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http://dx.doi.org/10.5762/KAIS.2016.17.10.86

A Study on Energy Efficiency Improvement of LDC Recycling Load Tester  

Lee, Choon-il (Department of Electronics Engineering, Incheon National University)
Hong, Yeon-Chan (Department of Electronics Engineering, Incheon National University)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.17, no.10, 2016 , pp. 86-92 More about this Journal
Abstract
A high-capacity battery installed in a hybrid vehicle or electric vehicle is used to power, or as a power supply for, electric sub-assemblies. In order to use a high-capacity battery as a power supply for electric sub-assemblies, such as an electronic control unit or for lighting, radio, and navigation, there is a need for a DC converter that changes a high voltage of 240-400V to a low voltage of 12-14V, which is done with a low-voltage DC-DC converter (LDC). An LDC undergoes long-term aging so as to reduce latent defects in the production process. With regard to the usual aging method, an LDC is a DC-DC converter. So, a DC power supply is connected and used as input, and a programmable DC electronic load is the output. For stable operation, a product having a larger capacity by 10% (compared to an LDC) is used, and has a structure where electric power is dissipated into 100% heat. So, there is a problem with volume, based on the use of two pieces of equipment to test the LDC, and another problem based on the generation of heat in the programmable DC electronic load. Hence, this paper suggests a load test method as a way of recycling, where a significant portion of the electricity dissipated as heat in a load tester is returned as input. The method realizes savings of 80% or more in the electricity dissipated as heat through improvement in the efficiency of the recycling load tester.
Keywords
Dynamic test; Electric vehicle; Energy consumption; LDC; Recycling load test;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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