Abstract
With the widespread use and rapid development of electric locomotives, the negative sequence and excessive phase problems of traction networks have become increasingly prominent. A hybrid railway power conditioner system (H-RPC) for co-phase was proposed, And compared with the traditional RPC system. The paper analyzed its topology and compensation principle. The design of its key parameters was given. The analysis results show that H-RPC has better compensation effect than RPC. Finally, the correctness of the H-RPC compensation effect is verified by simulation.
Highlights
With the maturity of China's high-speed rail technology, DC electric locomotives are gradually being replaced by AC electric locomotives
Based on the above background, this paper proposes a new hybrid RPC for co-phase power supply based on an impedance balanced transformer
hybrid railway power conditioner system (H-RPC) was put into operation, the unbalanced three-phase current on the network side dropped to 0.6%, and the voltage on the DC side was stable at 23KV
Summary
With the maturity of China's high-speed rail technology, DC electric locomotives are gradually being replaced by AC electric locomotives. In order to comprehensively solve the above problems, we use phase sequence rotation to balance the single-phase asymmetry of the load in the wiring mode, but the existence of the electric phase separation link limits the further development of the railway to high-speed and heavy load [1]. The railway power conditioner RPC proposed by Japanese scholars first links the two power supply arms into one whole [9,10,11],The active power can be transferred between the two arms. It has excellent compensation performance and stability, the investment cost is high. The optimal design method of LC/L parameters under fluctuating load is given. and verify the effectiveness of the system compensation effect through simulation
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