What Are The Different Types Of Brakes And Braking Systems? Generally, brakes work by converting the kinetic energy of moving objects into heat through friction on both sides of the wheel. A regenerative braking system, for example, converts much of the energy into electrical energy, which can then be stored for use at a later date. The disc, blade, or rail of an eddy current brake is heated by the magnetic fields that convert kinetic energy into electricity. When it comes to troubleshooting and servicing, it's always helpful to know what fits your car. Modern cars generally use the following types of brake systems.