A new hybrid filter based on differential current control method for low‐order harmonic suppression in Tokamak power system. (21st July 2017)

• Record Type: Journal Article
• Authors: Lu, Jing; Fu, Peng; Li, Jun; Mao, Huafeng; Shen, Xianshun; Xu, Liuwei; Wu, Yanan
• Other Names: Şahin Sümer guestEditor.
• Is Part Of: International journal of energy research. Volume 42:Number 1(2018)
• Page Start: 82
• Page End: 90
• Publication Date: 2017-07-21
• Subjects: differential current control -- hybrid filter -- low‐order harmonic suppression -- Tokamak power system; Power resources -- Periodicals; Power (Mechanics) -- Periodicals; Power resources -- Research -- Periodicals; 621.042
• DOI: 10.1002/er.3829
• Languages: English
• ISSNs: 0363-907X

Abstract

Summary: With high‐power, high‐parameter operation of Tokamak device, not only characteristic harmonics but also much noncharacteristic harmonics, especially below the third‐order harmonics, present in its power supply system. These low‐order harmonics, which further amplified by the capacitive impedance in system, will endanger the reliable operation of Tokamak device and the power supply. Although Tokamak devices have taken some filtering measures, the resonance of low‐order harmonics could not be completely prevented. In this paper, a hybrid filter based on differential current control method is proposed, which can effectively increase the filtering capability. The hybrid filter was mainly analyzed and validated in EAST power supply system. The results show that it can restrain the resonance and suppress low‐order harmonics in the system and can be extended to large‐capacity occasions.