基于DSP的均压均流测试系统的设计

AbstractTHE DESIGN OF CURRENT SHARE AND VOLTAGE TEST SYSTEM BASEON DSPAbstractLocomotive general adopt alternating current to power-up,the alternating current comefrom the drag winding of main converter was commutated by the rectifier,then supply directcurrent to the drag electric motor to make the drag electric motor generate torque drivelocomotive turning.The behavior of rectifier effect the locomotive's ability of runningdirectly,but the commutate component of rectifier occur broke through,burn down blastingbreakdown and so on easily,thereby lead the rectifier to short circuit or block.The writeraim at the issue did detail research and exploration,designed a kind of impulse fashion testsystem of the locomotive rectifier current share and voltage share based on DSPFirstly analyzed the framework function,working characteristics and the reason ofbreakdown,On this foundation designed the current share and voltage share test impulsecircuit,impulse flip-flop circuit,access signal processing circuit,signal collect circuit andthe interface circuit and so on hardware circuit,and developed a set of DSP software main ofADC subprogram and serial interface communication subprogram,analyzed the functionprinciple and flow sheet of hardware and software.Finally made a summa of theexcogitation of the test system,affirmed the excogitation of the system.Key Words:Locomotive,DSP,rectifier,current share and voltage share test