The combined asymmetric half-bridge power converter topology is often used to drive switched reluctance machines (SRMs). This letter describes a transformer-isolated power semiconductor gate driver circuit that uses only two transformers to supply all three power devices in a combined asymmetric half bridge with local power supplies and drive signals. Therefore, the entire gate driver circuitry for a six-switch converter driving a four-phase SRM requires only four isolation transformers, thereby reducing cost. Operation of a prototype circuit is demonstrated.
|Translated title of the contribution||Power Device Gate Driver Circuit With Reduced Number of Isolation Transformers for Switched Reluctance Machine Drive|
|Pages (from-to)||548 - 552|
|Number of pages||5|
|Journal||IEEE Transactions on Power Electronics|
|Publication status||Published - Feb 2009|