LIMITING PEAK ELECTRICAL POWER DRAWN BY MINING EXCAVATORS
摘要
<p>The maximum electrical power drawn from an electrical power source by a mining excavator comprising electric motors is reduced by supplying supplementary electrical power from an electrical energy storage unit. The input electrical power drawn by the mining excavator is cyclic. An upper limit is set for the electrical power drawn from the electrical power source. When the input electrical power drawn by the mining excavator exceeds the upper limit, electrical power is supplied by the electrical energy storage unit, such as an ultracapacitor bank. The ultracapacitor bank may be charged by the electrical power source during off-peak intervals. Electrical power generated by electrical motors operating in a regeneration interval may also be recaptured and stored in the electrical energy storage unit.</p>
申请公布号
CA2761699(A1)
申请公布日期
2010.11.18
申请号
CA20092761699
申请日期
2009.06.19
申请人
SIEMENS INDUSTRY, INC.;CATERPILLAR GLOBAL MINING LLC;SIEMENS AKTIENGESELLSCHAFT
发明人
MAZUMDAR, JOY;KOELLNER, WALTER;HOLWECK, ANDREAS;ONSAGER, MICHAEL G.;PITTIUS, EKKEHARD