Abstract
In this paper, a new modified structure of a DC/DC T-source converter is proposed. Since the proposed converter provides high voltage gain, it is suitable for photovoltaic integration into uninterruptible power supply (UPS) systems. The proposed structure employs partial power processing technique to increase the output voltage as well as efficiency without requiring new hardware. Partial power converters (PPCs) process only a fraction of flowing power while the remaining power directly flows through output. This generally causes an improvement in efficiency and output voltage. A total of two structures are presented: conventional partial power T-source converters and improved partial power T-source converters. The key advantage of the improved partial power converter is a higher voltage gain. Furthermore, it reduces the voltage and the current stresses on switches and diodes. The steady-state operation principles are described for both converters and the governed rules and equations are derived. The PPCs and full power converter are compared in terms of efficiency, voltage gain, voltage stress, and current stress of converter elements. The converter performance is evaluated through experimental and simulation studies. The presented results show good consistency with the theoretical analysis.
Highlights
Uninterruptible power supply (UPS) systems have been extensively used in the infrastructure of data centers, communication networks, and IT servers [1,2]
Using the partial power processing technique for non-isolated converters was investigated [23,24,25,26,27,28]. This technique is applied to an isolated T-source DC/DC converter to improve the converter vapopltlaigcVaetinigoanisn,.inAclutodtianlgIomUf PtpwSeosdnyaessntttrewcumecostsru.korIunesrScoeecfttihonis converter are proposed and 2, the proposed structures are compared for presented and possible the main relations for steady-state operation of the converter are derived
This technique is applied to isolated T-Source DC-DC converter to improve the 95 converter voltage gain
Summary
Uninterruptible power supply (UPS) systems have been extensively used in the infrastructure of data centers, communication networks, and IT servers [1,2]. Using the partial power processing technique for non-isolated converters was investigated [23,24,25,26,27,28] In this paper, this technique is applied to an isolated T-source DC/DC converter to improve the converter vapopltlaigcVaetinigoanisn,.inAclutodtianlgIomUf PtpwSeosdnyaessntttrewcumecostsru.korIunesrScoeecfttihonis converter are proposed and 2, the proposed structures are compared for presented and possible the main relations for steady-state operation of the converter are derived. In this paper, this technique is applied to isolated T-Source DC-DC converter to improve the 95 converter voltage gain. This technique is applied to isolated T-Source DC-DC converter to improve the 95 converter voltage gain Two structures of this converter are proposed and compared for possible
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