The existence of neutral sections and negative sequences are the shackles that restrict the development of the electrified railway to high-speed and heavy-load.Advanced traction power supply system provides an opportunity to eliminate the above problems,but the existing schemes still have drawbacks such as a large number of devices,high cost and poor reliability.Therefore,a new hybrid advanced traction power supply device is designed based on the existing traction transformer.Then,the input side ripple power is offset by a common DC bus to further reduce the number of active/passive devices and capacitive capacity.At the same time,aiming at the problem of secondary ripple and load power impact on the DC side,a compound control strategy of input side is proposed to effectively solve the problem of harmonic transmission and impact fluctuation.Finally,the feasibility and reliability of the proposed device and compound control are verified by simulation and experiment.
关键词
新型混合式/牵引供电装置/公共直流母线/复合控制
Key words
new hybrid/advanced traction power supply system/common DC bus/compound control
维普
万方数据