Summary
In AC power-control applications, a triac must switch from the conducting state to the blocking state twice each cycle, at each zero-current point. This action is called commutation. Because of the charges stored in the triac during conduction, at high voltage-rising rates (dv/dt), the triac may fail to block the circuit voltage following the zero-current point. In such a case the control of the load power is lost, although the triac itself is not damaged in any way.
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© 1976 Springer-Verlag New York Inc.
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Blicher, A. (1976). Commutation of triacs. In: Thyristor Physics. Applied Physics and Engineering, vol 12. Springer, New York, NY. https://doi.org/10.1007/978-1-4612-9877-9_12
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DOI: https://doi.org/10.1007/978-1-4612-9877-9_12
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