A Novel Magnetic Suspension Flywheel Battery with a Multi-Function Air Gap

Weiyu Zhang () and Shengyan Lv
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Weiyu Zhang: School of Electrical and Information Engineering, Jiangsu University, Xuefu Road 301, Zhenjiang 212013, China
Shengyan Lv: School of Electrical and Information Engineering, Jiangsu University, Xuefu Road 301, Zhenjiang 212013, China

Energies, 2023, vol. 16, issue 19, 1-18

Abstract: In this study, a novel magnetic suspension flywheel battery with a multi-function air gap is proposed. Based on the unique multi-function air gap, the degrees of freedom between the control magnetic circuits can be independent of each other, reducing the coupling effect between degrees of freedom. The proposed flywheel battery system topology inherits the unique advantages of the magnetic suspension flywheel battery. However, due to the breakthrough of the overall topology in the air gap, flywheel, and protection measures, the system has more advantages in the precise design of the magnetic circuit, decoupling, high-stability control, and energy storage. First, the advantages, geometric characteristics, and magnetic circuit of the flywheel battery system are introduced and analyzed. Then, the position and length of the multi-function air gap and conventional air gap in the magnetic circuit are optimized to ensure the best magnetic performance of the entire magnetic circuit. Then, the flywheel, motor, and protection settings are introduced in detail. Finally, performance tests are conducted, and the good experimental results show that the proposed flywheel battery has good anti-interference ability and decoupling ability.

Keywords: flywheel battery; magnetic suspension; stability; magnetic bearing; foundation motions (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2023
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