A Study on Separation of Heat Generation and Heat Transfer Related to Temperature Rise of Silver Palladium Contact(Contact Phenomena,<Special Section>Recent Development of Electromechanical Devices (Selected Papers from IS-EMD2005))

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In this paper, the separation of heat generation and heat transfer related to temperature rise of silver palladium contact was investigated experimentally in order to predict the temperature rise of contact by the use conditions such as voltage range between 25 to 40V, current range between 3.2 to 5.0A and silver palladium alloy (AgPd) materials. Firstly, relationship between temperature rise of contact and supply power was discussed. The effects of heat generation and heat transfer on temperature rise were separated and quantified by least squares method. Secondly, effects of durations and integral powers of bridge and arc on temperature rise were also discussed by changing supply power. Results show that the integral power of the bridge increases when supply power increases. As the supply power increases, integral power of arc also increases. The temperature rise is dominated by integral power of bridge. Remarkable difference of bridge duration can not be seen in the five materials (AgPd_<30>, AgPd_<40>, AgPd_<50>, AgPd_<70> and Pd). The supply power is increased, arc duration gets longer. As weight percent of Pd content increases, the effect of supply power on arc duration becomes larger. Consequently, the integral power of arc increases. This study is a basic consideration to realize methods predicting temperature rise of contact.
社団法人電子情報通信学会の論文
2006-08-01