Design of Snubber Circuit for Thyristors using Pspice
Nancy Merin Thomas

Nancy Merin Thomas, Department of Electrical and Electronics Engineering, PSG College of Technology, Coimbatore, India.
Manuscript received on March 11, 2013. | Revised Manuscript Received on March 12, 2013. | Manuscript published on March 25, 2013. | PP: 1-4 | Volume-1 Issue-5, March 2013. | Retrieval Number: E0198031513/2013©BEIESP
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Abstract: In normal cases switching a power electronic devices causes a sudden abrupt transients across the device which is undesirable for its perfect operation. So snubber circuits are necessary to maintain the safe function and long life of power switches. These circuits provide better efficiency and increase the possible switching speed and reduce the EMI. This paper deals with the designing of RC snubber circuit for thyristors. RC snubber circuits are normally connected across a switching device to limit the rate of rise of voltage (dv/dt). To analyse the performance of the circuit inductive load switching is simulated. Simulations are done in Pspice.
Keywords: EMI, Inductive load switching, snubber circuit.