[Inductor-Recorded Traction Motor Sound モハラジオ録音] NYC Subway R160B [Siemens IGBT-VVVF]
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- čas přidán 6. 11. 2020
- #モハラジオ #TractionMotorPWMSound #NYCSubway
Car Type: New York City Subway R160B
Traction: Siemens SITRAC 2-Level IGBT-VVVF
PWM Pattern:
Asynchronous (400 Hz) → Advanced PWM (Several steps. I used the word "Multi-Pulse Mode(s)" for them in this video.)
Sound Characteristics:
The carrier frequency during the asynchronous modulation, which is used in the low speed range is constant at 400Hz. Siemens seems to use this 400 Hz carrier frequency for so many trains (Munich Tram GT6N, Daegu Subway 1000 Series, Singapore MRT C651, the latter half of the asynchronous modulation of the Taipei Metro C321 and the "Singing Trains" in Japan and Brazil, etc.).
After that, during the synchronous modulation, advanced PWM modes are used in several steps. In particular, the pulse mode just after the asynchronous modulation has a high-pitched sound and is very noticeable.
In the pulse mode used above a certain level of speed, the sound level decreases at 0:36 and 0:38, and then increases momentarily. At 0:58, the volume is also low, but this is probably due to the sensor being misaligned during recording. I recorded these sounds while taking express trains, and this pulse mode was used at the highest speed in these recorded sections.In the section where the speed is higher, it may switch to the 1-pulse mode, so I would like to revisit and record.
* 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.starfree.jp
Please click here to subscribe!
/ @ebaraexpress7260
![[Inductor-Recorded Traction Motor Sound モハラジオ録音] MUNI LRV3 [GE GTO-VVVF]](http://i.ytimg.com/vi/J8DeBHeVk3w/mqdefault.jpg)
![[Inductor-Recorded Traction Motor Sound モハラジオ録音] MUNI LRV3 [GE GTO-VVVF]](/img/tr.png)
The propulsion itself sounds like it could be used for an EV transit bus!
Sounds super cool! When my inductors come in the mail, I’m going to record the R142A/143s, and the Metro North M7/8s
so like, where the videos at?
@@TheBronxFanner they were crap lmao
@@turbochargedtransit7241 lmao rip
Damnnnn, I need to get some inductors. I’ve always wanted to hear M7/8/9s through an inductor.
@@LIRRFAN426 Same!
The pulse mode of the R160 Siemens are 21-15-9-5-Wide 3-(mostly sometimes 1)
This is cool! It’s interesting to me how the actual propulsion sound from the inductor sounds a little different than what we would normally hear with our own ears in the system!! Very interesting!!
The sound of the train 🚆 is pretty
The Warsaw Metro Siemens Inspiro uses a slightly modified version of this, but using 550 Hz carrier based pulsing instead of 400 Hz.
400hz sounds like alstom.
Edit: I just figured out that in siemens, 400hz sounds alike because in the first part of acceleration of alstom, it reaches 380hz.
Actually the synchronous pattern is 15 pulses (CHM)→7 pulses (CHM)→5 pulses (CHM, 2 steps)→3 pulses→wide 3 pulses→1 pulse _(not heard here)._ The braking replaces 3 pulses with wide 5 pulses (CHM). CHM stands for Current Harmonic Minimum.
what exactly is a harmonic minimum?
@@PmtaROBLOX The “Current” in Current Harmonic Minimum is supposed to mean electric current (i.e. the amount of charge flowing), not current as in “right now”. Sorry for misleading.
I understand noise comes from the motor windings as they're being switched which is caused by the controller because the motors need artificial 3-phase; However, I don't understand why the frequency / pitch is sweeping / changes with speed, and especially why there are steps where it jumps as the train changes speed
All the changes are just down to efficiency: at certain speeds, different 'modes' (frequencies, pulse-count, voltage, whatsoever) the motor behaves differently as an electronic load. By changing all those parameters as the speed increases, the traction-energy is used most efficiently (EDIT: changed 'officially' for efficiently, I guess it was very late when I posted this comment...)
I remember used to hearing the 400 Hz sound pwm. I think now there is a different frequency.
If you're at Hong Kong, would you please record some vvvfs from mtr?
Nice sounds! It would be cool to get a recording of the PATH PA-5 motors as they sound similar to the R160B, although doing so is going to be a pain in the ass as photography, videotaping and audio recordings on PATH are prohibited for bulls*** reasons.
Thanks!
I already recorded PA-5, and I'm planning to post it someday. Please wait for that!
@@ebaraexpress7260why dont you post it?
and for the r142 Siemens as well
Surprised to see this as IGBT, as the Keikyu N2100 has a GTO also from Siemens and has the exact same scripted pulses, therefore giving the same traction sounds. GTO and IGBT are different, but how do these two become so related?
I still think spur-cut bull and pinion gears sound the best.:)
It sounds like the Singapore c651, just the c651 sounds quieter than this
so the motors are both synchronous and asynchronous?
Basically path train
この動画では最高で約70km/h走行していると思いますね。
When I step on a pile of legos barefoot:
Me whenever I step on a lego: 0:12-0:37
Hello there, where can I find and operate these tools?
You have to make the sensor on your own. However, once you get at least an IC recorder, an inductor, and a TRRS cable, you can catch these sounds by setting the inductor on the vehicle floor above its motor.
R160B
THIS IS TIMES SQUARE 42ND STREET
If you ever come to Australia, would you mind doing an induction recording on our trains?
Yes, I want to record A set's Hitachi IGBT!
@@ebaraexpress7260 can you please record the m set?
@@ebaraexpress7260 Speaking of which, the Hitachi IGBT-VVVF on the Waratahs is nearly identical to that of the E233-3000 series and the Narita Express E259 series!
@@ebaraexpress7260 I just need to fix the headphone jack wiring and soldering, and wait for vaccination rates to rise and for cases to lower, then I'll get on with it!
Here is the answer to your question: czcams.com/video/eBluqH_ySrI/video.html
How do you record these and what do you use to record them?
I put an inductor (100 mH) to a TRRS cable adapter, then I inserted a TRRS cable connected to an IC recorder.
You can record this sound by putting this on a train car's floor just above its traction motor.
Thanks
@@ebaraexpress7260 the tweet is not available anymore
@@HuSerrVVVF Sorry, so I deleted that comment for that unavailable tweet's URL.
@@ebaraexpress7260 Where can I find the inductors? I can't find any unshielded 100 mH inductors.
THIS IS CONEY ISLAND
I also have two requests if you can, the LIRR Bombardier M7 vvvF Motors and the PATH Kawasaki PA5 vvvF Motors
Well you can't. He is NOT taking requests for recordings.
Would you be able to do the SF BART?
czcams.com/video/L5aI8RqsBpw/video.html
@@TheSearleFamily123 thank you!
@@SebastianSegura1138 Side note: Unfortunately this was only recorded on the A/B series.
@@TheSearleFamily123 that’s all good! Any Bart content is great! Not enough BART content unfortunately on yt
Imagine r110A
R160 Siemens PWM:
400 Hz - 21 Pulse Modes - 15 Pulse Modes - 9 Pulse Modes - 5 Pulse Modes - Wide 3 Pulse Modes - 1 Pulse Mode
Do r179
Did u do that already?
Wall-e be like:
💀
Do r179
Here's the uploaded video for R179's PWM by my follower. Check this one!
czcams.com/video/YdLZXc3GEX4/video.html
Tesla 10000 hz