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通过改变主极极弧形状来改善直流电机换向器上电位条件的可能性是基于改善主极磁场分布和减少电枢反应之上的。我们知道电机的有关特性与等效气隙δ_e有关,而与δ_M、δ_0的比值无关。这就为改变极弧形状同时保证电机互换性提供了条件。
The possibility of improving the potential conditions of the DC motor commutator by changing the shape of the main pole arc is based on improving the distribution of the main pole magnetic field and reducing the armature reaction. We know that the relevant characteristics of the motor and the equivalent air gap δ_e related, and δ_M, δ_0 ratio has nothing to do. This provides the conditions for changing the shape of the pole arc while ensuring the interchangeability of the motor.