Enjoy the distinctive VVVF sound of JR West's 207 series commuter trains in the station arrival and departure scenes and the in-car running sounds! 1) The 0 series control unit manufactured between 1991 and 1993 uses a very rare system of Mitsubishi GTO chopper and power transistor element (PTr) VVVF inverter, which produces a modulated sound similar to JR East's 209 series along with the distinctive armature chopper sound. PTr-VVVF is also used in JR East's 701 series, and the motor sounds are very similar. 2) The 1000 series control unit manufactured between 1993 and 1997 was changed to Toshiba GTO-VVVF, and the layout of the motor cars was changed. The sound is quite loud with a scale typical of Toshiba GTO. ③・④The control method is the same as that of the 2000 series 223 series manufactured in 2002-03, and two types of Toshiba IGBT-VVVF (③) and Mitsubishi IGBT-VVVF (④) are used. This sound can be heard on other types of trains as well, and has developed into the most popular sound in JR West, and can be heard in a wide range of trains, from commuter trains to express trains. ⑤・⑦2014-present Twenty years have passed since the debut of the 0 series improved trains, and JR West has carried out a renewal called the improvement work, and at the same time, the control device was updated to Mitsubishi IGBT-VVVF. However, there are two types, one where the motor is the same, but the VVVF is upgraded (⑤), and the other where the motor is replaced with a new, fully sealed type and the VVVF is also upgraded (⑦), the former has a lower pitch, and the latter has a higher, raspy sound like that of SiC. ⑥ 2015 - Present 1000 Series Physical Improvement Vehicles The 1000 series has also had its VVVF updated, but the VVVF device remains the same, and the inside has been updated from GTO elements to IGBT elements, which is a strange form. Perhaps because of this, the asynchronous mode has a raspy sound characteristic of IGBT, but halfway through, it changes to a Toshiba GTO-specific scale, which is a very strange control. --------------------------------------------------------------------------------------- Good sound level ① Not updated Mitsubishi PTr: ★★★★★5 ② Not updated Toshiba GTO: ★★★★★5+ ⑤ and ⑦ Updated vehicles Mitsubishi IGBT: ★★☆☆☆2 ⑥ Updated vehicle Weird Toshiba IGBT: ★★★★☆4+ ④ 2000 series Mitsubishi 3LvIGBT: ★★★★☆4 ③ 2000 series Toshiba IGBT: ★★☆☆☆2 *Evaluated based on personal preference. How many stars do you give it? --------------------------------------------------------------------------------------- Chapter 0:00 ②Everyone's favorite 1000 series Toshiba GTO 1:06 ⑥1000 series improved car Weird Toshiba IGBT 2:13 ①0 series Mitsubishi GTO thyristor chopper + PTr-VVVF 3:19 ⑤0 series improved car motor not updated Mitsubishi IGBT 4:13 ⑦0 series improved car fully enclosed motor Mitsubishi IGBT 5:17 ④2000 series Mitsubishi IGBT (tornado inverter) 6:13 ③2000 series Toshiba IGBT 7:19 Raising and lowering pantograph for rigid overhead lines seen at Kyobashi and Amagasaki stations 7:38 ⑥1000 series improved car running sound 11:50 ②Amazing sound of the Toshiba GTO 1000 series car running sound inside the car 16:48 ①500 series car running sound with chopper sound 20:24 ⑦Interior running sounds of 0-series improved cars 22:16 ④Interior running sounds of 2000-series Mitsubishi cars 25:44 ③Interior running sounds of 2000-series Toshiba cars 27:43 ①All 0-series F train 28:38 ①0-series Z train + 1000-series S train ② 29:47 ①+② (0-series + 1000-series H train) + 1000-series S train ② 31:39 ②All 1000-series T train + S train 34:26 ④All 2000-series T+S train (Mitsubishi 3LvIGBT) 35:22 ③All 2000-series T+S train (Toshiba IGBT) 36:47 Unknown? H train with only updated equipment and no physical improvements 37:34 ⑦+②0 series Z train updated car (Mitsubishi IGBT) + 1000 series S train not updated car (Toshiba GTO) 38:39 0 series Z train updated car passing 39:16 ⑥+⑤ All updated cars (0 series + 1000 series H train) + 1000 series S train 40:52 ⑥ All updated cars 1000 series 41:55 Thank you for watching! ------------------------------------------------------------------------------------ [Good Sound♪Sound Train Video Series No. 491] ◎To enjoy the sound, we recommend watching with earphones, headphones or high quality speakers! ⬇ Introduction video about this channel • Good Sound♪TOQBOX9000 channel introduction video ------------------------------------------------------------------------------------