2018
DOI: 10.1109/tpel.2017.2769165
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Nonisolated Harmonics-Boosted Resonant DC/DC Converter With High-Step-Up Gain

Abstract: High-step-up DC/DC converters are widely required in grid-connected applications with renewable energy sources. An extremely high-ratio step-up non-isolated DC/DC converter, in the form of a harmonics-boosted resonant converter, is proposed in this paper. This proposed converter consists of a high-frequency DC/AC inverter stage that is followed by a passive AC/DC rectifier stage connected in cascade. Conventionally, such a DC/AC inverter is designed to output a pure sinusoidal AC voltage with an amplitude seve… Show more

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Cited by 26 publications
(18 citation statements)
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“…7(a). The operating principle and the design considerations of this converter are described in [18], [19]. Only brief aspects of the design related to the RED application are summarised here.…”
Section: B High-gainmentioning
confidence: 99%
See 1 more Smart Citation
“…7(a). The operating principle and the design considerations of this converter are described in [18], [19]. Only brief aspects of the design related to the RED application are summarised here.…”
Section: B High-gainmentioning
confidence: 99%
“…However, to achieve a high voltage gain, a large number of capacitors and power switches are required, which greatly increase the cost of the converter [12], [15]. Apart from these topologies, one solution is to utilize a high-switching-frequency resonant inverter that is followed by a rectifier to achieve the high-voltage-gain DC/DC conversion [16]- [19]. The resonant nature of the converter makes it possible to achieve low switching loss despite a high switching frequency, which is beneficial for simultaneously attaining high efficiency and high power density [22].…”
Section: Introductionmentioning
confidence: 99%
“…3 This drawback can be mitigate by the employment of some techniques based on passive or active clamps 4,5 ; nevertheless, in these cases, the complexity and the cost increase, and the topology efficiency decreases. 6,7 On the other hand, the literature also presents solutions based on transformeless converters, which generally are simpler, less cost, less size, and higher efficient than the insulated ones. 6,8 Usually, to provide the dc-dc conversion of low-input voltage to high-output voltage, the traditional non-insulated dc-dc converters are associated with techniques applied to raise the gain, 9 such as coupled-inductors, 10,11 voltage multiplier (switched-inductor cell, 6,12 switchedcapacitor cell, 6,[12][13][14] elementary-lift cell, 9,15 and cascaded and stacked converters association [16][17][18] ).…”
Section: Introductionmentioning
confidence: 99%
“…A non-isolated high gain power converter is operated with low input voltage and obtains the high voltage conversion ratio [4] which is 19 times the input but converter uses the eight switches to achieve the high gain. A high step-up power converter combines the harmonics plus boost resonant inverter [5] with diodecapacitor rectifier circuit to obtain the high gain by compromising the efficiency. The major drawback of the converter is very sensitive to the load.…”
Section: Introductionmentioning
confidence: 99%