Symmetrical Hybrid Multilevel Inverters for Ship Electric Propulsion Drives

Long, Wenfeng; Liu, Nianzhou; Wang, Kui; Zheng, Zedong

doi:10.1109/ifeec47410.2019.9015090

Cited by 9 publications

(3 citation statements)

References 24 publications

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“…The modular MLI was proposed as the most suitable topology for complying with the shipboard requirements. A family of symmetrical hybrid MLI for a five-phase induction motor-based propulsion system is presented in [53], where each phase in the inverter topology consists of a multilevel DC/DC converter operating at high frequency and an H-bridge cell operating at fundamental frequency. The obtained results of the neutral point voltage balancing method based on a modified phase-shifted PWM modulation strategy confirmed the effectiveness of the proposed system.…”

Section: In Electric Shipsmentioning

confidence: 99%

A Survey on the State-of-the-Art and Future Trends of Multilevel Inverters in BEVs

2023

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All electric vehicles are the only way to decarbonize transport quickly and substantially. Although multilevel inverters have already been used in some transportation modes, they are rarely used in road transportation, especially in light-duty passenger BEVs. With the transition to a high 800-V DC link to extend the driving range and enable extreme fast charging, the possibility of using multilevel inverters in commercial light-duty passenger BEVs becomes feasible. Higher efficiency, higher power density, better waveform quality, lower switching frequency, the possibility of using low-rated switches, and inherent fault tolerance are known advantages of multilevel inverters that make them an efficient option for replacing 2-level inverters in high DC link passenger BEVs. This paper discusses high DC link voltage benefits in light-duty passenger BEVs, presents the state-of-the-art of different conventional multilevel inverter topologies used in BEVs, and compares them with conventional 2-level inverters from different aspects and limitations. Based on commercial upper-class passengers’ BEV data and a review of multilevel inverters on the market, future trends and possible research areas are identified.

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Section: In Electric Shipsmentioning

confidence: 99%

A Survey on the State-of-the-Art and Future Trends of Multilevel Inverters in BEVs

2023

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“…Long et al 73 described a symmetrical, hybrid five‐level MLI for electric ship‐propulsion drives. The individual phases of the proposed MLI comprise a high‐frequency DC/DC multilevel converter stage and a fundamental‐frequency H‐bridge stage.…”

Section: Reduced Switch Mlismentioning

confidence: 99%

“…The main disadvantage of this MLI is the neutral point voltage balancing problem. The classical phase‐shifted PWM (PSPWM) control method is employed to overcome the neutral point voltage balancing issue 73 . It is suitable for medium‐duty EV applications.…”

Section: Reduced Switch Mlismentioning

confidence: 99%

Review of reduced‐switch multilevel inverters for electric vehicle applications

Aishwarya

Sheela

2021

Circuit Theory & Apps

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This paper deals with the detailed review and comparative analysis of latest reduced switch multilevel inverter topologies for electric vehicle applications. The recent trends in reduced‐switch multilevel inverters are discussed. Detailed review of the reduced‐switch multilevel inverter topologies, their merits and demerits, and the comparative analysis based on component count, total harmonic distortion, and efficiency are conducted. This paper gives a detailed review of recent trends in reduced‐switch multilevel inverter topologies for electric vehicle applications. Switching pattern of the topologies is provided for better understanding of the inverter operation. Comparative analysis of the reduced‐switch inverter topologies based on the component count, total harmonic distortion of output voltage, and efficiency is also presented in this paper. Based on the comparative analysis, it is observed that the interleaved nine‐level flying capacitor multilevel inverter topology achieved the lowest output voltage distortion of 1.6%, which is within the acceptable limits of IEEE 519‐2014 standard. It is observed that the three‐level active neutral point clamped multilevel inverter topology achieved the highest working efficiency of 99.4%. This paper discusses the most recent trends in reduced‐switch multilevel inverters. A comprehensive review of the recent publications and a crisp comparative analysis of the different inverter configurations based on component count, harmonic distortion of output voltage, and efficiency are presented in this paper.

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