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SMES Based Dynamic Voltage Restorer for Voltage Fluctuations Compensation

2010; IEEE Council on Superconductivity; Volume: 20; Issue: 3 Linguagem: Inglês

10.1109/tasc.2010.2041499

1558-2515

Jing Shi, Yuejin Tang, Kai Yang, Lei Chen, Li Ren, Jingdong Li, Shijie Cheng,

Magnetic Properties and Applications

This paper presents a superconducting magnetic energy storage (SMES) based dynamic voltage restorer (DVR) to protect consumers from the grid voltage fluctuations. Due to the characteristic of high energy density and quick response, a superconducting magnet is selected as the energy storage unit to improve the compensation capability of DVR. This paper analyses the operation principle of the SMES based DVR, and designs the DVR output voltage control method. The control system mainly consists of two parts, the PWM converter controller and the DC/DC chopper controller. The PWM converter controller adopts double-loop control strategy, with an inner current regulator and an outer voltage controller. Combining the coordinated control of DC/DC chopper, the DVR can regulate output voltage accurately and quickly to compensate the system voltage fluctuations. Using MATLAB SIMULINK, the models of the SMES based DVR is established, and the simulation tests are performed to evaluate the system performance.