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An arrangement for voltage supply with an electrical machine that can be operated as a generator or as a starter is proposed, which is operated by the engine in the generator mode and which brings the engine to the requisite minimum rpm in the starting mode. The electrical machine is connected via a

An arrangement for voltage supply with an electrical machine that can be operated as a generator or as a starter is proposed, which is operated by the engine in the generator mode and which brings the engine to the requisite minimum rpm in the starting mode. The electrical machine is connected via a changer to a voltage converter that is connected to the battery of the on-board electrical system. In the starting mode, the voltage converter is bypassed by a switch element, so that the starter is supplied directly from the battery. In the generator mode, the switch element is opened, so that the generator can be operated with elevated voltage compared to the on-board electrical system voltage, and this elevated voltage is converted to the on-board electrical system voltage in the voltage converter.

대표청구항 ▼

[ I claim:] [1.] An arrangement for voltage supply, having an electrical machine that can be operated as a generator or as a starter and is drivable by an internal combustion engine and can be connected to a battery via an intermediate voltage circuit, which includes at least one voltage converter a

[ I claim:] [1.] An arrangement for voltage supply, having an electrical machine that can be operated as a generator or as a starter and is drivable by an internal combustion engine and can be connected to a battery via an intermediate voltage circuit, which includes at least one voltage converter and at least one changer, characterized in that in operation of the machine as a starter or in operation as a generator, below a predeterminable rpm the voltage converter (15) is bypassed by means of a switch element (20), and the changers (14) are connected directly to the battery 16.