|
|
|
|
|
Inverter unit for DC substations |
|
evaluated |
|
|
|
By installing thyristor inverters in substations of DC systems, a feeding back of recovered braking energy into the public mains becomes a possibility. This can considerably increase recuperation rates in suburban or regional DC systems.
|
|
Technology field: Regenerative braking and energy management
|
|
|
|
|
|
|
|
|
General information
|
|
|
General criteria
|
|
|
Environmental criteria
|
|
|
|
|
|
|
|
|
|
|
Impacts on energy efficiency:
|
|
|
|
|
Energy efficiency potential for single vehicle: 2 - 5% |
|
|
|
|
Energy efficiency potential throughout fleet: < 1% |
|
|
|
|
|
KVB made a contract with its energy supplier to refund the energy fed back into the supply grid on the basis of a flat rate. This flat rate covers an amount of energy corresponding to approx. 5% of the gross energy intake at the substation. Given that the system can operate economically only at some substations, the system-wide saving potential (in one particular network) will be somewhat lower. |
|
|
|
|
|
|
|
|
Other environmental impacts: neutral |
|
|
|
|
|
(no details available) |
|
|
Economic criteria
|
|
|
Application outside railway sector (this technology is railway specific)
|
|
|
Overall rating
|
date created: 2002-10-09 |
|
|
|
© UIC - International Union of Railways 2003 |
|
|
|