| 摘要 |
The present invention relates to a method for operating an electrical system (44), particularly in a motor vehicle (10), wherein the electrical system (44) has at least two electrical machines (14, 34) which are connected to the electrical system (44) via one controllable inverter (32, 42) each, wherein a regulated generator mode for a first instance of the electrical machines (14, 34) is initiated, characterized in that a first step involves detection of a drop below a first prescribable voltage value for the electrical voltage available in the electrical system (44), and then a second step, on the basis of an induced freewheeling voltage that is to be expected for one of the electrical machines (14, 32), involves one of the inverters (32, 42) being selected, which is associated with an electrical machine (14, 32), and being actuated such that the electrical machine (14, 34) connected thereto is operated in electrical freewheel, with the result that the rotation of said machine causes it to induce a freewheeling voltage which is applied in the electrical system (44), and then a third step involves detection of the rise above a second prescribable voltage value for the induced electrical freewheeling voltage available in the electrical system (44), and then a fourth step involves the inverter (32, 42) of the first electrical machine (14, 34) being actuated such that the first electrical machine (14, 34) connected thereto is operated in regulated generator mode. |
