Results 11 to 20 of about 5,173 (291)
World Electric Vehicle JournalBrushless DC motors are often used as traction motors in electric vehicles due to their high power density and efficiency. The dc-link electrolytic capacitor is the most vulnerable part of the brushless DC motor drive system, and it determines the ...
Zhongquan Qian +4 more
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Reliability study on DC-link capacitor in fault states of VSI in elective vehicle
The Journal of Engineering, 2019 DC-input side of the inverter to balance input and output power, eliminate voltage fluctuation, and reduce the voltage spike in the input side. The reliability study on DC-link capacitor under fault state is critical to the safe operation of the whole ...
Fang Yao +3 more
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A Parameter Estimation Method of DC-link Capacitor Based on Pre-charge Process of Traction Converter
Kongzhi Yu Xinxi Jishu, 2023 As a key component of traction converter, DC-link capacitor plays a key role in stabilizing DC side voltage. However, when a DC-link capacitor is exposed to high temperature and high pressure for a long time, its equivalent series resistance(ESR) will ...
LYU Gexing, ZHU Qi
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Journal of King Saud University: Engineering Sciences, 2017 In this paper theoretical and experimental analysis of an AC–DC–AC inverter under DC link capacitor failure is presented. The failure study conducted for this paper is the open circuit of the DC link capacitor.
Hadeed A. Sher +3 more
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机车电传动, 2012 In the paper, to reduce the DC-link capacitor voltage harmonics of dual-cascading PWM rectifier in electric traction AC drive system, firstly, the theoretical design method of DC-link capacitor was introduced, then, the characteristic of high order ...
WANG Na, SONG Wen-sheng, FENG Xiao-yun
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Selection and Application of DC-link Capacitor for Mine-used 2-quadrant Frequency Converter
Gong-kuang zidonghua, 2011 Based on special characteristics of mine-used 2-quadrant frequency converter and analysis and calculation of ripple current and ripple voltage of DC-link capacitor of frequency converter, a simple and easy selection method of DC-link capacitor was ...
ZHUANG De-yu
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Energies, 2022 Electrolytic capacitor-less drive systems have a higher lifespan and reliability. However, the DC-link voltage of ECL drive systems has a sudden change under dynamic conditions, which results in a serious degradation of the drive system performance.
Chao Zhang +3 more
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An Identification Method for DC-Link Capacitor Capacitance of Grid Connected Inverter
Shanghai Jiaotong Daxue xuebao, 2022 DC-link for the capacitor is one of the most vulnerable components of the grid connected converter, whose capacitance identification will help to improve the system reliability by finding and replacing the aging capacitor in time.
ZHU Chenghao, WANG Han, SUN Guoqi, WEI Xiaobin, WANG Fuwen, CAI Xu
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IET Power Electronics, 2022 This paper proposes a novel active power decoupling circuit (APDC) based on modified Buck converter to reduce the DC‐link voltage ripple of small capacitor motor drive systems. The APDC is placed between the Boost PFC circuit and the DC‐link, and has two
Chao Zhang +4 more
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Health Monitoring of DC link Capacitors
Chemical Engineering Transactions, 2013 Electrolytic and metallized polypropylene film (MPPF) capacitors are among the most popular capacitors used in electronic equipments. The choice of capacitors is of major importance because one of the most frequent causes of the equipment breakdowns results from the failure of capacitors, and will therefore determine the overall lifetime of the system.
Makdessi, Maawad +2 more
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