Design and Experimental Verification of a Regenerative Brake System with a Spiral Spring and Gears

Energy regenerative systems consisting of a combustion engine and an electric motor are widely used mainly for automobiles. However it is difficult to apply this type of hybrid system to personal mobilities and industrial machines in a factory, and thus the authors have developed a new type of regenerative brake systems. This study proposes a regenerative brake system using a spiral spring and magnetic gears or planetary gears instead of using an electric motor and a battery. Experimental results demonstrate the characteristic and effectiveness of the proposed systems, in which the regenerative ratio of approximately 30% with magnetic gears and 47% with planetary gears is confirmed.