Abstract：This article mainly aims at the urban rail transit system on a newregenerative braking energy utilization technology, bidirectional variable flow regenerative energy absorption and utilization system, namely therectifying device itself is not only the rectifier is inverter, first introduces the principle, the structure of the device, explained the system mainlythree functions namely inverter feedback function, function of traction rectifier and regulator and unit power factor control function, focus on the analysis of the characteristics, the system compatibility, systemprotection grid compatibility, system power factor, system efficiency andsystem overall characteristic, finally obtains the bidirectional variable flowregenerative energy absorption and utilization system is the city a moreeconomical solution for application and effective conclusion technologythe use of rail transportation of renewable energy.
2015, Vol. 16 
