[Inductor-Recorded Traction Motor Sound モハラジオ録音] E3 Series Shinkansen (IGBT)

Описание: #モハラジオ #TractionMotorPWMSound #E3Series
00:00 Title & Introduction
00:05 File 1-1: Type 1 (Shinkansen Section) Acceleration
03:47 File 1-2: Type 1 (Shinkansen Section) Braking
07:23 File 1-3: Type 1 (Conventional Line Section) Acceleration
09:45 File 1-4: Type 1 (Conventional Line Section) Braking
11:22 File 2-1: Type 2 (Shinkansen Section) Acceleration
14:51 File 2-2: Type 2 (Shinkansen Section) Braking
18:16 File 2-3: Type 2 (Conventional Line Section) Acceleration
20:06 File 2-4: Type 2 (Conventional Line Section) Braking
21:25 Manufacturer Presumption

Car Type:
JR East E3 Series Shinkansen

VVVF:
Hitachi/Mitsubishi? 3-level IGBT-VVVF

Sound Characteristics:
[Type 1]
Pattern:
Asynchronous (Dipolar Modulation → (Continuous Transition) → Unipolar Modulation) → Multi-Pulse Mode (3-Pulse Mode) → 1P*
*1P does not appear at the maximum speed on conventional line sections.
Asynchronous Mode Carrier Frequency:
430 Hz → (Continuous Transition) → 1000 Hz (Shinkansen Section)
400 Hz → (Continuous Transition) → 800 Hz (Conventional Line Section)
For the dipolar modulation, the most emphasized component is around four times the carrier frequency.

[Type 2]
Pattern:
Asynchronous (Dipolar Modulation → Unipolar Modulation) → Multi-Pulse Modes (9P → 3P) → 1P*
*1P does not appear at the maximum speed on conventional line sections.
Asynchronous Mode Carrier Frequency:
430 Hz → (Continuous Transition) → 1000 Hz (Shinkansen Section)
400 Hz → (Continuous Transition) → 800 Hz (Conventional Line Section)
For the dipolar modulation, the most emphasized component is around four times the carrier frequency.

Others:
The sound sources for the other cars in this video can be found below.
JR East E2-1000 Series (Type1/Type2):
   • [Inductor-Recorded Traction Motor Sound モハ...  
Keikyu 600 Series (1st to 3rd batches):
https://vvvfdb.stars.ne.jp/vvvf_data/...
Yokohama Municipal Subway 10000 series (equipment refurbished cars):
https://vvvfdb.stars.ne.jp/vvvf_data/...
JR East E5 Series (Type1/Type2):
   • [Inductor-Recorded Traction Motor Sound モハ...  

The AC traction PWM sound shown in this video is recorded by a sensor. This sensor is made by myself just using a 100 mH inductor.
Regarding the files used, the extra noise components has been reduced from the ones saved immediately after recording.
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 November 2021.
Sorry, I am NOT taking requests for recordings.

Posted by Ebara Express
X (Available in Japanese; translate please!):
https://x.com/VVVF_tokyu2000
Website "VVVF Database" (Available in Japanese; translate please!):
https://vvvfdb.stars.ne.jp
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