直流电动机一般按以下三种方法进行起动：
1.直接起动
直流电动机直接起动不需要附加起动设备，操作方便，但起动电流很大，*冲击电流可达额定电流的15--20倍。因此，电网将受到电流冲击，所传动的机组将受到机械冲击，电动机的换向不良。通常，只有功率不大于4千瓦，起动电流为额定电流6--8倍的直流电动机才适用直接起动。
2.电枢回路串联电阻起动
起动时，电枢回路上串入起动电流，以限制起动电流。起动电流为一可变电阻，在起动过程中可及时逐级短接。
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