Modelling of a high step up DC — DC converter based on Boost-flyback-switched capacitor

Choudhury, Tanmoy Roy; Dhara, Suvadip; Nayak, Byamakesh; Santra, Subhendu Bikash

doi:10.1109/calcon.2017.8280733

Cited by 5 publications

(4 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…High step-up power converters are some of the main devices used in photovoltaic applications [15][16][17][18][19] due to the low output voltage of solar panels. With such applications, efficiency is a key issue, so single-stage converters are preferred over more complex converters [17,18].…”

Section: Introductionmentioning

confidence: 99%

“…The system is difficult to use for analyses (eight differential equations and 16 topologies) and is less efficient than the converter presented in [17]. In a similar vein, a converter coupling several cells of flyback converters with switched capacitors was proposed in [16,21] Although this application considerably increases the voltage, the model is complex for the same reasons noted above, and its analysis and control design are difficult to use.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Slope Compensation Design for a Peak Current-Mode Controlled Boost-Flyback Converter

et al. 2018

View full text Add to dashboard Cite

Peak current-mode control is widely used in power converters and involves the use of an external compensation ramp to suppress undesired behaviors and to enhance the stability range of the Period-1 orbit. A boost converter uses an analytical expression to find a compensation ramp; however, other more complex converters do not use such an expression, and the corresponding compensation ramp must be computed using complex mechanisms. A boost-flyback converter is a power converter with coupled inductors. In addition to its high efficiency and high voltage gains, this converter reduces voltage stress acting on semiconductor devices and thus offers many benefits as a converter. This paper presents an analytical expression for computing the value of a compensation ramp for a peak current-mode controlled boost-flyback converter using its simplified model. Formula results are compared to analytical results based on a monodromy matrix with numerical results using bifurcations diagrams and with experimental results using a lab prototype of 100 W.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Slope Compensation Design for a Peak Current-Mode Controlled Boost-Flyback Converter

et al. 2018

View full text Add to dashboard Cite

show abstract

“…High step-up power converters are one of the main devices used in photovoltaic applications [1][2][3][4][5]. In such applications efficiency is vital, and for this reason, single-stage converters are preferable [3,4].…”

Section: Introductionmentioning

confidence: 99%

“…This converter is composed by four semiconductors and eight energy storage elements, which difficulties the analysis, and also reports lower efficiencies than the converter studied in [3]. In [2,7], it is proposed the coupling of one or several cells of flyback converters with switched capacitors. Although these applications considerably increase the voltages, the complexity of the model is high, due to the great number of semiconductors and energy storage elements.…”

Section: Introductionmentioning

confidence: 99%

Slope Compensation Design for a Peak Current-Mode Controlled Boost-Flyback Converter

Muñoz¹,

Gallo²,

Angulo³

et al. 2018

Preprint

View full text Add to dashboard Cite

Power converters with coupled inductors are very promising due to the high efficiency and high voltage gain. Apart from the aforementioned advantages, the boost-flyback converter reduces the voltage stress on the semiconductors. However, to obtain good performance with high voltage gains, the controller must include two control loops (current and voltage), and a compensation ramp. One of the most used control techniques for power converters is the peak current-mode control with compensation ramp. However, in the case of a boost-flyback converter there is no mathematical expression in the literature, to compute the slope of the compensation ramp. In this paper, a formula to compute the slope of the compensation ramp is proposed in such a way that a stable period-1 orbit is obtained. This formula is based on the values of the circuit parameters, such as inductances, capacitances, input voltage, switching frequency and includes some assumptions related to internal resistances, output voltages, and some other electrical properties related with the physical construction of the circuit. The formula is verified numerically using the saltation matrix and experimentally using a test circuit.

show abstract

A comprehensive review and feasibility study of DC–DC converters for different PV applications: ESS, future residential purpose, EV charging

Choudhury

Nayak

et al. 2019

Energy Syst

View full text Add to dashboard Cite

Modelling of a high step up DC — DC converter based on Boost-flyback-switched capacitor

Cited by 5 publications

References 25 publications

Slope Compensation Design for a Peak Current-Mode Controlled Boost-Flyback Converter

Slope Compensation Design for a Peak Current-Mode Controlled Boost-Flyback Converter

Slope Compensation Design for a Peak Current-Mode Controlled Boost-Flyback Converter

A comprehensive review and feasibility study of DC–DC converters for different PV applications: ESS, future residential purpose, EV charging

Contact Info

Product

Resources

About