Mobile working machine
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United States of America Patent
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Jun 14, 2016
Grant Date -
Jul 10, 2014
app pub date -
Jan 6, 2014
filing date -
Jan 4, 2013
priority date (Note) -
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Abstract
A mobile working machine includes an energy source, a storage circuit for storing electrical energy, a first electronic power converter stage between the storage circuit and the energy source, an electrical machine for driving actuators, a second electronic power converter stage between the storage circuit and the electrical machine, and a control system for controlling the first electronic power converter stage responsive to the power taken by the second electronic power converter stage from the storage circuit, the control system providing a control signal path from the storage circuit to the first electronic power converter stage. The signal processing properties of the control signal path are dependent on the electrical energy stored by the storage circuit in order to allow the electrical energy to vary, but within desired limits, so as to reduce the peak power taken from the energy source.
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