N700S-9000 series are the 5th generation of Tokaido and Sanyo Shinkansen trainset for evaluating new technology and features. They are formed 14 motored intermediate cars and 2 trailer end cars. They can also produce 12-car and 8-car trainsets in the future in addition to the Tokaido Shinkansen 16-car trainsets.
The double-skin aluminum construction incorporated into the vehicle design
for light weight achieves both silent cabin room and lower cost. The long
nose section design is closely based on N700 series, differing in having
edges on the both right and left sides of the nose in order to reduce tunnel
micro atmospheric pressure wave, wind noise, running resistance, and vibration
of the rear car by rectifying traveling air. They employ different shape
LED headlamps and a slightly different blue stripe design on the sides.
"N700 Supreme" logos are applied on each odd-numbered car.
Bogies future bolster-less air suspension and coil spring with cylindrical
laminated rubber. Although the construction of the existing bogie frame
was two exterior parts stuck together horizontally with additional strengthening
inside, bogies of N700S series feature welded U-shaped member and under
plate unified with axle spring base, realizing the light weight. The reduction
of the welding points improves their productivity. Some of gear units incorporate
double helical gears to reduce thrust load against bearing and to run more
smoothly and quietly. Although N700 series adopted continuous variable
semi-active dumpers, 1st class cars of N700S series adopted active suspension
for further improved ride quality. N700S series trains have a tilting of
up to one degree allows the trains to maintain 270 km/h even on 2,500 m
radius curves.
VAFD inverter traction system employs Silicon carbide (SiC) MOSFET, providing
advantages for fast, high-temperature and/or high-voltage devices to supply
high frequency and high current. Their traction system is made smaller
and lighter by introducing traveling air cooling technology. Light and
small traction motors are adopted by employing six-stator-pole type, realizing
light weight under keeping high power output. Transformer employs thin
windings and small iron core to reduce weight and size. These new technologies
realize optimized underfloor equipment layout to allow the same standard
design to be used to produce 12-car and 8-car trainsets in the future.
The optimization is intended to make the train more flexible. This optimization
further allows Toshiba SCiB LTO batteries to be installed so that the train
can operate at low speed in the event of a disruption to overhead power.
Single-arm current pickup with short lower arm employ flexible slide plate
to improve trackability and life. The insulators of the current pickup
are reduced to two, realizing light-weight.
Interior layout and accommodation are very similar to that of N700 series
in the standard layout of 2+2 seating in first class, and 2+3 in standard
class. Seating pitch is 1040mm in standard class and 1160mm in first class.
Each seat has AC power outlets. The outlets of air conditioners are unified
with the side wall panel to enlarge the size of outlets, equalizing the
temperature in the passenger saloons. The passenger saloons adopt LED indirect
lighting. When the train is approaching the station, LED light up the luggage
rack to prevent from lost articles. Passenger information device is changed
into large LCD passenger information screens.
N700S-9000 series underwent extensive test running from 20 March, 2018,
and are now undergoing. |
|
| Technical Data |
| Items |
Data |
| Built |
2018 |
| Construction |
Aluminum |
| Formation |
14M-2T |
| Supply
voltage |
25,000VAC,
60Hz |
| Service
speed, etc. |
Acceleration: 2.6km/h/s Service speed: 300km/h |
| Length |
27,350mm
(End cars) 25,000mm (Intermediate cars) |
| Width |
3,360mm |
| Height |
3,600mm |
| Bogie |
TDT207X (motored) TTR7005X (trailer) |
| Collector |
Single arm (2 per 16-car train) |
| Traction
motor |
|
| Gear
ratio |
|
| Controller |
|
| Air
conditioner |
|
| Designed
by |
JR
Central |
|
|
