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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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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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Discharge-Based Condition Monitoring for Electrolytic DC-Link Capacitors [PDF]
IEEE Transactions on Power ElectronicsElectrolytic capacitors are among the most vulnerable components in power electronic converters, risking their efficient and electrically stable operation. This is due to the decreasing capacitance under long-term stress.
Konstantinos Papastergiou +2 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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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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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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Comparative evaluation of DC-link capacitors for electric vehicle application
2012 IEEE International Symposium on Industrial Electronics, 2012In electric vehicle (EV) drive systems, sizing and selection of DC link capacitors involve tradeoffs among system performance including lifetime, reliability, cost, and power density. This paper contributes a comprehensive and comparative study on the DC-link capacitor applications and evaluations to meet the above requirements.
Huiqing Wen +2 more
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Aging Mechanism and Life Estimation of Photovoltaic Inverter DC-link Capacitors in Alternating Humid and Thermal Environment [PDF]
Chinese Journal of Electrical EngineeringDC-link capacitors play a vital role in managing ripple voltage and current in converters and various devices. This study focuses on exploring the aging characteristics of DC-link capacitors in alternating humid and thermal environments aligned with the ...
Dong, Haiying +4 more
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Line harmonics on systems using reduced DC-link capacitors
IECON 2013 - 39th Annual Conference of the IEEE Industrial Electronics Society, 2013As in all industrial sectors, drives for AC motors are constantly pushed for improvement. Drives using a reduced capacitance for DC-link filtering have gather attention in recent years as a way not only to increase the drives life-time but also to improve the line harmonics while, due to the increased computing capabilities, maintaining a reasonably ...
Hernan Miranda Delpino, Dinesh Kumar
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