| 摘要 |
Method for adjusting the efficiency of a synchronous machine, in particular of a synchronous motor, comprising:
calculating the efficiency of the synchronous machine in a preset operating condition;
measuring a phase current (I) in the windings of the stator of the synchronous machine in said preset operating condition;
calculating the size of an angle (±) between a phase voltage (V) and an induced electromotive force (E) in the windings of the stator of the synchronous machine in said preset operating condition;
measuring a phase current (I') in said windings of the stator in an operating condition that is different from said preset condition;
calculating the size of the angle (±') between said phase voltage (V) and said induced electromotive force in said operating condition different from said preset condition;
regulating the value of said phase voltage (V) and of said excitation current in such a manner as to return the value of the size of said angle to the value calculated in said preset operating condition. |
