Research on the Energy Recovery of the Excavator Slewing System Based on Hybrid Technology

Abstract

In the traditional excavator, the slewing braking energy cannot be recovered and eventually became heat. As the hybrid technology was introduced into the hydraulic excavator, it makes energy recovery possible. In this article, a new energy recovery method based on hybrid, using an electric motor instead of a hydraulic motor to drive the swing mechanism. When braking, the electric motor will enter the generator mode and the energy will be recovered and stored in super-capacitors. This method has been proved to have high energy recovery efficiency.