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DC-Link Capacitor Lifetime under Various Operating Conditions
2019 IEEE 13th International Conference on Compatibility, Power Electronics and Power Engineering (CPE-POWERENG), 2019A grid-tied DC/AC converter transfers the energy to the power system under different operating conditions such as DC-Link voltage level, power factor, and instability in the grid voltage. There are some effects of the operating conditions to the DC-Link capacitor lifetime.
Bilgin, Mert Serdar +3 more
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A DC-link capacitor minimization method through direct capacitor current control
IEEE Transactions on Industry Applications, 2003If we make the converter side DC link current the same as the inverter side DC link current in a PWM converter-inverter system, no current will flow through the DC link capacitor and as a result, no DC link voltage variation occurs. This leads to the possibility of significantly reducing the size of DC link capacitors which are expensive, bulky and ...
Gu, BG, Nam, K
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DC-link shunt compensator for three-phase system with small DC-link capacitor
2015 9th International Conference on Power Electronics and ECCE Asia (ICPE-ECCE Asia), 2015This paper proposes a control method of DC-link shunt compensator (DSC) located to DC-node in three-phase diode rectifier system. The circuit can substitute for bulky components such as DC reactor filter and DC-link capacitor from conventional three-phase system.
Hojoon Shin, Hyeon-Gyu Choi, Jung-Ik Ha
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Comparison of DC-Link Capacitor Types Under Various Grid Conditions
2019 IEEE 13th International Conference on Compatibility, Power Electronics and Power Engineering (CPE-POWERENG), 2019A DC/AC converter can face negative conditions of power systems such as instability. One of the most crucial necessities of the grid is voltage stability. There are some effects of voltage unbalance for grid-tied DC/AC converters. Grid voltage unbalance causes higher THD values on grid currents than normal grid conditions.
Bilgin, M. S. +3 more
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2018 IEEE 4th Information Technology and Mechatronics Engineering Conference (ITOEC), 2018
In some applications, to increase the system power density and lower the system cost, the dc-link capacitance of PMSM drives needs to be reduced. However, such practice may cause considerable dc-link voltage fluctuation. In this study, a method is proposed to reduce the dc-link voltage fluctuation.
Ke Li, Yi Wang
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In some applications, to increase the system power density and lower the system cost, the dc-link capacitance of PMSM drives needs to be reduced. However, such practice may cause considerable dc-link voltage fluctuation. In this study, a method is proposed to reduce the dc-link voltage fluctuation.
Ke Li, Yi Wang
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Condition Monitoring of DC-Link Capacitors in Aerospace Drives
IEEE Transactions on Industry Applications, 2012This paper proposes a novel online condition monitoring system of dc-link metallized polypropylene capacitors in fault-tolerant drives for aerospace applications. The estimation technique makes use of voltage and current sensors which are already in place for protection and control purposes.
Wechsler A +4 more
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IECON 2021 – 47th Annual Conference of the IEEE Industrial Electronics Society, 2021
In order to avoid the failure of electrolytic capacitor due to the influence of ambient temperature, film capacitors are applied in the DC-link of permanent magnet synchronous motor (PMSM) drive systems. In this paper, an online estimation method of DC-link capacitance is proposed for the electrolytic capacitorless motor drive system. The power signals
Bingqi Zhou +5 more
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In order to avoid the failure of electrolytic capacitor due to the influence of ambient temperature, film capacitors are applied in the DC-link of permanent magnet synchronous motor (PMSM) drive systems. In this paper, an online estimation method of DC-link capacitance is proposed for the electrolytic capacitorless motor drive system. The power signals
Bingqi Zhou +5 more
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DC-link capacitor condition monitoring
Poster presentation at VII Sci&Tec Conf Energy-Efficient Converter Drives in Industry 2025, Poland, June 2-4 ...Oliszewski, Stanisław +2 more
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Method for balancing capacitors voltages on split DC-links
2016 18th European Conference on Power Electronics and Applications (EPE'16 ECCE Europe), 2016A technique to actively balance the voltages on series-connected capacitors designated to split DC sources whose loads comprise power converters is presented. It performs such balancing dynamically, enabling the voltage equalization even for small capacitors under wide power and voltages ranges. Proposal consists on lightly controlling the power of one
Douglas Pappis +2 more
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Resonance Suppression Between Line Inductor and DC-Link Capacitor
2020The harmonic of the grid current is an important issue in the reduced DC-link capacitance motor drive system. An input inductor has been applied in the grid side to improve the grid current quality.
Gaolin Wang +3 more
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