Results 151 to 160 of about 490 (182)
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DC Link Capacitor Voltage Balancing Method for Diode-Clamped Multilevel Converters
2019 IEEE 28th International Symposium on Industrial Electronics (ISIE), 2019This paper proposes a new capacitor voltage balancing method for diode-clamped multilevel inverters. In this method, proper redundant switching state is selected according to clamp points' voltages. The proposed method is independent of the phase and level numbers and is computationally optimized for practical implementation.
Jalal Amini, Mehrdad Moallem
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A novel DVR based on parallel-connected diode-clamped modular multilevel converters
2017 IEEE International Conference on Industrial Technology (ICIT), 2017The dynamic voltage restorer (DVR) is a fast and efficient solution to voltage sag problems. This paper proposes a new configuration of DVR which is based on the parallel diode-clamped modular multilevel converter (parallel-DCM2C). In the parallel-DCM2C topology the capacitor voltages distributed in the sub-modules (SMs) can be balanced automatically ...
Jingliang Lv +3 more
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A new balancing technique with power losses minimization in Diode-Clamped Multilevel Converters
2007 European Conference on Power Electronics and Applications, 2007A new PWM technique, capable of achieving a correct dc-link capacitor voltages balance in Diode- Clamped Multilevel inverters, within the limits defined by the theory, is presented. This result is obtained while decreasing the switching power losses when compared to techniques based on the use of redundant switching vectors.
BORGHETTI, GIOVANNI +4 more
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Voltage-balance limits in four-level diode-clamped converters with passive front ends
IEEE 2002 28th Annual Conference of the Industrial Electronics Society. IECON 02, 2003Multilevel diode-clamped converters with more than three levels cannot maintain voltage balance in the dc-link capacitors for some operating conditions due to the existence of dc currents in the middle points. Since capacitors are either completely charged or discharged for those conditions, this circumstance severely limits practical application of ...
Josep Pou +2 more
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Floating capacitor voltage regulation in diode clamped hybrid multilevel converters
2009 IEEE Electric Ship Technologies Symposium, 2009The family of hybrid topologies consisting primarily of a main Neutral Point Clamped (NPC) 3-phase inverter followed by one or more series connected H-Bridges in each output phase show promise in medium voltage applications requiring high power quality and minimal size and weight. Another distinct advantage of this topology is the ability to supply the
James A. Ulrich, Ashish R. Bendre
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Modeling and Analysis of 5-Level Diode-Clamped and Flying-Capacitors Converters
2006 IEEE International Symposium on Industrial Electronics, 2006Unique features of multi-level converters have recently nominated them as significant alternatives for solid-state power converting units, even in the low and medium power range. Some topological limitations such as dc side voltage balancing, however, have hindered the use of these converters as a handy means for various power conversion systems ...
S.A. Khajehoddin, A. Bakhshai, P.k. Jain
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A new snubber circuit for diode-clamped four-level inverter and converter
2001 IEEE 32nd Annual Power Electronics Specialists Conference (IEEE Cat. No.01CH37230), 2002This paper proposes a new snubber circuit for a 4-level inverter and converter. The snubber circuit makes use of an Undeland snubber and McMurray efficient snubber as its basic snubber unit, and can be regarded as a generalized combined Undeland and McMurray efficient snubber. The proposed snubber keeps such good features as fewer number of components,
null In-Dong Kim, null Eui-Cheol Nho
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Diode-clamped multilevel converter topology for battery cells charging applications
2013 IEEE Energytech, 2013A new charger control strategy for optimum charging of individual battery cells is proposed. The charger can directly charge individual battery cells based on their state-of-charge (SOC) using multilevel converter topology. In multilevel converter, individual cells are connected in series on the DC side of the converter.
Aparna Saha, Yilmaz Sozer
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Modeling and control of a five-level Diode-Clamped Converter based StatCom
2009 IEEE International Conference on Industrial Technology, 2009This paper presents a state model of a three-phase, four-wire five-level Diode-Clamped Converter (DCC) employed in a Static Compensator (StatCom) for medium power applications. Two auxiliary circuits are used to equalize the voltages across the DC-bus capacitors. A detailed controller design procedure is presented.
Dominic Dupuis, Francis Okou
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A Current Flow Model for m-Level Diode-Clamped Multilevel Converters
IECON 2006 - 32nd Annual Conference on IEEE Industrial Electronics, 2006Multilevel converters have gained much attention in recent years since they have been a key technology of power electronics to reach the high power ratings required by many applications. Some topological limitations such as dc side voltage balancing, however, have hindered the use of these converters.
S.A. Khajehoddin, A. Bakhshai, P.K. Jain
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