er thyristor rectifier bridge according to the simulation needs to choose the appropriate parameters, the flat wave reactor and dc motor should be in the actual calculation value, no relevant requirements of the parameter value by default. (3) the choice of the simulation time according to the actual situation and decide, on the premise ofa full waveform. (4) controller and feedback parameters according to the calculation results into. (5) if the problems in the double closed loop simulation, can beon the basis of open loop, step by step increase the feedback loop, adjust the link and limiting link, debugging unceasingly, the finishing of the double closed loop simulation. (6) parameter debugging, we also should be patient observation, careful analysis, comparing and optimizing the system.