ICE 3 Neo acceleration sound

[@thakuromkarsingh2096]

Sound like someone playing music in the beginning

[@BassGuitarSlide]

Schöner Sound - melodisch und kraftvoll zugleich!

[@hashemkader2845]

Hör dir mal den Sound vom Velaro RUS an, da kann nichts mithalten!

[@ELiJah_PRaYed]

Same vf drive as the class 374 on Eurostar

[@bolek_i_lyolek]

А мне больше нравится, когда звук нарастающий по мере набора скорости поездом. От этого есть практическая польза, например слепой даже человек сможет понять, что поезд разгоняется и у отходит от перрона!..

[@aguy2763]

normal ice 3 sounds better

[@Myron0117]

I think we can agree that the OG and Velaro D share the same place though, right?

[@aguy2763]

@@Myron0117 yeah

[@aguy2763]

@@Myron0117and the ice3 neo sounds like someone is playing music on a violin

[@kissdani1911]

I love both❤

[@themodsterrbsaltinemech1306]

It’s sounds like eursotar

[@MulleMap]

It is because it is the same train - a very great train

[@GG-zk3de]

Like the E320 train it belongs to the Siemens VELARO family.

[@Yorkshire-Pudding695]

Class 374s brother???

[@Myron0117]

yeah

[@swissbrony23ch72]

Yup. It's the same product from Siemens.

[@TheosTrainsWalesOfficial]

@@swissbrony23ch72 You'd be right there. They're from the same family as the 374's, the Velaro units.

[@Gajue_]

@@TheosTrainsWalesOfficialno guys, they‘re not the same product. They are pretty similar, Jew but still there are a few things wich are different; no wonder since the production of the velar and Velcro neo are ~10 years apart of each other

[@jetmirjollaj7186]

Myudjgjfj😊😅urjt🎉❤0jrbbgoxbeg

[@Dog_favorite]

Thats ice 4

[@N0tSh4d0w_notreal]

No?

[@Myron0117]

@@Dog_favorite it's not an ICE 4

[@FryChicken]

What causes that sound?

[@Myron0117]

simple answer: traction motors
complicated answer: (you can seach up videos explaining it, I don't have any idea 😦)

[@FryChicken]

@@Myron0117 My guess is the transformer stepping up the voltage?

[@HiAnonym]

I'll try to explain it: the traction motors of the train are three-phase motors whose speed it mandated by the frequency of the ac-three-phase voltage. The voltage with the corresponding frequency is generated by frequency converters (403 and 406 use GTO-thyristor based / 407 and 408 IGBT based). These frequency converters and the windings in the traction motors produce a sensible humming noise because of physical vibrations produced by the alternating voltage. When accelerating, the frequency converters first feed the motors with a voltage that has "gaps" in the electrical waves (X% duty cycle) to limit the current flowing. As the train picks up speed the frequency also rises and on some point the frequency converters suddenly increase the duty cycle which sounds like the train is "shifting gears". When you take a close listen, you can hear that twice in this video. After the duty cycle is increased, much more current can flow and the acceleration can be higher.
I hope I have explained it somewhat understandably, I'm not a native English speaker

[@mittenpulstaktung]

@@HiAnonym The "shifting gears" effect is caused by synchronous pulse width modulation with a fixed pulse count per half wave. It sounds like shifting gears because it's removing pulses each switch in order to reach 1P or GFT/FFC (Grundfrequenztaktung/fundamental frequency clocking), the applied pulse pattern is CHM (Current Harmonic Minimum) 9, CHM 7, CHM 5, CHM 3, CHM Wide 3, GFT/FFC. CHM pulse modes may have several steps. The frequency drops each time because it's trying to reach the fundamental frequency.

[@FryChicken]

@@HiAnonym How does a motor dependent on a specific AC frequency work when not "in sync" with the AC?

[@Flori-an]

Keine Tonleiter mehr :/

[@Myron0117]

die findest du immer noch beim ICE 2 wenn ich mich nicht irre

[@Flori-an]

@@Myron0117ICE3

[@Myron0117]

@@Flori-an was ICE 3

[@Flori-an]

@@Myron0117Der normale ICE3 hat eine Tonleiter

[@Myron0117]

@@Flori-an stimmt nicht