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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), 2019 A 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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Reliability of Capacitors for DC-Link Applications in Power Electronic Converters—An Overview [PDF]
IEEE Transactions on Industry Applications, 2014 DC-link capacitors are an important part in the majority of power electronic converters which contribute to cost, size and failure rate on a considerable scale.
Frede Blaabjerg, Huai Wang
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A study on the effect of DC-link decoupling capacitors
IECON 2017 - 43rd Annual Conference of the IEEE Industrial Electronics Society, 2017DC-link capacitors are usually utilized in voltage source converters to stabilize the DC-link voltage and suppress the transmission of current harmonics into the power grid. To guarantee the reliability of voltage source converters, in addition to select the DC-link capacitors with optimum capacitance, appropriate rated voltage and enough ripple ...
Lei Li +5 more
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DC-link voltage stabilization for reduced dc-link capacitor inverter
2009 IEEE Energy Conversion Congress and Exposition, 2009In conventional motor drive systems using pulsewidth modulation (PWM) inverters, large electrolytic capacitors are used for stabilization of the dc-link voltage. Since the electrolytic capacitors are bulky and reduce reliability of the system due to short lifetime, there have been many efforts to eliminate or reduce the electrolytic capacitors in the ...
null Wook-Jin Lee, null Seung-Ki Sul
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Online Estimation Method of DC-Link Capacitors for Reduced DC-Link Capacitance IPMSM Drives
IEEE Transactions on Power Electronics, 2021In order to extend the lifetime and save the system cost, the film capacitor is applied to the dc link of interior permanent magnet synchronous motor (IPMSM) drives. Many active damping control methods have been carried out to improve the drive system stability, which needs the accurate value of the dc-link film capacitor.
Nannan Zhao +5 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 Conductor Rail with Distributed DC Link Capacitors
2021 IEEE Fourth International Conference on DC Microgrids (ICDCM), 2021DC conductor rails are an attractive choice for many conveyor systems as commonly used in car factories. Replacing the DC link capacitances of the moving conveyors and of the DC supply by capacitors distributed along the conductor rail in a DC grid system can reduce mass and size of moving conveyors.
Patrick Lenzen +2 more
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Use of a Series Voltage Compensator for Reduction of the DC-Link Capacitance in a Capacitor-Supported System [PDF]
IEEE Transactions on Power Electronics, 2014 A technique for reduction of the dc-link capacitance in a capacitor-supported system is presented. The concept is based on connecting a voltage source in series with the dc bus line to compensate the ripple voltage on the dc-link capacitor, so as to make
Huai Wang, Henry Shu-Hung Chung
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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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Reliability Comparison of DC Link Capacitor Bank for Different Configurations
2019 IEEE International Conference on Industrial Technology (ICIT), 2019A single phase grid connected solar Photovoltaic (PV) inverter requires capacitor banks as an energy buffer at a dc-link. The capacitor bank consists of Aluminum Electrolytic Capacitors (AECs), which are prone to early failure due to various electrical and environmental stresses.
Sagar B. Narale +4 more
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