An Adaptive Multistep Balancing Modulation Technique for Multipoint-Clamped Converters

Cervone, Andrea; Brando, G.; Dordevic, Obrad; Pizzo, A. Del; Meo, Santolo

doi:10.1109/tia.2019.2949980

Cited by 10 publications

(5 citation statements)

References 42 publications

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“…period S 1 , S 4 or S 2 , S 3 or performing in Fig. 2 is the equivalent circuit of the highfrequency power converter, and its equation is shown in (7):…”

Section: S T Dt  mentioning

confidence: 99%

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Design of High-Frequency ZVS Full-Bridge Power Converter for Photovoltaic Applications

Phetphimoon

Kongjeen

Bhumkittipich

2021

IREE

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This paper presents the design of a high-frequency Zero Voltage Switching (ZVS) fullbridge converter with a phase-shifted driving signal for photovoltaic applications. According to the rapid development of power electronics technology, the smart power converter could provide high-power capacity with the high-frequency operation and achieve high energy delivery to the load. This power converter could also reduce the size of the transformer compared to the same power rating. The transformer has been developed using resonant technique and selecting the optimal switching frequency whereby the power converter could reduce switching loss and improve the system efficiency. The phase-shifted modulation switching technique has been selected to drive the power semiconductor switches of a full-bridge power converter based on the switching loss minimization method. The desired output voltage has been controlled using a closed-loop controller under a loop gain stability margin. The simulation results have showed that the output voltage could be controlled to the desired constant when the input voltage has changed from 370 VDC to 400 VDC. The output voltage of the power converter could be controlled at a constant of 24 VDC. Therefore, the proposed study has showed the effectiveness of the phase-shifted ZVS fullbridge power converter for photovoltaic applications such as the battery charging system. This power converter could operate at the desired voltage system and reduce the sizing of the power converter under high-performance efficiency.

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“…period S 1 , S 4 or S 2 , S 3 or performing in Fig. 2 is the equivalent circuit of the highfrequency power converter, and its equation is shown in (7):…”

Section: S T Dt  mentioning

confidence: 99%

“…This is a new pulse-wide modulation technique for controlling the output voltage and the voltage balancing of the dc-bus capacitors of multi-stage clamp-on converters. Voltage equalization is achieved by allowing each converter's pin voltage to switch between multiple levels during a single modulation period [7], [8].…”

Section: Resonant Frequency Introductionmentioning

confidence: 99%

Design of High-Frequency ZVS Full-Bridge Power Converter for Photovoltaic Applications

Phetphimoon

Kongjeen

Bhumkittipich

2021

IREE

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“…In standard operating conditions the values of the capacitors must have a value similar voltage. In [52], a new PWM modulation strategy is proposed to control the output voltage and balance the DC bus capacitors for converters.…”

Section: Neutral Point Clamped Based Topologiesmentioning

confidence: 99%

Transformerless Multilevel Voltage-Source Inverter Topology Comparative Study for PV Systems

2020

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At present, renewable energies represent 25% of the global power generation capacity. The increase in clean energy facilities is mainly due to the high levels of pollution generated by the burning of fossil fuels to satisfy the growing electricity demand. The global capacity of generating electricity from solar energy has experienced a significant increase, reaching 505 GW in 2018. Today, multilevel inverters are used in PV systems to convert direct current into alternating current. However, the use of multilevel inverters in renewable energies applications presents different challenges; for example, grid-connected systems use a transformer to avoid the presence of leakage currents. The grid-connected systems must meet at least two international standards analyzed in this work: VDE 0126-1-1 and VDE-AR-N 4105, which establish a maximum leakage current of 300 mA and harmonic distortion maximum of 5%. Previously, DC/AC converters have been studied in different industrial applications. The state-of-the-art presented in the work is due to the growing need for a greater use of clean energy and the use of inverters as an interface between these technologies and the grid. Also, the paper presents a comparative analysis of the main multilevel inverter voltage-source topologies used in transformerless PV systems. In each scheme, the advantages and disadvantages are presented, as well as the main challenges. In addition, current trends in grid-connected systems using these schemes are discussed. Finally, a comparative table based on input voltage, switching frequency, output levels, control strategy used, efficiency, and leakage current is shown.

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“…While a few works in the literature have already proposed a control strategy involving the regulation of the difference of neighbor capacitor voltages (e.g., the work in [9]), the intended contribution of this letter is to reveal its inherent decoupling among control loops, its equivalence to the control proposed in [5], and to emphasize its superiority compared to other alternative options often applied in the literature.…”

Section: Introductionmentioning

confidence: 99%

Inherently Decoupled Dc-Link Capacitor Voltage Control of Multilevel Neutral-Point-Clamped Converters

Garcia-Rojas¹,

Busquets‐Monge²,

Griñó³

et al. 2023

Preprint

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<p>This letter derives and discusses the superiority of a simple dc-link capacitor voltage control configuration for multilevel neutral-point-clamped converters with any number of levels. The control involves <em>n</em>−2 control loops regulating the difference between the voltage of neighbor capacitors. These control loops are inherently decoupled; i.e., they are independent and the control action of one loop does not affect the others. The good performance of such control is confirmed through simulations and experiments. </p>

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An Adaptive Multistep Balancing Modulation Technique for Multipoint-Clamped Converters

Abstract: The version presented here may differ from the published version or from the version of the record. Please see the repository URL above for details on accessing the published version and note that access may require a subscription.

Cited by 10 publications

References 42 publications

Design of High-Frequency ZVS Full-Bridge Power Converter for Photovoltaic Applications

Design of High-Frequency ZVS Full-Bridge Power Converter for Photovoltaic Applications

Transformerless Multilevel Voltage-Source Inverter Topology Comparative Study for PV Systems

Inherently Decoupled Dc-Link Capacitor Voltage Control of Multilevel Neutral-Point-Clamped Converters

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