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Synthesizing the switched-capacitor (SC) converter to perform certain voltage conversions is considered a challenge in SC converter design. This paper presents a systematic approach to synthesize an optimal SC converter for multiple voltage-gain-ratio (VCR) applications. The optimization methodology is based on the minimum number of components, i.e. capacitors and switches. This approach exploits...
The double-line-frequency (2ω) power ripple of single-phase quasi-Z-source (qZS) Photovoltaic (PV) inverter highly affects the whole system's design and performance. In this paper, a comprehensive modeling for single-phase qZS PV inverter is proposed, where the 2ω-ripple models of qZS inverter system served by real PV source are established and discussed on cases of with and without PV terminal capacitor...
Three-phase ac systems can be transferred into dq axis, where stability analysis becomes much simpler. In order to apply the stability criterion in AC system, an equivalent DQ admittance model for the ATRU system has been developed in this paper, based on the ABC impedance model in paper [1]. Compared to the literature work, this model has two better features: (1) it is valid in a wide frequency range,...
Three-phase ac systems can be transferred into dq axis, where stability analysis becomes much simpler. In order to apply the stability criterion in AC system, an equivalent DQ admittance model for the three-phase diode rectifier has been developed in this paper, based on the ABC impedance model in paper [1]. Compared to the literature work, this model has two better features: (1) it is valid in a...
The small signal model of an interleaved active clamp forward converter with parallel input and series-parallel output is presented in this paper. With interleaved control schemes for two phases in the proposed combined converter, the second side windings of the transformers can work in series when the input voltage is low while in parallel when input voltage is high. In order to predict the system...
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