Crane, in particular mobile port crane, comprising a hybrid drive system
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United States of America Patent
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Jun 16, 2015
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app pub date -
Feb 10, 2011
filing date -
Feb 11, 2010
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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.
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