Multi-Software Collaborative Modeling and Simulation of Ramped Gravity Energy Storage Traction Devices

Ramped gravity energy storage is an important prospective technology in the field of long-time large-capacity energy storage. Due to the highly coupled mechanical and electrical dynamics of the gravity energy storage system, it is difficult for the existing modeling and simulation methods to realize the quantitative analysis and comparison of the technical indexes of different schemes, which is not conducive to the system structure selection and optimization design. In this paper, the sprocket chain and tractor traction schemes are designed for the heavy block traction task of the ramp-type gravity energy storage system, and the operating characteristics and energy conversion efficiency of the two schemes are compared by using multi-software collaborative modeling method. The results show that the sprocket chain traction has higher energy conversion efficiency, but there are fluctuations in torque, speed and power; tractor traction can avoid fluctuations, but the energy conversion efficiency is lower. The research work in this paper provides a quantitative analysis method for the slope-type gravity energy storage system, and also provides a basis for equipment selection and optimization design.