Two Switch Buck Boost converter for Power Factor correction

Chandran, C. Pranav; Chandran, Lekshmi R.

doi:10.1109/tapenergy.2015.7229662

Cited by 9 publications

(5 citation statements)

References 11 publications

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“…Additionally, if the reference for the inductor current is derived from the rectified mains voltage, the current injected by the dual buck-boost converter will have a sinusoidal shape in phase with the mains voltage, thus optimizing the energy transfer and the power factor of the system [12].…”

Section: Transfer Of Energy To the Gridmentioning

confidence: 99%

Control Strategy for Power Generation from a Capacitive Mixing Cell and Grid Injection

Nkembi¹,

Pernia²,

Prieto³

et al. 2023

RE&PQJ

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In this work, the possibility of extracting energy from a capacitive mixing cell based on the potential that exists as a result of the salinity gradient between fresh and salt water passing through the electrodes of a deionization cell is studied. For this, a two-stage process is defined. The first step uses a dual buckboost converter for the positive and negative cycles of the input voltage. This topology acts as a current source and is chosen due to its ability to provide high power factor and to work with extremely low voltage levels. The second stage consists of an Hbridge inverter synchronized with the AC grid to feed power into the grid. A hysteresis control system has been designed for the current flowing through the coil. With this, it has been analyzed how the efficiency of the total system (cell + power converter) varies with the changes in the series resistance of the CapMix cell or with the discharge current selected in the power converter. Simulations are carried out to characterize the energy extraction and some experimental results confirm the possibility of using this new renewable energy source.

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Section: Transfer Of Energy To the Gridmentioning

confidence: 99%

Control Strategy for Power Generation from a Capacitive Mixing Cell and Grid Injection

Nkembi¹,

Pernia²,

Prieto³

et al. 2023

RE&PQJ

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show abstract

“…Such parallelization of the converters enables the modularity of the system and reduces the injection of harmonics if the modules are conveniently interleaved (see Figure 9), without penalizing the performance of the overall system. In Figure 9, we can see the result output by four converters in parallel operation, injecting current with shifted phase to increase the total current injected into the battery [40][41][42][43]. This will also reduce the high peaks in the current flowing into the battery, thus contributing to the lower degradation of the battery lifespan.…”

Section: Energy Transferring Processmentioning

confidence: 99%

“…If instead of using a battery we aim to transfer the energy from the bridgeless dual buck-boost converter into the AC grid, we need to connect a grid-synchronized inverter in between [39,40].…”

Section: Energy Transferring Processmentioning

confidence: 99%

“…Such synchronization requires that zero crossings of the grid voltage be monitored. In Figure 9, we can see the result output by four converters in parallel operation, injecting current with shifted phase to increase the total current injected into the battery [40][41][42][43]. This will also reduce the high peaks in the current flowing into the battery, thus contributing to the lower degradation of the battery lifespan.…”

Section: Sine Generatormentioning

confidence: 99%

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Current Source Strategy for Energy Injection from a CapMix Cell

Busto,

Prieto,

Martín-Ramos

et al. 2023

Electronics

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Circulation of salty and fresh water through the electrodes of a deionization cell produces a voltage between the electrodes caused by the Capacitive Donnan Potential (CDP). The voltage so generated is very low (100 mV), but this work demonstrates that it is possible to develop a power converter suitable to inject this energy into the grid or into energy storage systems; this is a relevant aspect of this paper, for most works in the literature simply dissipate this energy over a resistor. To increase the input voltage, a stack of electrodes is connected in series. A bridgeless rectifier that uses a dual buck–boost converter to operate with both the positive and negative cycles is used to extract the energy from the cell. The topology chosen, which is operated as a current source, can work at extremely low voltage levels and provide power factor correction. After this stage, an H-bridge inverter can be included to inject the energy into the AC grid. The whole system implements a hysteresis control system using the current through the inductor of the power converter as control variable. This paper investigates the influence of such current on the efficiency of the total system.

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“…Furthermore, this paper proposes a fair comparison with two other well-known classical buck-boost converters: the SEPIC [ 27 , 28 , 29 , 30 ] and the noninverting buck-boost converter, refs. [ 31 , 32 ] to demonstrate that the proposed versatile converter has a superior efficiency performance in the PFC applications.…”

Section: Introductionmentioning

confidence: 99%

DC Voltage Sensorless Predictive Control of a High-Efficiency PFC Single-Phase Rectifier Based on the Versatile Buck-Boost Converter

González-Castaño

Restrepo

Sanz

et al. 2021

Sensors

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Many electronic power distribution systems have strong needs for highly efficient AC-DC conversion that can be satisfied by using a buck-boost converter at the core of the power factor correction (PFC) stage. These converters can regulate the input voltage in a wide range with reduced efforts compared to other solutions. As a result, buck-boost converters could potentially improve the efficiency in applications requiring DC voltages lower than the peak grid voltage. This paper compares SEPIC, noninverting, and versatile buck-boost converters as PFC single-phase rectifiers. The converters are designed for an output voltage of 200 V and an rms input voltage of 220 V at 3.2 kW. The PFC uses an inner discrete-time predictive current control loop with an output voltage regulator based on a sensorless strategy. A PLECS thermal simulation is performed to obtain the power conversion efficiency results for the buck-boost converters considered. Thermal simulations show that the versatile buck-boost (VBB) converter, currently unexplored for this application, can provide higher power conversion efficiency than SEPIC and non-inverting buck-boost converters. Finally, a hardware-in-the-loop (HIL) real-time simulation for the VBB converter is performed using a PLECS RT Box 1 device. At the same time, the proposed controller is built and then flashed to a low-cost digital signal controller (DSC), which corresponds to the Texas Instruments LAUNCHXL-F28069M evaluation board. The HIL real-time results verify the correctness of the theoretical analysis and the effectiveness of the proposed architecture to operate with high power conversion efficiency and to regulate the DC output voltage without sensing it while the sinusoidal input current is perfectly in-phase with the grid voltage.

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Two Switch Buck Boost converter for Power Factor correction

Cited by 9 publications

References 11 publications

Control Strategy for Power Generation from a Capacitive Mixing Cell and Grid Injection

Control Strategy for Power Generation from a Capacitive Mixing Cell and Grid Injection

Current Source Strategy for Energy Injection from a CapMix Cell

DC Voltage Sensorless Predictive Control of a High-Efficiency PFC Single-Phase Rectifier Based on the Versatile Buck-Boost Converter

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