Parallel Control Algorithm of Thyristor Dual Converter Power System for DC Power Substation of Railway

A parallel control algorithm of thyristor dual-converter power system for the DC power supply of railway is proposed. The circulating current and current imbalance generated during parallel operation can be limited to control the output voltage of each power system by using the proposed parallel control algorithm. The proposed control algorithm can also eliminate output current sensor to achieve the same output response without additional costs. The validity of the proposed algorithm is verified through simulation and experiment.

[1]  Sung-An Kim,et al.  Initial firing angle control of 12-pulse parallel connected thyristor dual converter for urban railway power substations , 2016, 2016 International Symposium on Power Electronics, Electrical Drives, Automation and Motion (SPEEDAM).

[2]  Se-Wan Choi,et al.  Parallel Operation Control Method of Grid-connected Inverters with Seamless Transfer for Energy Storage System in Microgrid , 2016 .

[3]  Chang-Hee Lee,et al.  Control Algorithm of Thyristor Dual Converter Power System for Railway Power Substations , 2015 .

[4]  Qing-Chang Zhong,et al.  Robust Droop Controller for Accurate Proportional Load Sharing Among Inverters Operated in Parallel , 2013, IEEE Transactions on Industrial Electronics.

[5]  Michael Z. Q. Chen,et al.  Centralized Control for Parallel Operation of Distributed Generation Inverters in Microgrids , 2012, IEEE Transactions on Smart Grid.

[6]  Juan C. Vasquez,et al.  Hierarchical Control of Droop-Controlled AC and DC Microgrids—A General Approach Toward Standardization , 2009, IEEE Transactions on Industrial Electronics.

[7]  Josep M. Guerrero,et al.  Output impedance design of parallel-connected UPS inverters with wireless load-sharing control , 2005, IEEE Transactions on Industrial Electronics.

[8]  F. Blaabjerg,et al.  Sharing of nonlinear load in parallel connected three-phase converters , 2000, Conference Record of the 2000 IEEE Industry Applications Conference. Thirty-Fifth IAS Annual Meeting and World Conference on Industrial Applications of Electrical Energy (Cat. No.00CH37129).

[9]  Ching-Lung Chu,et al.  Combination voltage-controlled and current-controlled PWM inverters for UPS parallel operation , 1995 .

[10]  T. Kawabata,et al.  Parallel Operation of Voltage Source Inverters , 1986, 1986 Annual Meeting Industry Applications Society.