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Method of identifying voltage difference of super capacitors and principle of voltage balancing
2007 European Conference on Power Electronics and Applications, 2007In this paper, the method of identifying voltage difference of super capacitors and the principle of voltage balancing are presented. They are evaluated, according to the tolerance of the capacitance difference, the nature of self-discharging feature and the feasibility of the real implementation. The results show, much energy can be available if lower
Cheng, Yonghua +5 more
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Capacitor Voltage Balancing in Multi-Level Voltage Reinjection (MLVR) Converters
IEEE Transactions on Power Delivery, 2005In common with conventional multi-level conversion configurations, the multi-level voltage reinjection scheme uses multi-level clamping and dc series connected capacitors. The operation conditions that lead to capacitor voltage unbalance are analyzed and the use of adaptive adjustment of the clamping switches conducting periods is investigated.
Y.H. Liu, J. Arrillaga, N.R. Watson
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Capacitor Voltage-Balancing Control for Flying-Capacitor MMC without Current Sensors
2020 IEEE 9th International Power Electronics and Motion Control Conference (IPEMC2020-ECCE Asia), 2020This paper proposes a submodule (SM) capacitor voltage balancing control scheme for the flying-capacitor modular multilevel converter (FC-MMC), where current sensors are not used. From the SM capacitor voltages and the half-arm insertion index, the DC and AC circulating currents are estimated, instead of measurement.
Duc Dung Le +2 more
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Capacitor voltage balancing in a 5-L full-bridge flying capacitor inverter
2017 Brazilian Power Electronics Conference (COBEP), 2017An active control method to balance the flying capacitor's voltage is presented for a single-phase full-bridge flying capacitor inverter. Based on the equations of flying capacitors, an analytical method that represents the natural capacitor's voltage balancing is introduced.
Rodrigo M. B. Moritz +1 more
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A Space Vector Modulation approach for capacitor voltage balancing of Flying Capacitor Converters
2011 Twenty-Sixth Annual IEEE Applied Power Electronics Conference and Exposition (APEC), 2011The capacitor voltage balancing is the main technical challenge of a multi-level Flying Capacitor Converter (FCC). This paper proposes a Space Vector Modulation (SVM)-based voltage balancing strategy that takes the advantage of redundant switching states of an n-level FCC to counteract the voltage drift/imbalance.
Sanghun Choi, Maraym Saeedifard
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DC Capacitor Voltage Balancing Control for Cascaded STATCOM
Applied Mechanics and Materials, 2013Through the DC side capacitor voltage unbalance problem of cascaded static synchronous compensator. Put through a theory of active voltage average distribution to balance DC capacitor voltage, using master slave controller to realize controlling requirements.
Sheng Qing Li +3 more
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Submodule Capacitor voltage balancing of Modular Multilevel Converter
2019 International Conference on Electrical, Electronics and Computer Engineering (UPCON), 2019A modular multilevel converter (MMC) is one of the latest next generation power electronic converter intended to be most suitable for industrial applications. It is made up of N number of sub-modules (SM) connected in cascaded form for obtaining desired high quality multilevel output voltage waveform.
Mohammad Tayyab, Adil Sarwar
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Capacitor Voltage Balancing of Flying Capacitor Multilevel Converters by Space Vector PWM
IEEE Transactions on Power Delivery, 2012Proper operation of a multilevel flying capacitor converter (FCC) necessitates a closed-loop voltage balancing strategy. This paper proposes a space vector modulation (SVM)-based approach that benefits from the switching state redundancy of an n-level FCC to implicitly carry out the voltage balancing task within the switching strategy.
Sanghun Choi, Maryam Saeedifard
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Capacitors voltage balancing modeling in three phase flying capacitor converters with booster
2012 3rd Power Electronics and Drive Systems Technology (PEDSTC), 2012This paper provides a mathematical model for voltage natural balancing process in three phase capacitor-clamped multicell converters. The analysis leads to state-space model of the converters. State-space representation of converter can be utilized to investigate the start-up and steady states of internal flying capacitors voltages.
Vahid Dargahi, Abbas Shoulaie
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