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Single phase VSI with reduced-size DC-link capacitor
4th International Conference on Power Engineering, Energy and Electrical Drives, 2013This paper presents a voltage source inverter in a single phase system for photovoltaic applications. The singlephase H-Bridge is augmented by an additional leg from which greater degree of freedom has been achieved in terms of modulation strategy. This new topology demonstrates the feasibility to avoid the double line frequency ripple, which commonly ...
Bingsen Wang, United States, Yantao Song
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DC link capacitor optimization for integrated modular motor drives
2017 IEEE 26th International Symposium on Industrial Electronics (ISIE), 2017In this paper, selection of optimum DC link capacitor for Integrated Modular Motor Drives (IMMD) is presented. First, a review of IMMD technologies is given and current research and future prospects are studied. Inverter topologies and gate drive techniques are evaluated in terms of DC link performance.
Mesut Ugur, Ozan Keysan
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Hybrid-modulation scheme for dc-link-capacitor-less high-frequency-link inverters
2012 IEEE 5th India International Conference on Power Electronics (IICPE), 2012High-frequency-link (HFL) inverters, owing to rapid advancements in semiconductor devices and magnetics, are gaining momentum in power electronics with applications encompassing solar, wind, and fuel-cell energy systems, energy storage, electric/hybrid-electric vehicles, and power quality to name a few.
Sudip K. Mazumder, Arash Rahnamaee
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Condition Monitoring of DC Link Electrolytic Capacitors in Adjustable Speed Drives
2007 IEEE Industry Applications Annual Meeting, 2007A new preventive maintenance strategy for the sensorless condition monitoring of inverter dc-link aluminum electrolytic capacitors based on equivalent series resistance (ESR) and capacitance C estimation is proposed. The main concept of the proposed method is to estimate the ESR and C of the capacitor, using the inverter whenever the motor is stopped ...
null Kwang-Woon Lee +4 more
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New control scheme for AC-DC-AC converter without DC link electrolytic capacitor
Proceedings of IEEE Power Electronics Specialist Conference - PESC '93, 2002A novel concept for a static three-phase to three-phase power converter for an AC motor drive with unity power factor and reduced harmonics on the utility line is presented. The power circuit consists of two back-to-back connected six-pulse bridges having only a 5-/spl mu/F ceramic capacitor in the DC link.
J.S. Kim, S.K. Sul
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Early diagnosis in DC-link capacitors: electrolytic and films
2018This chapter presents an RUL prediction algorithm based on accelerated life test data and derived physics models for electrolytic capacitors. The main elements are (1) development of the first principles based degradation models; (2) the implementation of a Bayesian-based health state tracking and RUL prediction algorithm based on the Kalman filtering ...
Chetan Kulkarni +2 more
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DC-Link Capacitor Optimization in AC–DC Converter by Load Current Prediction
Intelligent Automation & Soft Computing, 2023V. V. Nijil, P. Selvan
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2023 IEEE Energy Conversion Congress and Exposition (ECCE), 2023
Geye Lu +3 more
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Geye Lu +3 more
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Reliability of capacitors for DC-link applications - An overview
2013DC-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. From capacitor users' viewpoint, this paper presents a review on the improvement of reliability of DC-link in power electronic converters from two aspects: 1) reliability-oriented DC-link ...
Wang, Huai +1 more
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Reliability of DC-link capacitors in power electronic converters
2015DC-link capacitors are widely used in power electronic converters to balance the instantaneous power difference between the input source and output load and to minimize voltage variation in the DC-link. In some applications, they are also used to provide energy storage. Figure 3.1 shows some typical configurations of power electronic conversion systems
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