Modeling and Control of a Medium Voltage Three-Phase Solid-State Transformer

BUSADA CLAUDIO; MENGATTO FAVIO; GOMEZ JORGE, SEBASTIÁN; BLOCH, G.; JORGE A. SOLSONA; CHIACCHIARINI HÉCTOR; OLIVA ALEJANDRO; DELGADILLO, A.

Cadiz

Congreso; IIIE CPE-POWERENG2017; 2017

IIIE

This paper proposes the modeling and control ofa Solid-State Transformer built using a three stage conversiontopology. First, a rectification stage is used, where a three-phasehigh-voltage AC signal is converted to a DC level; this stageis then followed by a DC-DC converter, and finally an inverteris used to convert the DC into a three-phase low-voltage ACsignal. The adopted topology is modeled by using a simplifiedmodel for each stage, useful to design their controllers. Basedon these models, the controllers are tuned to obtain a goodperformance to sudden load changes. This performance is testedthrough simulations