A Si/SiC Hybrid Five-Level Active NPC Inverter With Improved Modulation Scheme

Zhang, Li; Zheng, Zhongshu; Li, Chushan; Ju, Ping; Wu, Feng; Gu, Y. T.; Chen, Guang

doi:10.1109/tpel.2019.2944688

Cited by 51 publications

(39 citation statements)

References 25 publications

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“…Both the analytical and experimental approaches provide the same results. As can be seen, in the inverter side the most stressed switches are Sy,21, Sy,22, while the least stressed switches are located in the middle leg Sy, 23,Sy,24. In the rectifier side, the most stressed and the least stressed power semiconductors are Dx, 21,Dx,22 and Sx,23,Sx,24, respectively. Based on the datasheet provided by the power semiconductor manufacturers, it has been possible to estimate the efficiency distribution of the proposed converters using an analytical approach and a simulation approach.…”

Section: Simulation Resultsmentioning

confidence: 96%

“…Furthermore, the weight and volume of the converter passive components are likely to be reduced [14][15][16][17], which is very appealing for several applications, where the overall size and weight of the electrical generating system needs to be minimized. Given the high number of benefits, more and more multilevel converter topologies are proposed in the literature [17][18][19][20][21]. It is understood that multilevel topology can act on the voltage stress of the power semiconductors, leaving their current ratings unchanged.…”

Section: Introductionmentioning

confidence: 99%

“…The declared peak efficiency and power density were 99.26% and 4 kW/dm 3 , respectively. A hybrid Five-Level Active NPC Inverter that uses SiC and is able to achieve a peak efficiency above 98% has been proposed in [21].…”

Section: Introductionmentioning

confidence: 99%

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High-Performance 3-Phase 5-Level E-Type Multilevel–Multicell Converters for Microgrids

et al. 2021

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This paper focuses on the analysis and design of two multilevel–multicell converters (MMCs), named 3-phase 5-Level E-Type Multilevel–Multicell Rectifier (3Φ5L E-Type MMR) and 3-phase 5-Level E-Type Multilevel–Multicell Inverter (3Φ5L E-Type MMI) to be used in microgrid applications. The proposed 3-phase E-Type multilevel rectifier and inverter have each phase being accomplished by the combination of two I-Type topologies connected to the T-Type topology. The two cells of each phase of the rectifier and inverter are connected in interleaving using an intercell transformer (ICT) in order to reduce the volume of the output filter. Such an E-Type topology arrangement is expected to allow both the high efficiency and power density required for microgrid applications, as well as being capable of providing good performance in terms of quality of the voltage and current waveforms. The proposed hardware design and control interface are supported by the simulation results performed in Matlab/Simulink. The analysis has been then validated in terms of an experimental campaign performed on the converter prototype, which presented a power density of 8.4 kW/dm3 and a specific power of 3.24 kW/kg. The experimental results showed that the proposed converter can achieve a peak efficiency of 99% using only silicon power semiconductors.

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Section: Simulation Resultsmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

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High-Performance 3-Phase 5-Level E-Type Multilevel–Multicell Converters for Microgrids

et al. 2021

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“…As a result, a 5L ANPC full-bridge topology with a 4SiC/2Si hybrid scheme was proposed, as shown in Fig . 27 [99] . By employing the novel modulation scheme, some switching actions are added to decrease the conduction loss.…”

Section: Hybrid Applications Under 5l-anpcmentioning

confidence: 99%

A review of WBG and Si devices hybrid applications

Zhang

Zheng

Lou

2021

Chin. J. Electr. Eng.

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In recent years, next-generation power semiconductor devices, represented by silicon carbide (SiC) and gallium nitride (GaN), have gradually emerged. Because wide-bandgap (WBG) devices have better electrical characteristics than those of silicon (Si) based devices, they have attracted increased attention both from academic researchers and industrial engineers. Employing WBG devices will further improve the efficiency and power density of power converters. However, the current price of WBG devices remains extremely high. Thus, some researches have focused on the hybrid utilization of WBG devices and Si-based devices to achieve a tradeoff between the performance and cost. To summarize the current research on WBG/Si hybrid applications, the issues mentioned above with representative research approaches, results, and characteristics, are systematically reviewed. Finally, the current research on WBG/Si hybrid applications and their future trends are discussed.

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“…Therefore, not being able to operate at high frequency, using SiC devices will not be so beneficial in cell 2. Recently, a hybrid Si/SiC 5L-ANPC inverter has been introduced to mitigate the overall losses while maintaining a compromise between the cost and efficiency [18] . However, the IGBTs and SiC MOSFETs are required to block the whole and half of the DC-bus voltage, respectively.…”

Section: Introduction mentioning

confidence: 99%