The present invention mainly relates to a method of controlling a rotating electric machine 10 for a vehicle including a stator 18 and a winding rotor 19, wherein the winding rotor 19 is designed to pass an excitation current, and The machine 10 can operate in alternator mode and motor mode, and when the rotating electric machine 10 passes from one operating mode to another operating mode, this method means that the excitation current is a strict positive minimum intermediate setpoint value. And controlling the rotor 19 to change from the first set point value to the second set point value, and the intermediate set point value corresponds to the minimum excitation current, which rotates when the minimum excitation current is exceeded. The electric machine carries DC current in generator mode and below that, the rotating electric machine does not carry DC current.
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