Acceleration of synchronous electric machine with optimized thermal budget

The invention relates to a method (100) for operating a synchronous machine (2), comprising the following steps: providing (110) a source DC voltage U =, Q or a source AC voltage U-, Q having a source frequency fQ; -converting (120) the source DC voltage U =, Q or the source AC voltage U-, Q into a target AC voltage U-, Z having a target frequency fZ in the inverter or frequency converter (1) by means of a time-modulated switching of the assembly (1a) consisting of semiconductor switches, the target AC voltage U-, Z having a target frequency fZ being controlled during at least one acceleration process of the synchronous machine (2), switching (130) the component (1a) consisting of semiconductor switches with an average modulation frequency fM, which is lower than a nominal frequency fN used during steady-state operation of the synchronous machine (2) at a constant rotational speed, and feeding (140) the synchronous machine (2) with the target alternating voltage U-, Z. 一种用于运行同步电机(2)的方法(100)，所述方法包括以下步骤：-提供(110