Abstract: A crane comprising a diesel-electric drive, the three-phase generator of which supplies an AC voltage circuit, further comprising a DC voltage circuit connected to the AC voltage circuit, electric motors which drive at least one rotating mechanism, a lifting mechanism and a luffing mechanism of the crane, at least one brake resistor, and a short-term energy store, which is connected to the AC voltage circuit or to the DC voltage circuit for the intermediate storage of excess energy. At least one of the electric motors is connected to the AC voltage circuit and at least one is connected to the DC voltage circuit, and the AC voltage circuit is connected to the DC voltage circuit via a rectifier such that an energy exchange is possible between the AC voltage circuit and the DC voltage circuit.

Abstract: The invention relates to a monitoring and control system for mobile lifting and transport devices such as cranes, building machines, and transport vehicles, in which status data is obtained by monitoring selected device components and conveyed to at least one control console. Data and/or control commands are transmitted from the control console to the monitoring and control system. The system is operated with an open expandable architecture of exchangeable standard PC components and uses a real-time operating system for hard real-time computing and with a user program which conforms to IEC 1131-3.