Analysis of Gravity Energy Storage System with Multiple Pistons

Tan, Yong Xin (2022) Analysis of Gravity Energy Storage System with Multiple Pistons. Final Year Project (Bachelor), Tunku Abdul Rahman University College.

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Abstract

The energy storage system is essential to address the intermittency of renewable systems. The gravity storage system (GES) is one of the latest technology nowadays. However, the GES has drawbacks on the short discharging time and has limited storage capacity. This project proposed a new dynamic model of gravity energy storage to address the above mentioned issues by constructing a multiple piston system in Simulink, Matlab. The proposed methodology will provide a short response time in terms of seconds. The bouncing impact when the piston comes to a rapid standstill is decreased since the entire weight is split among two pistons. This project will investigate the proposed dynamic model in the mathematical expression. Besides, the charging and discharging operation modes are developed and tested with given input settings. Lastly, the model will be evaluated for its validity and feasibility in order to meet the requirement of the Malaysian Distribution Code. The GES proposed aims for small-scale end-use that consists of an input setting, control system, induction motors and their controllers, hoist system, DC generator, inverter with its controller and a domestic load.