【转载 | 电磁录音频谱 | 庞巴迪 IGBT-VVVF】英国铁路Class 378列车

https://www.youtube.com/watch?v=Iux99HvTwWk

原视频发布于2025年6月27日
原作者：Youtube@ItsYa165 (https://www.youtube.com/@ItsYa165)
** 经原作者授权许可后发布 **
本视频仅在B站发布，严禁转载到国内其他平台！

原视频标题：Bombardier IGBT VVVF | Class 378 Traction Sound | PWM Inverter - Class 378 Inductor Recording
--- 以下为原视频简介 ---
Class 357/375/377/378/379/387 traction inverters - the Class 378 running on 25kVAC.

Listen closely and see the three-level PWM patterns from the Mitrac 1000 (TC1XXX used for DR1000 ACIMs) Train Control & Management System (TCMS used as a TCU) which run the Class 378 traction motors.

1000Hz, 15P, 6P, 5P, 3P, 1P. Electrostars use voltage vector control with FOC (e.g. SVM).

Noise reduction post-processing:
48000Hz sample of background noise
36dB reduction
No smoothing

Filter:
50Hz*n band
102dB reduction

Equipment used:
2x 1000mH telephone pickup coil
Sony ICD-PX470

Class 357 Traction Motor Sound
Class 375 Traction Motor Sound
Class 377 Traction Motor Sound
Class 378 Traction Motor Sound
Class 379 Traction Motor Sound
Class 387 Traction Motor Sound

#induction #inductorwindingmachine #motor #vvvfサウンド #vvvfインバータ #vvvf #train