System and Method for Reinjection of Retard Energy in a Trolley-Based Electric Mining Haul Truck
AssigneeSiemens Industry, Inc.
InventorsJoy Mazumdar, Walter Köllner
Life of this patent
Estimating the term…
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.
Claims41
A method for reinjecting retard energy regenerated from an electrical motor on a vehicle, the method comprising the step of:
- transmitting via trolley lines at least a portion of the retard energy regenerated during at least one retard interval to a bidirectional electric substation.
A method for storing retard energy regenerated from an electrical motor on a vehicle, the method comprising the steps of:
- transmitting via trolley lines at least a portion of the retard energy regenerated during at least one retard interval to an auxiliary electrical energy storage system;
- and
- charging the auxiliary electrical energy storage system with at least a portion of the retard energy.
An electrical power system for reinjecting retard energy regenerated from an electrical motor on a vehicle, the electrical power system comprising an inverter configured to:
- receive at least a portion of the retard energy;
- and
- transmit via trolley lines at least a portion of the retard energy to a bidirectional substation.
An electrical power system for storing retard energy regenerated from an electrical motor on a vehicle, the electrical power system comprising:
- an inverter configured to:
- receive at least a portion of the retard energy;
- and
- transmit at least a portion of the retard energy to trolley lines;
- and
- an auxiliary electrical energy storage system configured to receive at least a portion of the retard energy from the trolley lines.
Dependencies are inferred from the claim text.