| 摘要 |
An electrical drive device (1) comprises a control circuit (3) according to the invention, which is connected to a voltage source (5) on the input side and to an electric drive motor (4) on the output side. The control circuit (3) comprises two separate return conductors (13, 35) which are connected to each other at a connection point (36). One return conductor (13) is connected to the ground terminal (12) of the control circuit (3). Another return conductor (35) is connected to a motor converter (14), a converter control (15) and a back-up capacitor (19). This means, the currents (is, ia) flowing in a back-up circuit (31) and a control circuit (32) are confined to the control circuit (3) and separated from a housing (10), for example the chassis of a motor vehicle. As a result, the electrical drive device (1) has low interference emissions. |
