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논문 기본 정보

자료유형
학술저널
저자정보
VU VAN HUNG (Korea Maritime & Ocean University) Kyoung-kuk Yoon (Korea Maritime & Ocean University) Sung-geun Lee (Korea Maritime & Ocean University)
저널정보
한국마린엔지니어링학회 Journal of Advanced Marine Engineering and Technology (JAMET) 한국마린엔지니어링학회지 제47권 제5호
발행연도
2023.10
수록면
219 - 225 (7page)
DOI
10.5916/jamet.2023.47.5.219

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초록· 키워드

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Various regulations for the prevention of environmental pollution are being implemented worldwide. Environmental pollution is mostly attributed to harmful gases emitted during engine combustion in ships or automobiles, including thermal power generation. To solve this problem, electricity is produced and stored from new renewable energy sources, such as solar, wind, and wave power, and is used to propel ships and cars. Electric propulsion ships or electric vehicle systems consist of a battery, an inverter, and an electric motor. The DC power stored in the battery is composed of a sinusoidal AC voltage through an inverter and is applied to the electric motor. The most important aspect is to safely manage a battery, which is a core component of an electric propulsion system, to avoid explosion, overheating or the generation of an overcurrent. Therefore, it is important not only to always observe the ambient temperature, rated voltage, and current but also to remove factors that may harm the safety of the battery in advance. In particular, the sinusoidal AC voltage applied to the motor modulates the command voltage into the form of a switching pulse, which is then applied to the upper and lower legs (Leg) of the inverter. Therefore, the voltage and current of the inverter contain various harmonics that can adversely affect the propulsion system, including the batteries. In this study, the modulation types of the two switching pulses are selected, and motor-speed control is performed according to each type. Simultaneously, the relationship between the harmonics and lifetime is analyzed by measuring the current harmonics flowing through an electrical motor and the internal resistance, which is a parameter that can predict the lifetime of the battery.

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Abstract
1. Introduction
2. Theory
3. Experiment and Consideration
4. Conclusion
References

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