METHOD FOR CONTROLLING A MOTOR, FREQUENCY CONVERTER AND CONVERTER MOTOR

摘要

The invention relates to a frequency converter (4) for the semiconductor switches (T1, T2, T3, T4, T5, T6) of which a maximum thermal load is repeatedly determined, a switch-on duration and/or a star point voltage potential being modified, at least for the semiconductor switch (T1, T2, T3, T4, T5, T6) for which the thermal load is at a maximum, in such a way that the thermal load for said semiconductor switch (T1, T2, T3, T4, T5, T6) and/or a semiconductor component (D1, D2, D3, D4, D5, D6) associated therewith is reduced.