video in my recommended after a couple of years, and I’m wanting to create the same sound you did with OTOTETSU, a mobile phone app. Do you have any tips? Following the pulses you suggested made it sound awful, so thank you for the suggestions!
Use 3 level pwm, gear ratio 14:85, check Wikipedia for other settings.
@@Manneslve Do you have any info on the frequencies and speed in kmh for those frequencies that I should use? Using async PWM on high pulse modes like seen here makes it super high pitched.
Same sound as M1 Naples rolling stock (made by Ansaldo), Metro Catania M.88 trains (made by Firema, partly owned by Ansaldo at that time), and not refurbished TAF regional/suburban trains (made by Breda when it was already part of the same parent company of Ansaldo) in Italy. At the moment they're still around, but not for long: as I said TAF are being refurbished, and both metro Catania and Naples are getting new trainsets from 2022 which will eventually replace these older units.
There is a similar sounding one on the stock that is on the M1,M2,M3 of the Milan metro!
@@famigliacontardidangelo8058yes, those trains are called "meneghino", I've used them since I was a kid:) one of my favourite metro sounds
一瞬だけ京浜東北の２０９系とか京阪奈線７０００系（三菱GTO）
Now arriving, West End Station, doors will open to the right
Many transit agencies have used this propulsion.
Beautiful!
特殊❗
Sounds like a R110A
R110A and T1 have similar propulsions
They use the same propulsion.
@@MetrolandClub yes they do make same sounds, I agree with you
Sounds like the prototype R110A
Crepeey sound on computer looks like from A file:
Could you also do the M7 of the LIRR and MNR?
It's an interesting sound‼︎
if i play this threw a moter, will it spin up like this?
Can you do a BR class 466 its a british trAin with a great motor
R110A+R160B
Darn, I may even try this on Dutch trains. Anymore info on the inductor used and possible circuitry behind it before it is fed into a computer or lineair pcm recorder or something? Especially our ICNG (InterCity New Generation) trains have such a weird acceleration sound (it is a normal ramp-up sound, that then transitions to a way higher tone, still ramping up, to then switch back down to a lower frequency (but higher than on initial acceleration) Here's a recording made by someone else: ua-cam.com/video/rQb4aKtm2X4/v-deo.html
Hi, what program do you use to display the waves on this video?
I use “WaveTone” for the spectrogram, and the video editing software “AviUtl” for the waves shown below that.
Unfortunately these are Japanese softwares, so it might be inconvenient for you to use.
Ansaldo Breda? is that you?
No it's Westinghouse
funny no one really knew the Breda VLC had this.
Yeah Ansaldo/Breda liked these inverters in the 90s. I know at least 3 different trains in Italy with this sound, some are still around
Oh, I know this one
I live in Lille, and I see these 24 "mongy's"
Well, the motors are AEG/Westinghouse 1504 A tri-phase asynchronous motors.
@@BurnedNoodle me, I know the "Veicolo Leggero Cittadino"
why tf does this video hae a dc offset at the start
Please do the R142A
It's up already; it was recorded on R143, which has exactly the same.
@@TheSearleFamily123 this was 4 months ago…
R110 Motor
Also R110A and TCC 1
And c301 1991 gto vvvf
Try recording Frankfurt U-Bahn type U4, they have very distinct inverter sounds
twitter.com/leafrea/status/1294494312823009281?s=21
It is published on Twitter by Ed Mund Narumi (@leafrea).
Why are you using a diagram of piano keys instead of a frequency scale lol
変調しすぎ