High-speed rail energy storage capacitor

How to select energy storage media suitable for electrified railway power supply system?

In a word, the principles for selecting energy storage media suitable for electrified railway power supply system are as follows: (1) high energy density and high-power density; (2) High number of cycles and long service life; (3) High safety; (4) Fast response and no memory effect; (5) Light weight and small size.

How traction power fluctuations affect high-speed railway system (HSRs)?

Traction power fluctuations have economic and environmental effects on high-speed railway system (HSRS). The combination of energy storage system (ESS) and HSRS shows a promising potential for utilization of regenerative braking energy and peak shaving and valley filling.

What is high speed railway?

HIGH speed railway has developed rapidly in recent years. Traction power supply system, which is the main source of current train power, is related to the safe operation of railway transportation and power grid. Electrified railway is considered to be one of the highest energy consumption users in the public power grid .

Can co-phase traction power supply system improve energy management of electrified railway?

A co-phase traction power supply system with SC ESS was proposed in , and the conclusions validated that the structure effectively realized the energy management of electrified railway, including four working modes: traction, regenerative braking, peak shaving and valley filling.

How a back-to-back converter works in an electrified railway?

In the electrified railway with different phase power supply system, the AC side of the back-to-back converter can be spanned on the power supply arms to realize energy connection. The power supply arms share a set of energy storage equipment to realize the energy exchange, which has strong expansibility and large capacity of ESS.

How to optimize energy storage for electrified railway ESS?

The coordination control and capacity optimization among energy storage modules in HESS is still the key. The emergence of new energy storage technologies such as power lithium titanate battery and gravity energy storage also provide more options for electrified railway ESS.