An Energy-Based Analysis for High Voltage Low Power Flyback Converter Feeding Capacitive Load

Ravi, Vaishnavi; Satpathy, Subhransu; Lakshminarasamma, N

doi:10.1109/tpel.2019.2915565

Cited by 9 publications

(8 citation statements)

References 36 publications

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“…The ripple voltage ΔVo can be expressed as: Since turns ratio N is equal to 1, L 1 = L m . In order to determine the magnetizing inductance L m , the maximum value can be selected between L 1 and L m , as illustrated in (8) and (15), respectively.…”

Section: Output Capacitor Comentioning

confidence: 99%

“…In addition, the proposed power system belongs to a low power level application. Therefore, a flyback or forward converter can be regarded as its discharger [12][13][14][15][16]. In [12,13], a flyback converter was adopted to balance each battery cell of a battery pack.…”

Section: Introductionmentioning

confidence: 99%

“…In [12,13], a flyback converter was adopted to balance each battery cell of a battery pack. Research reported in [14] and [15] presented a battery charger with a flyback converter. Due to simpler circuit topology, wider input voltage range, and lower cost, the flyback converter was selected as the battery discharger, as shown in Figure 3.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Zeta/Flyback Hybrid Converter for Solar Power Applications

Tseng

Fan

2022

Sustainability

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This paper presents a zeta/flyback hybrid converter with a PV array as its power source for an LED street light or digital signage application. When the PV array is used in a LED lighting system, it needs a battery charger and discharger. In order to increase the areas of application for different PV arrays, a zeta converter has been adopted as the battery charger. In addition, since a flyback converter has a simpler circuit, it is used as the battery discharger. Due to the leakage inductor of the transformer in the flyback converter, an active clamp circuit is used to recover the energy stored in leakage inductance. Zeta and flyback converters use switch integration techniques to form the proposed zeta/flyback hybrid converter. With this approach, the proposed system has less components, a lighter weight, a smaller size, and higher conversion efficiency. Finally, a prototype of the proposed hybrid converter with an output voltage of 12 V and output power of 50 W has been implemented to verify its feasibility. It is suitable for LED lighting system applications.

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Section: Output Capacitor Comentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Zeta/Flyback Hybrid Converter for Solar Power Applications

Tseng

Fan

2022

Sustainability

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“…Bidirectional flyback has attracted a lot of attention to drive low power HV capacitor charging /discharging applications, as it can be made very compact with a low number of components. Several works demonstrate reversible flyback up to a 2.5 kV voltage output [8], [9], [10]. No additional inductance to control the current in the capacitive loads is needed, as the flyback benefits from it natural current output of its coupled inductor.…”

Section: V 16kvmentioning

confidence: 99%

Ultrahigh-Voltage Switch for Bidirectional DC–DC Converter Driving Dielectric Elastomer Actuator

Pniak

Almanza

Civet

et al. 2020

IEEE Trans. Power Electron.

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Specific applications, such as dielectric elastomer actuators (DEAs) or electroactive polymers, require to switch voltage levels exceeding the ratings of existing semiconductor devices. In low power application, reversible flyback are widely used to supply DEAs. Lowering the parallel parasitic capacitance of the high-voltage switch is important to improve the energy transfer, while it becomes mandatory to increase the output voltage of flyback above 2.5 kV. In this paper, a Pulsed Transformer Gate Driver (PTGD) is used to drive seriesconnected MOSFET and therefore push the limits from 4.5 kV up to 16 kV. At these high voltage levels, the structure reveals a drastic voltage unbalance related to the transformer interwinding parasitic capacitance. The compensation method proposed to achieve voltage balance only adds few passive components and reduces significantly the additional parallel capacitance of the switch compared to common load side voltage balancing methods. Finally and as proof of concept, a halfbridge bidirectional converter was designed from this switch technology and drove an actual dielectric elastomer actuator at 16 kV.

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“…Halfbridge bidirectional converters [6] and bidirectional flyback [7], both based on a 4.5 kV stacked MOSFETs, have been demonstrated up to 16 kV and 7.5 kV respectively. However, in case of low-power devices, the inductance, and switches parasitic capacitance losses are drastically reducing the overall efficiency, down to about 15% [8], [9], [6]. Besides, the design of the inductors [8], [7], [6] mostly lead to a bulky element with a volume up to 20 times the one of the DEA.…”

Section: Introductionmentioning

confidence: 99%

Adaptation of a Solid-State Marx Modulator for Electroactive Polymer

Almanza

Martinez

Petit

et al. 2022

IEEE Trans. Power Electron.

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Electroactive polymers show promising characteristic such as lightness, compactness, flexibility and large displacements making them a candidate for application in cardiac assist devices. This revives the need for quasi-square wave voltage supply switching between 0 and several kilo-Volts, that must be efficient, to limit the heat dissipation, and compact in order to be implanted. The high access resistance, associated to compliant electrodes, represents an additional difficulty. Here, a solid-state Marx modulator is adapted to cope with electroactive polymer characteristics, taking advantage of an efficient energy transfer over a sequential multistep charge/discharge process. To ensure compactness, efficiency as well as the needs of an implanted device, a wireless magnetic field based communication, and power transfer system has been implemented. This work demonstrates the benefit of this design through simulations, and experimental validation on a cardiac assist device. At a voltage of 7 kV, an efficiency of up to 88% has been achieved over a complete charge/discharge cycle.

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An Energy-Based Analysis for High Voltage Low Power Flyback Converter Feeding Capacitive Load

Cited by 9 publications

References 36 publications

Zeta/Flyback Hybrid Converter for Solar Power Applications

Zeta/Flyback Hybrid Converter for Solar Power Applications

Ultrahigh-Voltage Switch for Bidirectional DC–DC Converter Driving Dielectric Elastomer Actuator

Adaptation of a Solid-State Marx Modulator for Electroactive Polymer

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