The dual-supply electric locomotive is also called the battery double-type power locomotive, the wire-battery locomotive, etc., and the place is called differently. Its main features are: (l) The whole machine adopts the form of bicycle double cab. The structure is compact and reasonable, the driver looks at the line of sight, is flexible, easy to use and maintain, and low in cost. Its cost is about 10% higher than the battery motor car of the same specification.
(2) In order to adapt to the two working conditions of the wired storage battery and reduce the starting energy loss, the locomotive adopts thyristor chopping voltage regulation for starting and speed regulation in both operating conditions. In order to realize the conversion between the two working conditions of the wiring and the battery and the mutual locking during operation, the system has a dedicated explosion-proof contactor box, and two dedicated DC contactors are installed in the box.
(3) In order to ensure reliable braking of the locomotive, the locomotive is equipped with two sets of braking devices, namely hand brake brake and air brake, to realize the working brake, emergency braking and parking brake of the locomotive.
(4) In order to facilitate the driver to understand the operating conditions of the locomotive and various faults. A dedicated combination display device is installed in the two compartments of the locomotive. The built-in voltage digital display has the functions of wiring, battery condition indication, battery over-discharge and chopper out-of-control display and protection. There are also electrical interlocks between the two cab controllers, overload and short circuit protection. According to the needs of users, a gas alarm power-off device can also be installed.
