Abstract
Silicon-controlled rectifiers are now available with a voltage rating upto 10 kV and a current rating upto 1200 A. In many power control applications, the required voltage and current ratings are lower than these maximum limits. Therefore, even though it may be possible to obtain a single SCR of proper voltage and current ratings, on many occasions the designer is forced to use lower-rated SCRs for reasons of economy and availability. In such a situation, lower-rated SCRs hive to be connected in series and parallel combinations to suit the voltage and current requirements of the circuit for a particular application. Series and parallel coinbinations are also often used when it is required to control power in low-voltage high-current circuits or high-voltage low-current circuits because an SCR of suitable voltage and current ratings may not be available.
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References
Hey, J.C., Series operation of SCRs, Application Note 200.40, G.E. Company, Syracuse, USA.
Somos, I., Piccone, D. E., Behaviour of power semiconductor devices under transient condition, IEEE Conference Record (Industrial Static Power Conversion), 1965, p. 243.
Tobisch, G.T., Parallel operation of silicon rectifier diodes, Mollard Technical Communications (UK), No. 73, 1964.
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© 1977 Affiliated East-West Press Private Limited
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Ramamoorty, M. (1977). Multiple Connections of SCRs. In: An Introduction to Thyristors and Their Applications. Palgrave, London. https://doi.org/10.1007/978-1-349-04320-0_3
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DOI: https://doi.org/10.1007/978-1-349-04320-0_3
Publisher Name: Palgrave, London
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