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A PRACTICAL EVALUATION OF NON-LINEAR SNUBBERS USING MULTI-LAYER CERAMIC CAPACITORS
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| Author(s) |
Rex M. Davis; W. F. Ray; Ruth M. Jeffers |
| Abstract |
Multi-layer ceramic capacitors (MLC's) exhibit a reduction of capacitance as the voltage increases. When MLC's are used as RCD snubbers for GTO's or other semiconductor switching devices, the energy lost at snubber discharge can be reduced up to 10 times compared with linear capacitors. The paper provides experimental verification of the benefits of MLC snubbers for a fast GTO. The influence of increasing dV/dt on tail current is shown to be small. Experimental results at rated junction temperature reveal the sensitivity of tail current with temperature under enhanced dV/dt stress, but the tall current is only slightly increased compared with that using a linear snubber. |
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| Filesize: | 766.5 KB |
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| Type |
Members Only |
| Date |
Last modified 2021-02-23 by System |
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