The Undeland snubber with a simple energy recovery circuit combines both the simplicity of the conventional snubber while reducing the switching stresses in the switches and improving the overall efficiency of the power circuit. Experiments are conducted on a single-phase 1 kVA Mosfet inverter with GaAs anti-parallel diodes and operating from a DC bus of 135 V. The results are presented for operations in the hard-switched mode as well as with the regenerative Undeland snubber in operation. It is shown that the Undeland snubber improves efficiency as compared to the hard-switched mode of operation. Practical limitations and design considerations of the Undeland snubber in the presence of improved devices such as low-reverse recovery current diodes like GaAs diodes are also shown.
|Number of pages
|Published - 1996
|Proceedings of the 1996 International Conference on Power Electronics, Drives & Energy Systems for Industrial Growth, PEDES'96. Part 1 (of 2) - New Delhi, India
Duration: Jan 8 1996 → Jan 11 1996
|Proceedings of the 1996 International Conference on Power Electronics, Drives & Energy Systems for Industrial Growth, PEDES'96. Part 1 (of 2)
|New Delhi, India
|1/8/96 → 1/11/96