Abstract
A model for supercapacitor voltage equalization strategy is analyzed, and on this basis a supercapacitor voltage equalization method for Rubber Tyred Gantry Crane (RTG) energy saving system is proposed, namely active voltage equalization method based on Buck-Boost converter. The equalizing speed of the proposed method is fast. Firstly, the working principle and process of the voltage equalization circuit is analyzed in detail. In addition, design of active voltage equalization circuit parameters and control strategy are given. Finally, simulation analysis of the series connection of supercapacitors module is performed. Results show that this method for equalizing voltage can avoid over-voltage of each cell and possess practicable and high value for supercapacitor RTG energy saving system.
Highlights
Supercapacitor is a novel energy storage device based on the principle of the double layer-electrolyte capacity, which has many merits such as long lifetime, high efficiency, fast dynamic response, etc
Simulation analysis of the series connection of supercapacitors module is performed. Results show that this method for equalizing voltage can avoid over-voltage of each cell and possess practicable and high value for supercapacitor Rubber Tyred Gantry Crane (RTG) energy saving system
In view of the energy of the high-voltage supercapacitors is directly transferred to the low-voltage supercapacitors, this paper proposes an effective voltage equalization method-Active Circuit of Voltages Balance for the Series Supercapacitors
Summary
Supercapacitor is a novel energy storage device based on the principle of the double layer-electrolyte capacity, which has many merits such as long lifetime, high efficiency, fast dynamic response, etc. The power driver system in energy -saving RTG is composed of the diesel generator set, power balance system (made by supercapacitors), controller and the rising electromotor. Supercapacitors are used for storing energy from which electromotor generates and brakes energy when the load is fallen down, the supercapacitors release the energy which has been stored when the load is raising. Due to the lower voltage of a single supercapacitor, generally speaking, the series and parallel connection of supercapacitors form the energy storage module to meet the energy storage capacity and higher voltage requirements. Energy loss and the high equalizing speed in the process of charging and discharging
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
