NATURAL COMMUTATION IN SOLID ROTOR SYNCHRONOUS MACHINES ASSOCIATED WITH STATIC CONVERTORS

Abstract

In this paper the natural commutation phenomenon in solid rotor synchronous machines is treated. An analytical approach is used, and the effect of the solid iron parts in the rotor is considered by an approximate method. The decrement time functions of the commutation currents due to the iron body are determined for the general case of salient pole machines. The results show that the rotor eddy currents modify considerably the values of the armature commutation currents and their duration.