Comparison of multi-carrier and SHE-PWM for a nine levels cascaded H-bridge inverter

Mostafa, M.A.I.; Abdou, Ahmed; El-Gawad, Amal F. Abd; El-Kholy, E. E.

doi:10.1109/mepcon.2017.8301379

Cited by 5 publications

(3 citation statements)

References 25 publications

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“…In most cases, Sinusoidal Pulse Width Modulation (SPWM) is utilized as in [446]. The underlying carrier signals often have triangular waveforms but can also be saw-tooth-shaped [490]. The number of carrier signals in SPWM is normally equal to the number of inherent ESUs.…”

Section: Modulation Techniquesmentioning

confidence: 99%

Critical Review of Intelligent Battery Systems: Challenges, Implementation, and Potential for Electric Vehicles

et al. 2021

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This review provides an overview of new strategies to address the current challenges of automotive battery systems: Intelligent Battery Systems. They have the potential to make battery systems more performant and future-proof for coming generations of electric vehicles. The essential features of Intelligent Battery Systems are the accurate and robust determination of cell individual states and the ability to control the current of each cell by reconfiguration. They enable high-level functions like fault diagnostics, multi-objective balancing strategies, multilevel inverters, and hybrid energy storage systems. State of the art and recent advances in these topics are compiled and critically discussed in this article. A comprising, critical discussion of the implementation aspects of Intelligent Battery Systems complements the review. We touch on sensing, battery topologies and management, switching elements, communication architecture, and impact on the single-cell. This review contributes to transferring the best technologies from research to product development.

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Section: Modulation Techniquesmentioning

confidence: 99%

Critical Review of Intelligent Battery Systems: Challenges, Implementation, and Potential for Electric Vehicles

et al. 2021

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“…The first stage consists of an ac/dc rectifier with an HVDC link. It shapes the input current, provides bidirectional power flow along with reactive power compensation [73][74][75][76] and harmonic elimination [77][78][79]. The second stage consists of HFT to provide galvanic isolation, and the DAB converter is used to regulate the active power flow.…”

Section: Sst-based Xfc Stations Recent Developments and Topologiesmentioning

confidence: 99%

A state‐of‐the‐art review on topologies and control techniques of solid‐state transformers for electric vehicle extreme fast charging

Tahir

Khan

Rahman

et al. 2021

IET Power Electronics

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Electrical vehicle (EV) technology has gained popularity due to its higher efficiency, less maintenance, and lower dependence on fossil fuels. However, a longer charging time is a significant barrier to its complete adaptation. Solid state transformer (SST) based extreme fast charging schemes have emerged as an appealing idea with an ability to provide a refuelling capability analogous to that of gasoline vehicles. Therefore, this paper reviews the EV charger requirements, specifications, and design criteria for high power applications. At first, the key barriers of using a traditional low frequency transformer (LFT) are discussed, and potential solutions are suggested by replacing the conventional LFT with high frequency SST at extreme fast-charging (XFC) stations. Then, various SST-based converter topologies and their control for EV fast-charging stations are described. The reviewed control strategies are compared while considering several factors such as harmonics, voltage drop under varying loading conditions, dc offset load unbalances, overloads, and protection against system disturbances. Furthermore, the realization of SST for EV charging is comprehensively discussed, which facilitates understanding the current challenges, based on which potential solutions are also suggested.This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

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“…3. Three-Stage: Three-stage topology shown in Figure 6 utilizes HVDC as well as LVDC link, HVAC is supplied to the AC-DC rectifier stage, which offers various advantages including voltage regulation across HVDC link, bi-directional power flow, VAr compensation, [58] and harmonic filtering by achieving more sinusoidal wave shape [59][60][61]. In the second stage, DC is converted to high-frequency AC to be stepped down through a highfrequency transformer and be converted back to DC by utilizing the Double Active Bridge (DAB).…”

Section: Acmentioning

confidence: 99%

Solid-State Transformers: Fundamentals, Topologies, Applications, and Future Challenges

et al. 2021

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Solid-state transformers (SSTs) have emerged as a superior alternative to conventional transformers and are regarded as the building block of the future smart grid. They incorporate power electronics circuitry and high-frequency operation, which allows high controllability and enables bi-directional power flow, overcoming the limitations of conventional transformers. This paper presents a detailed analysis of the solid-state transformer, expounding the fundamentals, converter topologies, applications, and future challenges of the SST in a systematic manner. The paper discusses the necessity of improved replacement of the low-frequency transformers (LFTs) and presents the configuration of SST. It presents SST fundamentals in individual stages and explores its origin and evolution. The basic topologies, their specifications, and control strategies are also described. The applications of SST as a replacement of LFTs are discussed along with recent applications. The future challenges for real-time implementation of SSTs are explored, and research directions are proposed.

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Comparison of multi-carrier and SHE-PWM for a nine levels cascaded H-bridge inverter

Cited by 5 publications

References 25 publications

Critical Review of Intelligent Battery Systems: Challenges, Implementation, and Potential for Electric Vehicles

Critical Review of Intelligent Battery Systems: Challenges, Implementation, and Potential for Electric Vehicles

A state‐of‐the‐art review on topologies and control techniques of solid‐state transformers for electric vehicle extreme fast charging

Solid-State Transformers: Fundamentals, Topologies, Applications, and Future Challenges

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