A simple regenerative snubber structure is proposed, which is applicable to multi-level inverters with series-connected GTOs(Gate Turn-Off Thyristor) for high power applications. The novel snubber structure can solve large energy loss problems and guarantee safe operations of power devices. A compact constructions of power converter can be achieved. The proposed new snubber has the potential of high performance and high reliability and is particularly suitable to high power and multi-level applications with series connected power devices.
