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1. (WO2017150726) CURRENT MEASUREMENT DEVICE AND INVERTER

Pub. No.:    WO/2017/150726    International Application No.:    PCT/JP2017/008605
Publication Date: Sat Sep 09 01:59:59 CEST 2017 International Filing Date: Sat Mar 04 00:59:59 CET 2017
IPC: G01R 19/00
G01R 35/00
H02M 7/48
Applicants: KYUSHU INSTITUTE OF TECHNOLOGY
国立大学法人九州工業大学
Inventors: OMURA, Ichiro
大村 一郎
TAKAHARA, Satoru
高原 賢
TABATA, Shoji
田畑 勝次
HASEGAWA, Kazunori
長谷川 一徳
TSUKUDA, Masanori
附田 正則
Title: CURRENT MEASUREMENT DEVICE AND INVERTER
Abstract:
Provided are a current measurement device and an inverter, capable of measuring output current, even when the output current from the inverter is a large current at low frequency. An inverter 10 has a third arm 13 connected in series from a first arm 11, which is connected in parallel between a ground line LL and a power supply line LH from a battery BT, which is a power supply. The third arm 13 has upper arms 111 to 131 and lower arms 112 to 132 connected in series from the first arm 11. A current measurement device 20 detects output current from the inverter 10. The current measurement device 20 is provided with: a pair of air core coils 21, 22 surrounding both wirings of a first wiring L1 between the power supply line LH and upper arms 111 to 131, and a second wiring L2 between the ground line LL and lower arms 112 to 132; and an integrating circuit 231 for integrating the output from the air core coils 21, 22.