Reliability of semiconductor lasers used in current communication systems and sensing equipment

Fukuda, Mitsuo

doi:10.1016/j.microrel.2007.07.007

Cited by 6 publications

(1 citation statement)

References 16 publications

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“…Figure 1 shows the number of vehicles by type of power modules used in drive inverters and by commissioning year, according to a survey on electric trains operated by 35 operators on conventional railways as of March 2020. 1,2 Thus, SiC-based inverters amounted to about 45% in 2019.…”

Section: Introductionmentioning

confidence: 99%

Experimental verification of isolation power circuit for transformer‐less AC fed electric vehicles

Fukuda,

Funaki

2024

Electrical Engineering Japan

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This study aimed to develop a power supply system without a traction transformer for weight reduction and downsizing. Transformer‐less power supply is expected to realize step‐down, rectification, isolation, and motor drive using a high‐voltage silicon carbide power device. The primary challenge of this study was developing a novel circuit that isolates the motor drive circuit from the AC line without using the traction transformer. Accordingly, we devised a flying capacitor circuit to solve the existing problems and achieve capacitive isolation. Subsequently, we devised a nesting capacitor as a short‐circuit prevention measure. In this study, the operation of the isolated circuit was verified by numerical simulation, complemented by experimental verification of the proposed circuit.

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Section: Introductionmentioning

confidence: 99%