The design of current share and voltage test system based on DSP

Locomotive general adopt alternating current to power-up, the alternating current come from the drag winding of main converter was commutated by the rectifier, then supply direct current to the drag electric motor to make the drag electric motor generate torque drive locomotive turning. The behavior of rectifier effect the locomotive's ability of running directly, but the commutate component of rectifier occur broke through, burn down blasting breakdown and so on easily, thereby lead the rectifier to short circuit or block. The writer aim at the issue did detail research and exploration, designed a kind of impulse fashion test system of the locomotive rectifier current share and voltage share based on DSP. working characteristics and the reason of breakdown, On this foundation designed the current share and voltage share test impulse circuit, impulse flip-flop circuit, access signal processing circuit, signal collect circuit and the interface circuit and so on hardware circuit, and developed a set of DSP software main of ADC subprogram and serial interface communication subprogram, analyzed the function principle and flow sheet of hardware and software. Finally made a summa of the excogitation of the test system, affirmed the excogitation of the system.