Power supply method and device for alternating-direct current locomotive upon unpowered conveying
A technology of fire-free return and power supply device, applied in the field of rail transit, can solve the problems of unstable power supply, inability to adjust and control the power supply, etc., and achieve the effects of stable voltage, compact design, convenient movement and disassembly and assembly
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[0045] Example one
[0046] Such as figure 1 As shown, a power supply device for AC-DC locomotives without fire return includes a power management module 2, an excitation chopper module 4, a rectification and stabilization module 3, an AC inverter module 5, and a locomotive battery 6, wherein the power management module 2 Connect with excitation chopper module 4, rectifier voltage stabilizer module 3, AC inverter module 5 and locomotive battery 6 and detect the status of each module and control each module. The output terminal of excitation chopper module 4 is excited with traction motor 1 The two ends of the coil are connected, the input end of the rectifying and stabilizing module 3 is connected to both ends of the armature of the traction motor 1, and the output end of the AC inverter module 5 is connected to the locomotive load; before the traction motor 1 of the locomotive enters the power generation state, the excitation The input terminal of the chopper module 4 and the in...
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