News Release

ニュースリリース

Toyo Denki Wins Order for 2,000 kW Regenerative Power Storage System forTokyo Tama Intercity MonorailTokyo, December 18, 2015 — Toyo Denki Seizo K.K. (hereinafter Toyo Denki) announced todaythat it has won an order for a DC/DC converter E3 Solution System regenerative power storage
system with an output of 2,000 kW from Tokyo Tama Intercity Monorail Co., Ltd. (President:Hitoshi Kawashima, Headquarters: Tachikawa, Tokyo Metropolis). The system will be installed at
Tokyo Tama Intercity Monorail’s Hino Transformer Station, and operations are scheduled tocommence in June 2016.
Toyo Denki’s DC/DC converter has an output of 1,000 kW per set. By providing two sets for theTokyo Tama Intercity Monorail, 2,000 kW high-capacity operations will be realized. In addition, thepower unit installed in the DC/DC converter is highly reliable, exceptionally practical, and has beenapplied to many Toyo Denki power conversion units for trains. Further, the DC/DC converter has atouch panel for easier configuration, making for improved operability on site. Even away from thesite, a contact input signal makes it possible to perform stop and go commands.
Toyo Denki’s DC/DC converter will be used along with storage batteries manufactured by GSYuasa Corporation (President: Osamu Murao, Headquarters: Minami-ku, Kyoto). Two types ofstorage batteries are used: the LIM25H-8 regenerative absorption lithium-ion battery with highinput/output, and the LIM50EN-12 emergency running lithium-ion battery with large capacity. The
regenerative absorption lithium-ion battery stores regenerated power from train braking, and thenreleases it at the time of train acceleration, recycling power to achieve energy saving. Theemergency running lithium-ion battery provides energy in emergencies, such as when trains arestopped between stations due to power failures at transformer stations, so that trains can safely
evacuate to the nearest stations, contributing to safe rail transportation.
GS Yuasa’s lithium-ion batteries can support large capacity and high input or output applications, aswell as many others. The batteries have been widely adopted for regenerative power storage
systems, large-scale power storage system, and industrial uses such as hybrid cranes and automatic
guided vehicles (AGV), as well as in various fields including special applications such as rockets
and artificial satellites. Toyo Denki and GS Yuasa Group will continue to contribute to disastercountermeasures and an energy-saving society through the spread of systems using storage
batteries.

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ニュースリリース
System Overview
1. System Capacity
Item
Bidirectional DC/DC
converter
Regenerative absorption
lithium-ion battery
Emergency runninglithium-ion battery

Rated Capacity
2000 kWRemarks
1000 kW converter × 2 units

74.88 kWh

LIM25H-8: 26 units connected in series/
4 units connected in parallel
LIM50EN-12: 16 units connected in series/
6 units connected in parallel

202.46 kWh

2. System Structure Diagram
Charging
Charging

To thetrain line
Discharging

Highspeedcircuitbreaker

Bidirectional
DC/DCconverter(2000 kW)

Storagebatteryswitch

Discharging

Emergency
running
power supply

Regenerative
absorption
lithium-ion battery(LIM25H-8)
High input/output
type

Charging

Emergency
runninglithium-ion battery(LIM50EBN-12)
Large capacity typeContact
PR, IR, and CSR Department, Management Planning Division,
Toyo Denki Seizo K.K.
Phone: +81-3-5202-8122
Email: contact@toyodenki.co.jp

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