Research on Maglev Flywheel Energy Storage System for Electric Vehicle

Abstract:

In order to improve the energy efficiency of electric vehicle (EV) power battery, and increase the start-up power of EV, a kind of maglev flywheel battery storage energy system is designed on EV, it is active suspension controlled at five degrees of freedom. The system suspension control principle is expounded, and the radial single freedom transfer function of the maglev flywheel is established combining with a digital PID control algorithm. The frequency spectrum characteristic of the transfer function and the flywheel rotor trajectory curve are simulated, and the 30000 r/min rotation experiment of the maglev flywheel battery prototype is realized. The experiment result shows that the maglev flywheel rotor may high speed and steadily spin, and has good energy storage ability. The maglev flywheel battery storage energy system can assist the EV power battery work, improves the battery charge and discharge properties and prolongs the service life of the motive power battery.

• Periodical: Advanced Materials Research (Volumes 608-609)
• Pages: 1078-1085
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.608-609.1078
• Online since: December 2012
• Authors: Hui Gao, Chang Guo Zhai, Liang Liang Chen, Huai Liang Li
• Keywords: Electric Vehicle (EV), Energy Storage System (ESS), Frequency Spectrum Characteristic Curve, Maglev Flywheel Battery, PID Control Algorithm

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