Faculty Publications
Permanent URI for this communityhttps://idr.nitk.ac.in/handle/123456789/18736
Publications by NITK Faculty
Browse
2 results
Search Results
Item Performance study of high frequency link AC-AC converter(IEEE Computer Society, 2014) Ansal, V.; Parthiban, P.; Ravikumar, K.In this paper operation performance of an high-frequency (HF) link ac/ac converter is demonstrated using computer aided simulation package PSCAD/EMTDC. The converter consists of input filter, input matrix converter, HF transformer, and output matrix converter. The proposed configuration permits flexibility in the choice of voltage levels and frequency in the system without the penalty of bulky magnetic components. The proposed approach achieve high voltage transfer ratio, HF galvanic isolation of the input source from the output utility, higher power density by introducing a HF transformer in between the two stages of the converter. It is capable of having bidirectional power flow, achieve lower harmonic distortion on both input and output sides with proper filter design and controllable input displacement power factor. It also provides fast response, high efficiency, and free from acoustic noise. Comprehensive results are presented to assess the performance of the converter. Several features like voltage sag compensation, instantaneous voltage regulation, and power factor correction can be combined to this converter. This kind of converter laid the base for regulated ac power supplies and electronic transformers. © 2014 IEEE.Item Simulation study of a power electronic transformer based on matrix converter(IEEE Computer Society help@computer.org, 2015) Ansal, A.; Parthiban, P.A power electronic transformer (PET) is a direct AC/AC converter with a high frequency isolation. Various topologies of electronic PETs have been discussed in recent literatures. This paper is concentrated on the simulation study of an electronic transformer adopting matrix converter on either side of the high frequency isolation transformer. The industrial standard power system simulation package PSACD/EMTDC is used for the modeling of the PET. The PET described can convert a sinusoidal AC to a lower or higher voltage and/or to a lower or higher frequency without DC link. Both the steady state and transient performance of the converter are carried out to assess the performance. The simulation results of the converter shows that the PET accomplishes high frequency isolation, bidirectional power flow, two stage power conversion, higher power density, controllable input source displacement power factor, and lower harmonic distortion on both input and output sides. © 2014 IEEE.