| 摘要 |
A frequency converter (1) is used to produce at least one frequency converter output voltage (S1, S2, S3) for an electric motor (2), wherein the at least one frequency converter output voltage (S1, S2, S3) has a prescribable frequency converter output voltage amplitude (AA) and a prescribable frequency converter output voltage frequency (AF). The frequency converter (1) has: a clocked DC-DC voltage converter (3) that is designed to take an input DC voltage (UE) with an input voltage level and produce a DC-DC voltage converter output voltage (UA) with a DC-DC voltage converter output voltage level, wherein the DC-DC voltage converter (3) is designed to produce the DC-DC voltage converter output voltage level on the basis of the prescribable frequency converter output voltage amplitude (AA), and a clocked inverter (4) with a number of controllable switching means (5), which has the DC-DC voltage converter output voltage (UA) applied to it and which is designed to actuate the switching means (5) at an inverter switching frequency such that the at least one frequency converter output voltage (S1, S2, S3) with the prescribable frequency converter output voltage frequency (AF) is produced from the DC-DC voltage converter output voltage (UA). |
