Multi-output differential power processing system using boost-flyback converter for voltage balancing

Park, Joung‐Hu; Kim, Kyoung-Tak

doi:10.1109/sigtelcom.2017.7849811

Cited by 15 publications

(5 citation statements)

References 7 publications

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“…Another option for PV-to-Bus voltage equalizer is the Flyback type, introduced in [25]. In Figure 19 a Boost-Flyback voltage equalizer is illustrated.…”

Section: B Flyback Voltage Equalizermentioning

confidence: 99%

A Comparative Analysis of Voltage Equalizers for Partial Shading Compensation in PV Arrays

Santos¹,

Donoso-Garcia²,

Júnior³

2019

Eletrônica de Potência

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Partial shading is a problem that affects solar systems not only in their efficiency, but also in its lifetime. As a solution, integrated converters enable mismatched modules to deliver their maximum power. Voltage Equalizers are a type of partial power processing integrated converters, which results in more efficiency. There are many types of voltage equalizers, divided in three different architectures and based in many topologies, i.e. buck-boost, flyback, switched capacitors and voltage multipliers. Thus, in this paper, a comparative analysis of these converters are made, considering reliability and working principle, which is explained through simulation results. At the conclusions are made, pointing which circuit may be the best choice for a voltage equalizer.

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“…Another option for PV-to-Bus voltage equalizer is the Flyback type, introduced in [25]. In Figure 19 a Boost-Flyback voltage equalizer is illustrated.…”

Section: B Flyback Voltage Equalizermentioning

confidence: 99%

A Comparative Analysis of Voltage Equalizers for Partial Shading Compensation in PV Arrays

Santos¹,

Donoso-Garcia²,

Júnior³

2019

Eletrônica de Potência

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“…Due to its higher efficiency, the boost–flyback converter might be also used in photovoltaic [13–16], dc–ac [17] and power factor correction applications [18–22].…”

Section: Introductionmentioning

confidence: 99%

Boost–flyback converter with interleaved input current and output voltage series connection

Brockveld

Waltrich

2018

IET Power Electronics

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This study proposed a high-gain dc-dc converter with an interleaved current at the input stage and voltage series connection at the output stage. This converter was designed based on the boost-flyback topology, which has as main characteristic high voltage gain. Normally, the boost-flyback is designed with the low input voltage, and therefore, the current at this stage reaches high current values, limiting the converter design. Therefore, paralleling the input connection allows the current division between the semiconductors, reducing the switching stress. As part of the converter analysis, in this study, the static and the dynamic converter model are obtained to further design the converter controllers. Furthermore, simulations and experimental results for the proposed converter, operating in closed-looping control, were designed for a peak power of 1.2 kW, reaching a maximum efficiency of 97.5%. Nomenclature S 1, 2, 3 control switch D B(1, 2, 3) boost output diode D F(1, 2, 3) flyback output diode C F(1, 2, 3) flyback output capacitor C B boost output capacitor L m(1, 2, 3) magnetising inductor of coupled inductors V Lm(1, 2, 3) magnetising inductance voltage I 1, 2, 3 magnetising inductance current in the primary I 4, 5, 6 magnetising inductance current in the secondary IET Power Electron.

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“…In a BF, boost and flyback converters are integrated via magnetic coupling between two inductors to form a BF converter to achieve a good trade-off between voltage gains, efficiency and complexity. Due to its high voltage gains, high efficiency and limited complexity relative to similar models, the boost-flyback converter is widely used in various applications such as in hybrid electric vehicles [24,25], for voltage balancing [26], in low-scale arrays of photovoltaic panels [27], in LED lighting [28,29] and for power factor correction [29]. A boost-flyback converter includes two capacitors, two coupled inductors, two diodes and one MOSFET such that the designer may use four differential equations and eight potential topologies.…”

Section: Introductionmentioning

confidence: 99%

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

et al. 2018

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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.

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Multi-output differential power processing system using boost-flyback converter for voltage balancing

Cited by 15 publications

References 7 publications

A Comparative Analysis of Voltage Equalizers for Partial Shading Compensation in PV Arrays

A Comparative Analysis of Voltage Equalizers for Partial Shading Compensation in PV Arrays

Boost–flyback converter with interleaved input current and output voltage series connection

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

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