Modulation sound of IGBT variable frequency VFD motor drive on a train

The descending and ascending pitch squelching sound comes from the VFD drive and the motors on the red/cream "Express train" arriving to/leaving from #2 platform.




The sound from VFD drive is audible on many Tokyo subway trains but some are louder than others. This one was LOUD. I mean really loud. The nasty(but cool at the same time, heh) VFD screech echoed throughout the entire station.




Technical stuff: The lines at this station are 1.5kV DC. As far as I know, that train runs AC 3 phase squirrel cage motors through a VFD drive.

I'm aware the video sucks. This is a just a section cut from a video of a walk through the station.

Category:

Science & Technology

Tags:

• variable
• frequency
• drive
• motor
• trains
• subway
• locomotive
• engineering
• elevator
• machine
• railway
• VVVF
• Tokyo
• Metro
• Japan
• minato-ku
• VFD
• traction
• inverter
• Oedo
• Asakusa

[kanazo]

i love the starting sound of keikyu 1000...the singing train

[UrbexNW]

That one is all over the net.. I like the sound of this one better..

[UrbexNW]

Deceleration at 0:6 Acceleration at 0:36

[StartYourEnginejp]

siemens!

[jzingarello]

You gotta listen to the R160A and R160B trains of NYC subways. They sound really cool.

[kanazo]

hope to ride more variety of trains next time to tokyo...