System and method for reinjection of retard energy in a trolley-based electric mining haul truck
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United States of America Patent
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Oct 8, 2013
Grant Date -
Apr 28, 2011
app pub date -
Oct 23, 2009
filing date -
Oct 23, 2009
priority date (Note) -
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Abstract
Retard energy regenerated from an electrical motor during braking action is reinjected into a power system via trolley lines. The retard energy may be transmitted to a bidirectional electric substation and returned to a utility grid. The retard energy may also be transmitted to an auxiliary energy storage system, such as an ultracapacitor system or a battery system. Installing trolley lines for mining haul trucks on a downhill slope may be used to capture and re-use substantial quantities of retard energy.
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