High-voltage input and low-voltage output power supply for modular multi-level converter

Yun, Hyeok-Jin

doi:10.1109/itec-ap.2016.7512940

Cited by 6 publications

(3 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Assuming an ideal operation, in one commutation period, this area is equal to the average current delivered by a PV panel and defined by 𝐼 . Thus, ∆𝑄 is defined by Equation ( 18), and 𝐶 is defined by Equation (19), where ∆𝑉 is the PV panel voltage ripple desired: Assuming an ideal operation, in one commutation period, this area is equal to the average current delivered by a PV panel and defined by I PV DC . Thus, ∆Q is defined by Equation (18), and C in is defined by Equation (19), where ∆V PV is the PV panel voltage ripple desired:…”

Section: Input Capacitor Designmentioning

confidence: 99%

“…Regarding the application of DC-DC converters based on a single input and multiple outputs, different approaches can be found in the literature [17][18][19][20][21][22]. There are also approaches that use multiple winding transformers [23][24][25], although those with a single input and multiple outputs are the most frequent uses.…”

Section: Introductionmentioning

confidence: 99%

“…The aims could be to supply several cascade-connected H-bridges to generate a multilevel AC output [17,18], to connect the output in series to obtain a high DC voltage [19], or to supply independent loads with different voltage levels (depending on the number of turns of the secondary windings) [20][21][22].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A Modified Multi-Winding DC–DC Flyback Converter for Photovoltaic Applications

et al. 2021

View full text Add to dashboard Cite

DC–DC power converters have generated much interest, as they can be used in a wide range of applications. In micro-inverter applications, flyback topologies are a relevant research topic due to their efficiency and simplicity. On the other hand, solar photovoltaic (PV) systems are one of the fastest growing and most promising renewable energy sources in the world. A power electronic converter (either DC/DC or DC/AC) is needed to interface the PV array with the load/grid. In this paper, a modified interleaved-type step-up DC–DC flyback converter is presented for a PV application. The topology is based on a multi-winding flyback converter with N parallel connected inputs and a single output. Each input is supplied by an independent PV module, and a maximum power point tracking algorithm is implemented in each module to maximize solar energy harvesting. A single flyback transformer is used, and it manages only 1/N of the converter rated power, reducing the size of the magnetic core compared to other similar topologies. The design of the magnetic core is also presented in this work. Moreover, the proposed converter includes active snubber networks to increase the efficiency, consisting of a capacitor connected in series with a power switch, to protect the main switches from damaging dv/dt when returning part of the commutation energy back to the source. In this work, the operating principle of the topology is fully described on a mathematical basis, and an efficiency analysis is also included. The converter is simulated and experimentally validated with a 1 kW prototype considering three PV panels. The experimental results are in agreement with the simulations, verifying the feasibility of the proposal.

show abstract

Section: Input Capacitor Designmentioning

confidence: 99%