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Regenerative braking

A regenerative brake is an energy recovery mechanism which slows a vehicle or object by converting its kinetic energy into a form which can be either used immediately or stored until needed. This contrasts with conventional braking systems, where the excess kinetic energy is converted to unwanted and wasted heat by friction in the brakes. In addition to improving the overall efficiency of the vehicle, regeneration can greatly extend the life of the braking system as its parts do not wear as quickly.

Regenerative braking

  • Regenerative braking in trains

    Type: 
    Technology
    Sectors:
    Objective:

    Employing regenerative braking in trains can lead to substantial CO2 emission reductions, especially when applied to full stop service commuter trains (8 – 17%) and to very dense suburban network trains (~ 30%). Regenerative braking applied to freight trains can also lead to CO2 emission reductions, albeit considerably lower than for full stop service trains (~5%). When regenerative braking is employed, the current in the electric motors is reversed, slowing down the train.

  • Global Environment Centre Foundation

    Type: 
    Organisation
    Knowledge partner
    Country of registration:
    Japan
    Relation to CTCN:
    Network Member
    Knowledge Partner

    The Global Environment Centre Foundation (GEC) is an entity that supports the UNEP’s International Environmental Technology Centre (IETC), based in Japan. GEC is dedicated to the transfer of environmentally sound technologies, in both developing countries and countries with economies in transition. The foundation aims to contribute to Japan’s international efforts on the environment, sharing project collaborations as well as promoting Japan’s rich conservation knowledge and experience in developing nations.

  • FREEWHEELING HYDRAULIC TRANSMISSION FOR VEHICLES

    Type: 
    Product

    A freewheeling hydraulic Pump/Motor installed between the engine and the gear box is connected to a low pressure hydraulic accumulator on one side and to a high pressure hydraulic accumulator on the other side. 1. The braking and deceleration energy is converted to hydraulic energy and stored in the high pressure accumulator to recycle the energy efficiently . 2.

  • Regenerative Braking

    Type: 
    Product

    Mitsubishi Electric Corporation has developed a new technology that reduces total railway energy consumption by up to five percent. The technology enables full use of regenerative power in trains through real-time control of voltages at nearby substations. The five-percent reduction of total railway energy consumption was achieved in numerical simulations using a high-density urban railway model. 

  • Grütter Consulting

    Type: 
    Organisation
    Country of registration:
    Switzerland
    Relation to CTCN:
    Network Member
    Sector(s) of expertise:

    Grütter Consulting (GC) develops sustainable transport projects including policies development, biofuels implementation, urban and inter-urban mobility, electric, gas-powered vehicles, freight and logistics projects. It has implemented various projects in road-based transport (urban and inter-urban), rail and shipping with the objective to identify options for reducing the environmental footprint of transport. Also, GC realizes financial structuring within the framework of its projects. 

  • Knowledge Management Basics

    Type: 
    Publication
    Knowledge Management Basics

    To solve any problem, people need knowledge. The knowledge is there somewhere, described in some way, but it is often unavailable to those who need it most.