Title :
A novel comprehensive compensator for electrified railway system
Author :
Wang, Yue ; Wang, Zhaoan ; Yang, Jun ; Liu, Jinjun ; Fu, Zhiping ; Duan, Yong ; Hua, Yahan
Author_Institution :
Xi´´an Jiaotong Univ., China
Abstract :
Based on the topology consisting of several branch of thyristor switched filters (TSF) and a small rating active power filter (APF), a novel comprehensive compensator is proposed, which compensates for harmonics and reactive power in electrified railways. A cascaded multilevel inverter constructs the main circuit of the APF in the novel compensator. A new method detecting specified order harmonic and a combining control strategy are proposed for the first time. Particular attention has been paid to designing a suitable control law for a TSF bank and its implementation in a real circuit. A digital control system based on double DSPs was designed. Finally, methods of estimating VA rating and designing coupling transformer are provided. Experimental results obtained from a 1 MVA prototype exhibit excellent performance of the new comprehensive compensator.
Keywords :
active filters; digital control; digital signal processing chips; invertors; power harmonic filters; power system harmonics; railway electrification; reactive power; switched filters; thyristor circuits; traction power supplies; 1 MVA; TSF bank; VA rating; active power filter; control strategy; coupling transformer; digital control system; double DSPs; electrified railway system; multilevel inverter; novel compensator; reactive power; thyristor switched filters; topology; Active filters; Circuit topology; Digital control; Inverters; Power harmonic filters; Power system harmonics; Rail transportation; Railway electrification; Reactive power; Thyristors;
Conference_Titel :
Power Electronics Specialist Conference, 2003. PESC '03. 2003 IEEE 34th Annual
Print_ISBN :
0-7803-7754-0
DOI :
10.1109/PESC.2003.1216592
