Abstract

This paper presents experimental results for a three-phase direct ac-ac converter based on switched capacitor principle in delta and wye configuration. This converter employs only capacitors and switches in the power stage, it has a fixed gain, it operates in open loop with constant duty cycle and constant switching frequency and the topology is bidirectional. One advantage of the proposed converter is a power stage with no magnetic elements, which makes the converter appropriated to build solid state autotransformers. A complete analysis of output voltages (phase-shift and amplitude) that are obtained regarding the delta and wye connections of converter is approached and it is corroborated with experimental results for resistive, inductive and nonlinear loads. A 220 V/110 V/3.5 kVA/100 kHz (in switching frequency) prototype was built and tested. For delta and wye connections of the modules, an efficiency of 90.4% and 95.05% was obtained in the rated load, respectively.

Talk to us

Join us for a 30 min session where you can share your feedback and ask us any queries you have

Schedule a call

Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.