〈論文〉無誘導型電流センサの開発とスポット溶接電流の制御

概要

論文の詳細を見る
[Abstract] Weld reliability can be significantly improved by controlling spot welder current. Current control in a spot welder using an inverter power supply, however, first required the high-precision detection of welding current. Transformer-type and Hall effect-type current sensors are widely used in the industry, and high-precision designs are available commercially. They are unsuitable for the detection of inverter currents on the order of 10 kA, however. This paper discusses the development of an induction-free current sensor designed from the fundamental RI drop method. Concretely, the authors investigated methods of cancelling out the induction component of current detection resistance to develop an induction-free current sensor. The prototype sensor was tested on a frequency-controlled inverter power ]supply, and results indicate that it can be used for current control, as described in this paper.
近畿大学産業理工学部の論文
2009-07-00