Impact Factor (2025): 6.9
DOI Prefix: 10.47001/IRJIET
Single
phase solid state transformer (SST) has received great attention among
researchers and engineers as an effort to replace the standard 50/60Hz low
frequency (LF) transformer in certain applications where bulky and heavy low
frequency transformer become prohibitive. The main challenge in SST research is
how to achieve comparable efficiency and high reliability of the traditional LF
transformer. The heavy and bulky low frequency (LF) transformer single phase
(50/60 Hz) has long been a proven technology as a solution for providing power
delivery in wide range of power rating and voltage rating. However, in
applications where the physical dimension of transformer is a limiting factor
for its utilization such as in aerospace application, solid state transformer
(SST) becoming an interesting alternative to the LF transformer. To
significantly miniaturize the physical dimension of the transformer, SST
operates at high switching frequency by utilizing power transistor to convert
the low frequency power into high frequency power which can be efficiently
transferred with much smaller transformer. Based on that target, a single stage
single phase SST was developed with separate high frequency converter link
(HF-Link) and low frequency commutation bridge (LF-Bridge). The HF-Link was
realized using full bridge converter. In this project, our experience in
developing single phase SST will be presented along with the lesson learned
during the development. A converter structure based on separate high frequency
converter link and Low Frequency Commutation Bridge was studied, tested, and
analyzed. From the experimental measurement, the prototype converter was able
to provide clean sine wave power to the load with conversion at the 1kW maximum
load.
Country : India
IRJIET, Volume 6, Issue 6, June 2022 pp. 268-273