PROCESS FOR CORRECTING THE REFERENCE FLUX OF A CONVERTER-POWERED MULTI-PHASE MACHINE AND CIRCUIT FOR IMPLEMENTING THE PROCESS

摘要

13 The invention relates to a process for correcting a precontrolled reference flux (?w) for a field-oriented control containing a reference voltage model (16) of a converter-powered multi-phase machine (4) with a speed detection device, and to a circuit for implementing the process. According to the invention, a comparison between a reference voltage (¦Uw¦) used as a setting for the converter (24) and a predetermined maximum converter output voltage (Uwmax) provides a voltage control difference (Ue) from which, by means of a flux correction controller (48), a flux control value (?x) is generated, which reduces the pre-controlled reference flux (?w) until the reference voltage (¦Uw¦) for the converter (24) is lower than or equal to the predetermined maximum converter output voltage (Uwmax). Thereby the field-oriented regulation never leaves the field-oriented range. Figure 3 DC1-30457