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This paper presents a power converter configuration for the compound type hybrid excavator with an ultra capacitor, which is directly connected in parallel to dc-link capacitor without DC/DC converter. With this structure, the efficiency of the system has been improved compared to the conventional compound type hybrid excavator where an ultra capacitor was connected via DC/DC converter. And, a power...
This paper shows several structures of the hybrid excavator with the supercapacitor and compares them with each other from the aspect of fuel efficiency, the additional cost due to the hybridization, and the expected payback time. According to the comparison result, it can be concluded that a compound-type hybrid structure is a better solution than others because of its short expected payback time...
This paper shows several structures of the hybrid excavator with the super capacitor and compares with each other at the view point of the fuel economy, the additional cost due to the hybridization, and the expected payback time. According to the comparison result, it can be concluded that a compound type hybrid structure is better solution than others because of its short expected payback time and...
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