Transformer Rectifier Units (TRUs) are a reliable way for DC generation in several electric applications. These units are formed by multiple three-phase uncontrolled bridge rectifiers connected according to two main topologies (parallel and series), and fed by a phase-shifting transformer, which can have different configurations. Fault diagnosis of the uncontrolled bridge rectifier diodes is one of the most important concerns on the electronic devices, nonetheless, rectifier units are inherently...
Saura, J.; Bakkar, M.; Bogarra, S. Open-circuit fault diagnosis and maintenance in multi-pulse parallel and series TRU topologies. "IEEE transactions on power electronics", 27 Febrer 2020, vol. 35, núm. 10, p. 10906-10916.