Regenerative Braking

regenerative braking

[rē′jen·rəd·iv ′brāk·iŋ]
(electricity)
A system of dynamic braking in which the electric drive motors are used as generators and return the kinetic energy of the motor armature and load to the electric supply system.

Regenerative Braking

 

an electric braking system for modes of transportation operated by electricity, for instance, electric trains and streetcars, or for industrial electric drives. Electrical energy is regenerated, or balanced, by converting the mechanical energy of the transportation system or electric drive into electrical energy, which is returned to the power line.

Regenerative braking is based on the reversibility of electrical machines. During regenerative braking a traction motor operates as a generator and creates the necessary drag torque on the shaft, which provides for the braking of the drive system. Electrical energy is produced by a motor-generator either from the potential energy of the electric transportation system as it moves down a grade at a constant speed or from the kinetic energy produced as the drive system is decelerated. Regenerative braking represents a considerable saving in electrical energy. It is most effective on larger modes of transportation, for example, on electric locomotives that operate on main lines, on suburban electric trains, and on modern trolleybuses.

A regenerative braking system must meet a number of special requirements because only generators with dropping external characteristics can be used. Therefore, traction motors with series excitation are switched over to separate excitation for regenerative braking.

N. A. ROTANOV

References in periodicals archive ?
M2 PRESSWIRE-August 21, 2019-: Automotive Regenerative Braking System Market 2019: Global Segments, Industry Growth, Top Key Players, Size and Recent Trends by Forecast To 2023
It features regenerative braking technology and an electro-hydraulic brake-assistance system.
Tenders are invited for Works of execution of the "constructive project for the installation of a regenerative energy regenerative braking converter in the substations of three cantos, Alcal de henares, Pinto, Legans, Granollers and castelbisball" as well as the services of "maintenance of the installation of a regenerative braking energy recovery inverter in substations of three cantos, Alcal de henares, Pinto, Legans, Granollers and castelbisball "
At 100 per cent state of charge, Musk explained, regenerative braking doesn't work, because when the battery is full the car is less energy efficient.
Each crane is capable of moving up to 600 transport units per hour while reducing energy consumption with regenerative braking. Witron, witron.com.
Regenerative braking technology captures up to 90% of the energy normally lost during braking to replenish the battery.
For instance, the regenerative braking system uses electric motor to generate electricity by utilizing the kinetic energy.
The propulsion system's regenerative braking slows down the load when the operator reduces throttle input, even on ramps or inclines.
These include regenerative braking, where electricity is fed back into the grid when trains apply the brakes.
Automotive braking system market is further segmented based on technology into antilock braking system, electronic stability control and regenerative braking system.
Implementation of regenerative braking is very important because of effective usage of storage energy in batteries.
Regenerative Braking function (Regen) is a key feature in Hybrid Electric Vehicle technology [1].

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