Space-vector based current control of permanent-magnet synchronous motor/generator drive applied to flywheel energy storage system

Author(s):  
Yuan-Chih Chang ◽  
Jian-Cheng Chen ◽  
Jui-Teng Chan ◽  
Kun-Han Sun
2013 ◽  
Vol 392 ◽  
pp. 576-581
Author(s):  
Xue Liu ◽  
Xin Jian Jiang ◽  
Long Fei Li

Flywheel Energy Storage System (FESS) has become an important research field because of the energy problem. To solve the control of Permanent Magnet Synchronous Motor (PMSM) and Bi-directional power converter, both charging and discharging control strategiesthe Compound Control for charging and the Integrated Optimization Flux-Weak Control for discharging are proposed, together with the dual-loop control and simulation results. Based on these analysis and results, a high-power DSP-controlled experiment platform is set up to test the proposed strategies. Simulation and experiment results show that the FESS can run smoothly both under charging and discharging conditions so that both the strategies and the platform are effective.


Energies ◽  
2021 ◽  
Vol 14 (12) ◽  
pp. 3622
Author(s):  
Wen Ji ◽  
Fei Ni ◽  
Dinggang Gao ◽  
Shihui Luo ◽  
Qichao Lv ◽  
...  

The motor is an important part of the flywheel energy storage system. The flywheel energy storage system realizes the absorption and release of electric energy through the motor, and the high-performance, low-loss, high-power, high-speed motors are key components to improve the energy conversion efficiency of energy storage flywheels. This paper analyzes the operating characteristics of the permanent magnet synchronous motor/generator (PMSG) used in the magnetically levitated flywheel energy storage system (FESS) and calculates the loss characteristics in the drive and power generation modes. Based on this, the electromagnetic part of the motor is optimized in detail. Aiming at this design, this paper calculates the loss characteristics of driving and power generation modes in detail, including its winding loss, core loss, rotor eddy current loss and mechanical loss. The calculation results show that the design meets the loss requirements. It can reduce the no-load loss of the permanent magnet synchronous motor at high speed and improve the energy conversion efficiency, which gives this system practical application prospects.


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