MVME3604-1131

MVME3604-1131

MVME3604-1131

MVME3604-1131看完了内转子无刷直流电机的结构，我们来看外转子的。其区别就在于，外转子电机将原来处于中心位置的磁钢做成一片片，贴到了外壳上，电机运行时，是整个外壳在转，而中间的线圈定子不动。外转子无刷直流电机较内转子来说，转子的转动惯量要大很多(因为转子的主要质量都集中在外壳上)，所以转速较内转子电机要慢，通常KV值在几百到几千之间。也是航模主要运用的无刷电机 顺便啰嗦一下吧。无刷电机KV值定义为：转速/V，意思为输入电压每增加1伏特，无刷电机空转转速增加的转速值。比如说，标称值为1000KV的外转子无刷电机，在11伏的电压条件下，大空载转速即为：11000rpm(rpm的含义是：转/分钟)。 同系列同外形尺寸的无刷电机，根据绕线匝数的多少，会表现出不同的KV特性。绕线匝数多的，KV值低，高输出电流小，扭力大;绕线匝数少的，KV值高，高输出电流大，扭力小。我先前测试过穿越机2204电机的极限电流，单电机能彪上25A，而2212系列电机15A都上不了。

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