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Analysis of Joule-heat Characteristics according to the DC-link Capacitor Film Geometrics  

Jeon, Yong Won (Department of Mechanics Engineering, Kongju National University)
Kim, Young Shin (Industrial Technology Research Institute, Kongju National University)
Jeon, Euy Sik (Department of Mechanical & Automotive Engineering, Kongju National University)
Publication Information
Journal of the Semiconductor & Display Technology / v.19, no.1, 2020 , pp. 42-48 More about this Journal
Abstract
As global warming accelerates, eco-friendly electric cars are being developed to reduce carbon dioxide emissions, and power conversion inverters are used to drive motors. Among inverter components, DC-link capacitor is heated by high current usage, which causes problems such as performance and life-saving of inverter. Although metal cases with good thermal performance have been used to solve this problem, it is difficult to apply them in practice due to insulation problems with other parts. In this paper, the Heat-Generation influence factor of DC-link capacitor is analyzed. Variables on heat-generation are set at 3 levels for film width, inductance, and film thickness. Box-Behnken to 13 tests using the design and minimal deviations, e.g. through the experiment three times by each level. The surface of the film k type by attaching the sensor current is measured temperature. Capacitance was set to a minimum level of 200 ㎌ and had a frequency of 16 kHz with Worst case, ambient temperature of 85℃ and a ripple current of 50 Ams was applied. The temperature at the measurement point was collected in the data logger after sampling at 1 minute intervals for 2 hours after saturation with the ambient temperature. This experiment confirmed that setup factors are correlated with heat-generation.
Keywords
DC-link Capacitor; ESR; Stray Inductance; Joule-Heat; Film width;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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