|
What if there is a power failure? |
|
|
|
|
Written by Administrator
|
|
Friday, 09 February 2007 |
|
The vehicles receive their power from DC power rails located inside the guideway. There will always be an alternative power source. One way is to power the system from two different utilities, so that if one fails the other is immediately available to take over. A second way is to power the system from gas turbine-generator sets and to use utility power as emergency backup. A third way, appropriate for maximum energy and peak-power conservation, is to power the vehicles from wayside batteries, which can be charged at night when the power rate is low. During a municipal power failure, vehicles would still receive battery power, so they would simply slow down to conserve energy, finish their trips, and strand no passengers. A fourth way is to use large flywheels as back-up power sources.
|
