Skip to content

Melissa Shurland

← Customer Feedback for Department of Transportation

My feedback

2 results found

  1. Is there a real requirement for both bidirectional regen and dissipative load based solutions?

    1 vote

    We're glad you're here

    Please sign in to leave feedback
    Signed in as (Sign out)
    Close
    Close

    We’ll send you updates on this idea

    1 comment  ·  U.S. DOT FY 2026 Phase I Pre-Solicitation Q&A » 26-FR1: Mobile High-Power Emergency BESS De-energizer System for Rail Vehicle Propulsion  ·  Admin →
    An error occurred while saving the comment
    Melissa Shurland commented  · 

    The is no need for bidirectional regen and dissipative load based solutions. This system is meant for emergency use. Currently on diesel locomotive engines resistant grids are used to dissipate braking energy exhausted as heat. therefore, resistive technology has some foundation in rail.

    Battery pack diagnostics would be a secondary objective, such capability may be desired for when the system is deployed by the railroads in maintenance shops.

  2. dedicated rail propulsion battery architectures? What is the anticipated energy capacity range of the rail battery systems involved (kWh or

    1 vote

    We're glad you're here

    Please sign in to leave feedback
    Signed in as (Sign out)
    Close
    Close

    We’ll send you updates on this idea

    1 comment  ·  U.S. DOT FY 2026 Phase I Pre-Solicitation Q&A » 26-FR1: Mobile High-Power Emergency BESS De-energizer System for Rail Vehicle Propulsion  ·  Admin →
    An error occurred while saving the comment
    Melissa Shurland commented  · 

    Question 1 (Q1) - The BESS propulsion system provides tractive energy for locomotive or multiple unit trainsets. BESS propulsion systems replaces traditional diesel engines.
    Q2 - These are dedicated rail propulsion battery systems
    Q3 - BESS for rail propulsion range from 400 kWh to 2.5 MW.
    Q4 - The intended operational goal after de-energization depends on the health and state of the BESS. The de-energizer is intended to be used at accident sites or in maintenance shops. In scenarios where it is used in maintenance shops, it is expected that the batteries be fully functional after de-energization.
    Q5 - It is not expected that the recovered energy be stored or reused. However, for cases where the system is used in maintenance shop the recovered energy may be useful to the railroad; reusing the capture energy could be a secondary feature of the system
    Q6 - The question is not clear to me. The de-energizer is intended to be a mobile platform that can be deployed to rail accident sites or used in rail maintenance shops.