The dual-loop control strategy of railway static power regulator for V/V electric traction system

Author

Fujun, Ma ; An, Luo ; Chuanping, Wu ; Jingbing, Wu ; Gang, Wang ; Juan, Sun ; Yin, Zhang

Author_Institution

Coll. of Electr. & Inf. Eng., Hunan Univ., Changsha, China

fYear

2010

fDate

16-18 June 2010

Firstpage

559

Lastpage

564

Abstract

A kind of RPC (Railway Static Power Conditioner) was discussed to govern power quality in V/V electric traction system of the high-speed railway at 350Km/h, which is used to carry out the comprehensive compensation of negative sequence, reactive power and harmonic currents in the traction substation. The paper analyzed the negative sequence compensation principle, and a dual-loop control strategy was proposed for RPC. A set of optimal PI parameters were obtained for inner-loop recursive PI controller with the method of third-order optimal design. A stable DC-link voltage is the prerequisite for normal operation of RPC, so a sub-PI control strategy was proposed to suppress DC-link voltage fluctuation, which is an accurate feedback control based on energy balance. Finally, the correctness of the analysis has been confirmed by the simulation and experiment results.

Keywords

Converters; Equations; Harmonic analysis; Inverters; Power system harmonics; Rail transportation; Voltage control; composite sub-PI control; comprehensive compensation; high-speed railway; negative sequence compensation; third-order optimal design;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics for Distributed Generation Systems (PEDG), 2010 2nd IEEE International Symposium on

Conference_Location

Hefei, China

Print_ISBN

978-1-4244-5669-7

Type

conf

DOI

10.1109/PEDG.2010.5545788

Filename

5545788