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迄今,SS1型电力机车ZQ-650-1牵引电机和东风_4型内燃机车ZQDR-410牵引电机的试验,大部分采用带有升压机的反馈试验电路。这种试验电路最显著的特点之一,就是被试电机与陪试电机为相同机型,具有能量互馈(被试机为电动机工况时,陪试机为发电机工况)。整个试验电路的能量分配大致是这样:总共消耗的电能只是两台试验电机本身的损耗之和;机械损耗和铁耗由线路发电机供给,铜耗则由升压机提供。被试机(电动机工况)所需的电磁能量部分由陪试机(发电机工况)输送,
Up to now, most of the tests of the ZQ-650-1 traction motor of the SS1 electric locomotive and the ZQDR-410 traction motor of the DF4 locomotive have adopted the feedback test circuit with a booster. One of the most notable features of this test circuit is that the test motor and the test motor are the same type and have the energy mutual feedback (when the test machine is the motor working condition, the test machine is the generator working condition). The energy distribution of the entire test circuit is roughly the same: the total power consumed is only the sum of the losses of the two test motors; the mechanical losses and the iron losses are supplied by the line generator and the copper losses are provided by the booster. The test machine (motor condition) required by the electromagnetic energy part of the test machine (generator conditions) delivery,