Regenerative Braking

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regenerative braking

[rē′jen·rəd·iv ′brāk·iŋ]
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.


References in periodicals archive ?
This system configuration results in no change in pedal feel from traditional brake systems and a seamless blending of regenerative brake and hydraulic brake output based on driver demand.
The ESC-R joins TRW's Slip Control Boost (SCB) to offer customers a choice of systems that offer full stability control performance and compatibility with regenerative brake systems for hybrid vehicle architectures.
Continental: Working in conjunction with a hybrid drive system, [Continentals Regenerative Brake System] allows energy recovery during braking.
Only when the deceleration is not sufficient are the conventional brakes activated via the Regenerative Brake System.
The Regenerative Cooperative Brake System calculates braking force generated by brake pedal operation and controls the regenerative brake force to convert kinetic energy into electric energy, optimizing energy regeneration.
But with the new regenerative brakes on electric and hybrid cars, it may no longer be such a stupid maneuver.
9mpg) with CO2 emissions remaining at 139g/km Helping the ASX achieve its impressive economy and emissions figures are low rolling resistance tyres, regenerative brakes and intelligent power management.
The vehicle features a range of fuel-saving technologies, including stop/start functionality that shuts down the engine at stop signs and traffic lights, regenerative brakes and an electric motor.
Toyota ended days of speculation on Tuesday when it recalled more than 400,000 hybrid models, including the latest version of its iconic Prius, to rectify a problem with the regenerative brakes that help charge the cars' electric batteries.
The model features regenerative brakes and standard hydraulic brakes.
24-28, in Detroit, researchers from private industry described their designs of regenerative brakes for electric cars.

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