In 2006, the first Lithium-ion battery in Japan was installed in traction power supply system by the West Japan Railway Company and now more than 20 energy storage systems have already been installed in traction power supply system in Japan. In this article, the recent Japanese trends of regenerative energy utilization are summarized not only in DC railway but also in AC railway. We, East Japan Railway Company, have installed three energy storage systems for DC railway and one railway static power conditioner (RPC), not energy storage system, for AC railway for regenerative energy utilization. The effects of these systems are also shown quantitatively in this paper.

中文翻译：

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日本牵引电源系统中再生能源利用的最新趋势

2006年，西日本铁路公司在牵引电源系统中安装了日本首个锂离子电池，目前在日本的牵引电源系统中已安装了20多个储能系统。在本文中，不仅总结了日本近来的可再生能源利用趋势，而且还总结了直流铁路和交流铁路。东日本铁路公司已经为直流铁路安装了三个储能系统，为交流铁路安装了一个铁路静态功率调节器（RPC），而非储能系统，用于可再生能源的利用。这些系统的效果也在本文中定量显示。