Product Description

The metro power-feeding transformers are a new generation locomotive braking regenerative energy processing equipment developed by Chenyu Electric to meet the market demand for green and environmentally friendly operation of rail transit locomotives. This energy feedback device belongs to the inverter feedback type. The energy feedback device comprehensively judges whether there is a train in the regenerative braking state on the DC power grid based on the detection signals of various sensors. Once it is confirmed that the train is in the regenerative braking state and needs to absorb energy, the system starts the absorption process. The energy feedback device converts the energy generated during locomotive braking into AC400V voltage, automatically tracks the AC400V bus voltage, and supplies power to the load. The regenerated energy is consumed on the electrical equipment or transmitted back to the 35kV/10kV power grid through an isolation transformer. In the DC traction power supply system, the regenerative braking energy absorption device is a subsystem engineering, and its role is related to the stability of the system.

Product features

Compared to previous devices, this product has fast dynamic response, small grid connected current harmonics (THD less than 3%), high feedback energy efficiency (greater than 98%), high stability, easy capacity expansion, control of operating voltage during vehicle electric braking, and ensures vehicle operation. After the operation of the inverter device, the energy-saving effect is significant, which is in line with the national policy of energy conservation and emission reduction. At the same time, it reduces the ventilation and heat dissipation requirements inside the vehicle operation tunnel, and improves the operating environment quality of related equipment. During the 14th Five Year Plan period, with the theme of energy conservation, environmental protection, and greening of rail transit deeply rooted in people's hearts, the prospects of this energy feedback device are promising.