Control design and frequency analysis of an output filter in parallel interleaved converters

Silva, J. L. Da; Reis, G. L. Dos; Seleme, Seleme Isaac; Meynard, Thierry

doi:10.1109/pecon.2016.7951656

Cited by 6 publications

(7 citation statements)

References 8 publications

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“…11(a) shows that the higher the number of cells the fastest the response, as the three-cell has the slower response and six-cell the fastest, although extremely close to the five-cell one. These results confirm the behavior showninFig.7,but the differences between the responses are not as significant as expected between ncell = 3 and ncell = [5,6]. In fact, the nonlinearities of the test bench, the variation of the FC voltages, and the limitations of the control platform make it hard to push the converter to its limits.…”

Section: B Experimentssupporting

confidence: 87%

“…It is employed a state-space feedback control (SSFC), which is simple and well established [30]. It is easy to develop the state-space model of the equivalent filter as (6) and the common voltage imposed by the combination of the voltage cells is where αcelli(t) is the instantaneous cell duty cycle of the ith cell and αCM is the mean common mode duty cycle. Equation (7) applies to ncell series-parallel converters, considering the input voltage constant and the FCs balanced, i.e., the cells capacitance are not taken into account in the model.…”

Section: A Control Strategymentioning

confidence: 99%

“…The control sampling time is a function of the apparent switching frequency fsa = ncell • fSw in order to take advantage of the cell's phase-shifted PWMs [6].…”

Section: A Control Strategymentioning

confidence: 99%

“…In this case, the voltage levels are the same whatever the number of cells, but with the proper phase shifted modulation between the cells, the perceived switching frequency in the output of the converter increases with the number of cells. Therefore, the filter requirements are also reduced, and higher bandwidths can be attained [6].…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Design Aspects for Achieving High Bandwidth Series and Parallel Multicell Converters

Mendes

Rezende

Ferreira

et al. 2022

IEEE Trans. Power Electron.

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Section: B Experimentssupporting

confidence: 87%

Section: A Control Strategymentioning

confidence: 99%

“…The control sampling time is a function of the apparent switching frequency fsa = ncell • fSw in order to take advantage of the cell's phase-shifted PWMs [6].…”

Section: A Control Strategymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Design Aspects for Achieving High Bandwidth Series and Parallel Multicell Converters

Mendes

Rezende

Ferreira

et al. 2022

IEEE Trans. Power Electron.

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“…This work uses two approaches to multiport converters with interleaved bidirectional dc/dc converters, which is interesting to reduce the input and output current ripple [12], [13]. In this work, three legs are used for each dc/dc converter.…”

Section: Power Electronics Structures For Bess Realizationmentioning

confidence: 99%

Power Control Strategy for Grid-Connected Inverters in Stationary Reference Frame

Xavier¹,

Cupertino²,

Pereira³

et al. 2022

Eletrônica de Potência

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The control of grid-connected converters in stationary reference frame has been investigated in several works of literature. One of the challenges of this method is in the computation of the current computing current references as a function of power references. In some works, this issue has been solved based on instantaneous power theory equations described in the stationary reference frame. However, this approach can lead to steady-state errors in the injected power if there is an error in the current control loop, which is the focus of this investigation. Firstly, analytical expressions are derived to investigate the effect of current loop steady-state error in the active and reactive power injected into the grid. Then, this paper proposes a closed-loop power control for gridconnected inverters controlled in the stationary reference frame. This strategy is experimentally investigated in two power conversion system configurations for battery energy storage systems. The results indicate that the proposed scheme guarantees zero steady-state error in the injected power even when the current loop presents an amplitude and phase steady-state error.

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Design and performance comparisons of power converters for battery energy storage systems

Xavier

Sousa

Pereira

et al. 2023

Circuit Theory & Apps

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Summary The use of grid‐connected battery energy storage systems (BESSs) has increased around the world. In the scenario of high penetration level of renewable energy sources in distributed generation, BESS plays an important role to combine a sustainable power supply with a reliable dispatched energy source. Different power converter topologies are employed to connect the batteries to the grid, generally using single‐stage converters. However, the battery voltage changes according to its state of charge, which can introduce great variations in the dc‐link voltage. Therefore, the dc/ac stage converter must have its power switches designed to support this voltage variation. A controllable dc‐link voltage is achieved by inserting a dc/dc converter stage to connect the batteries to the dc/ac stage. Among the dc/dc converters, the interleaved bidirectional converter has been widely used due to the low input current ripple. However, the trade‐off of the insertion of the dc/dc stage is barely explored in the literature. Therefore, this work presents a methodology of analysis, considering the battery voltage variation and its influence on BESS power conversion system design and efficiency. Furthermore, it is proposed a power conversion system design oriented toward the voltage class of power switches and efficiency. The analysis in this study are conducted through the use of a case study approach, incorporating both simulated and experimental results.

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Control design and frequency analysis of an output filter in parallel interleaved converters

Cited by 6 publications

References 8 publications

Design Aspects for Achieving High Bandwidth Series and Parallel Multicell Converters

Design Aspects for Achieving High Bandwidth Series and Parallel Multicell Converters

Power Control Strategy for Grid-Connected Inverters in Stationary Reference Frame

Design and performance comparisons of power converters for battery energy storage systems

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