Control of a three-stage medium voltage solid-state transformer

C. BUSADA; H. CHIACCHIARINI; S. GÓMEZ JORGE; F. MENGATTO; A. OLIVA; J. SOLSONA; G. BLOCH; A. DELGADILLO

Advances in Science, Technology and Engineering Systems Journal (ASTESJ)

ASTES

Año: 2017 vol. 2 p. 119 - 129

2415-6698

This paper proposes the modeling and control of a Solid-State Transformer using a three-stage conversion topology. First, a rectification stage is used, where a three-phase high-voltage AC signal is converted to a DC level; this stage is then followed by a DC-DC converter, and finally an inverter is used to convert the DC into a three-phase low-voltage AC signal. The adopted topology is modeled using a simplified model for each stage, useful to design theircontrollers. Based on these models, the controllers are tuned to obtain a good performance to sudden load changes. This performance is tested through simulations.