男人J桶女人P免费视频,无毛一线天嫩穴19,av频在线观看免费高清下载,淫欲淫色淫香视频,成人网站免费观看视频,亚洲精品生活一区二区三区,国产一区二区三区91,日本精品床戏做爰

Inverter-feedback regenerative braking energy utilization device for urban rail transit applications. The device has a variety of working modes, working in inverter mode, through the voltage stabilization control of the DC side of the traction network, to ensure the full play of the train regenerative electric braking function, reduce the brake tile wear, improve the tunnel environment, the remaining braking energy back to the AC grid, reduce traction energy consumption, to achieve the re-use of the train regenerative braking energy; working in rectifier mode, improve the quality of the rectifier unit power supply; working in reactive power compensation mode, to achieve distributed reactive power compensation, reduce the line loss, reduce the investment in reactive power compensation equipment at the main office. The device adopts a three-level main circuit topology, which has a low impact on the harmonics of the AC grid, and has a networked multi-device intelligent coordination control function to ensure that the braking energy is utilized by adjacent vehicles in priority.