Break arc duration and contact erosion in automotive application

Jemaa, N. Ben; Nedelec, L.; Benhenda, S.

doi:10.1109/95.486566

Cited by 36 publications

(12 citation statements)

References 7 publications

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“…The testing device has already been described in a previous publication [5]. This completely automatic device is designed to break the contacts under similar conditions to those encountered in automobile relays and contactors.…”

Section: A Testing Equipmentmentioning

confidence: 99%

Contacts materials performances under break arc in automotive applications

Morin

Jemaa

Jeannot³

et al. 2000

IEEE Trans. Comp. Packag. Technol.

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New materials for electrical contacts have been developed recently, based on AgFeOx, AgFeRe, AgZnO, and doped AgSnO 2 . The work described here aims at evaluating the material transfer characteristics, and the contact resistance behavior, of these materials under break arc in automotive applications (14 V dc, 30-40 A). A comparison is made between these new materials and four reference materials: Ag, AgCdO, AgSnO 2 , and AgNi.Four of the new materials appear very promising: AgZnO, AgFeOx, doped AgSnO 2 io 6, and EMB8. These combine the good transfer performance of AgCdO in inductive load, i.e., in long cathodic arc, with that of AgSnO 2 in resistive load, i.e., in short anodic arc. For all materials, contact resistance is much higher in inductive load (7 m) than in resistive load (1 m). An explanation of the different behaviors of these materials is attempted by means of metallographic analysis.

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Section: A Testing Equipmentmentioning

confidence: 99%

Contacts materials performances under break arc in automotive applications

Morin

Jemaa

Jeannot³

et al. 2000

IEEE Trans. Comp. Packag. Technol.

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“…For MEMS switches, this represents an effective reduction in bandwidth. For large scale EM actuated switches, however, such a phenomenon may cause arcing and sparking due to the sudden change in back emf [1,3,6]. In addition, once the switch is released from the contact position, significant residual vibration occurs before it settles back to its original position.…”

Section: Command Shaping Schemementioning

confidence: 99%

“…Both electromagnetically (EM) and electrostatically (ES) actuated contact switches and relays have been widely used in macro scale mechatronics [1][2][3][4][5][6] and micro electromechanical systems (MEMS) [7][8][9][10][11][12][13] for various applications ranging from power delivery, signal transmission, and communications for decades. Because of their mechanical nature, switches generally have a limited lifetime and are prone to failure [14].…”

Section: Introductionmentioning

confidence: 99%

A command shaping approach to enhance the dynamic performance and longevity of contact switches

Chen

Yang

et al. 2009

Mechatronics

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“…The experimental apparatus is a fully automated device which has been widely described in previous papers [1,2].…”

Section: A Test Equipment and Proceduresmentioning

confidence: 99%

Theoretical and experimental determination of erosion rate due to arcing in electrical contacts

Abbaoui

Lefort

Sallais³

et al. 2006

Electrical Contacts - 2006. Proceedings of the 52nd IEEE Holm Conference on Electrical Contacts

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Erosion rate of electrical contacts is a very important parameter to understanding and evaluating the performances of contact materials and switching devices such as the life time. The most common measurement of arc erosion is the mass change of the contacts, determined by the weighing of the anode and the cathode, before and after the electrical tests. The erosion is well known to be a transfer from the anode to the cathode then from the cathode to the anode and finally a bilateral loss takes place. In this work, and to avoid the transfer phenomena, the mass of electrode after a large number of breaking operations is performed in the domain of bilateral erosion of the anode and cathode. Calculation of the evaporated mass by finite element simulation of thermal input and heat transfer to the electrode from the arc is made. It is found that the evaporated amount per unit of duration arc is in agreement for silver materials but for metal oxide it needs the knowledge of material properties and namely data of physical heat conduction.

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Break arc duration and contact erosion in automotive application

Cited by 36 publications

References 7 publications

Contacts materials performances under break arc in automotive applications

Contacts materials performances under break arc in automotive applications

A command shaping approach to enhance the dynamic performance and longevity of contact switches

Theoretical and experimental determination of erosion rate due to arcing in electrical contacts

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