Title :
SMES system for study on utility and customer power applications
Author :
Jiang, Xiaohua ; Chu, Xu ; Wu, Xuezhi ; Liu, Wei ; Lai, Yongchuan ; Wang, Zanji ; Dai, Yingming ; Lan, Heli
Author_Institution :
Dept. of Electr. Eng., Tsinghua Univ., Beijing, China
fDate :
3/1/2001 12:00:00 AM
Abstract :
A grid model SMES system was developed for study on utility and customer power applications. The system consists of a 20 kJ NbTi magnet, a 15 kW 12-pulse IGBT current source converter and a DSP-based controller. To reduce the heat leakage, a couple of HTS current leads were designed and fabricated which are composed of Bi-2223 tapes and have a maximum operating current of 150 A. The 12-pulse current source topology was chosen for the converter not only owing to its low total harmonic distortion (THD) but also to its high capability of injecting capacitive reactive power into network. In the controller of the system two very fast DSPs (TMS320C32) are used to implement the control algorithms and perform the generation of the firing signals, giving a high accuracy and a high speed of response
Keywords :
AC-DC power convertors; bipolar transistor switches; electricity supply industry; high-temperature superconductors; insulated gate bipolar transistors; power bipolar transistors; power semiconductor switches; power system control; rectifying circuits; superconducting cables; superconducting magnet energy storage; superconducting magnets; 12-pulse IGBT current source converter; 15 kW; 20 kJ; Bi2Sr2CaCu2O8; DSP-based controller; HTS current leads; NbTi; NbTi magnet; capacitive reactive power injection; control algorithms; customer power applications; electric utility applications; firing signals generation; grid model SMES system; superconducting magnetic energy storage; total harmonic distortion; Control systems; High temperature superconductors; Insulated gate bipolar transistors; Network topology; Niobium compounds; Power system modeling; Samarium; Superconducting magnetic energy storage; Titanium compounds; Total harmonic distortion;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
