Novel Partial Discharge Location Algorithm for Next Generation Power Module using Small Loop Sensors

Conference: CIPS 2018 - 10th International Conference on Integrated Power Electronics Systems
03/20/2018 - 03/22/2018 at Stuttgart, Deutschland

Proceedings: ETG-Fb. 156: CIPS 2018

Pages: 6Language: englishTyp: PDF

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Maki, Jyunya; Akinaga, Yuya; Kozako, Masahiro; Hikita, Masayuki (Kyushu Institute of Technology, 1-1 Sensuityou, Tobata, Kyushu, Fukuoka, 804-8550, JAPAN)
Nakamura, Yoko; Taniguchi, Katsumi; Ikeda, Yoshinari; Okamoto, Kenji (Fuji Electric Co.,Ltd., Japan)

Partial discharge (PD) is one of key issues in high-voltage power module. Identifying a PD location in a power module provides information on its adequate insulation design. In this paper, an attempt is made to identify PD location in a full mold power module by measuring electromagnetic wave (EMW) detected by multiple loop sensors. A novel technique for identification of PD source is proposed by utilizing the polarity reversal of the first rising part of detected EMW signals. As a result, it is found that the method utilizing the polarity reversal of EM waveform allows PD location with a highest accuracy with uncertainty ranging 1 to 4 mm.