US 11,667,214 B2
Virtual co-phase power supply system topology suitable for electrical sectioning device at sectioning and paralleling post
Chenglin Xiong, Chengdu (CN); Rong Mei, Chengdu (CN); Shuang Song, Chengdu (CN); Zhiwei Song, Chengdu (CN); and Lu Huang, Chengdu (CN)
Assigned to Southwest Jiaotong University, Chengdu (CN)
Filed by Southwest Jiaotong University, Chengdu (CN)
Filed on Sep. 15, 2020, as Appl. No. 17/20,843.
Claims priority of application No. 202010158233.X (CN), filed on Mar. 9, 2020.
Prior Publication US 2021/0276456 A1, Sep. 9, 2021
Int. Cl. B60M 3/04 (2006.01)
CPC B60M 3/04 (2013.01) 9 Claims
OG exemplary drawing
 
1. A virtual co-phase power supply system topology suitable for an electrical sectioning device at a sectioning and paralleling post (SP) of a train system comprising a step-down transformer TR1 for transferring energy to the electrical sectioning device,
wherein the SP of the train system comprises a neutral section between a first traction feeding section β1 and a second traction feeding section β2 for a train to pass from the first traction feeding section to the second traction feeding section β2 through the neutral section,
a primary winding of the step-down transformer TR1 is electrically connected to the second traction feeding section β2,
each secondary winding of the step-down transformer TR1 is electrically connected to a rectifier unit of a plurality of rectifier units separately,
the plurality of rectifier units are connected in parallel through DC buses,
an end of the DC buses is electrically connected to a plurality of parallel inverter units,
an LC filter is provided on the DC buses between the plurality of parallel rectifier units and the plurality of parallel inverter units for filtering energy from the DC buses to produce filtered energy,
the LC filter is connected in parallel to an energy storage unit;
an output end of the inverter unit is electrically connected to a primary winding of a step-up transformer TR2, the inverter unit being configured to invert the filtered energy to produce inverted energy,
a first end of a secondary winding of the step-up transformer TR2 is electrically connected to the first traction feeding section β1, and
a second end of the secondary winding of the step-up transformer TR2 is electrically connected to a neutral section for receiving the inverted energy.