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Hybrid SVPWM strategy for diode-clamped 3H-bridge inverter
2014 17th International Conference on Electrical Machines and Systems (ICEMS), 2014The paper presents a novel space vector modulation strategy for a single phase three-level neutral-point-clamped(NPC) inverter. Based on the operating principle of NPC inverter, this strategy overcomes one of the main problems of this inverter, which is the DC-link capacitors voltage unbalancing problem that appears in the neutral point under some ...
Chengmei Lin +4 more
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Experimental verification of loss reduction in diode-clamped multilevel inverters
2011 IEEE Energy Conversion Congress and Exposition, 2011Recently, power converters with lower power loss and lower electromagnetic interference (EMI) are required in many applications. To satisfy these requirements, diode-clamped multilevel inverters are investigated. In this case, the voltage balancing circuit must be connected to the DC capacitors because the DC voltages tend to unbalance when the number ...
Yukihiko Sato, Takumi Ito
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Voltage balancing control of diode-clamped multilevel rectifier/inverter systems
38th IAS Annual Meeting on Conference Record of the Industry Applications Conference, 2003., 2004 This paper presents a new voltage balancing control for the diode-clamped multilevel rectifier/inverter system. A complete analysis of the voltage balance theory for a 5-level back-to-back system is given.
F.Z. Peng +4 more
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Diode Clamped Three Level Inverter Using Sinusoidal PWM
2012 International Conference on Communication Systems and Network Technologies, 2012An inverter is a circuit which converts dc power into ac power at desired output voltage and frequency. The a.c. output voltage can be fixed at a fixed or variable frequency. This conversion can be achieved by controlled turn ON & turn OFF or by forced commutated thyristors depending on applications.
Piyush P. Gajbhiye, N.J. Phadkule
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Experimental and simulation analysis for the 5-level diode clamped inverter
2015 4th International Conference on Electric Power and Energy Conversion Systems (EPECS), 2015This paper investigates the performance of the multilevel, (5-level), diode clamped inverter in terms of the magnitude of the output voltage and harmonic spectrum of its output. This paper presents simulation results for the output voltage and how it can be controlled to get variable output voltage.
A. T. Al Sakhen +3 more
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A closed-loop voltage balance method for five-level diode-clamped inverters
IECON 2017 - 43rd Annual Conference of the IEEE Industrial Electronics Society, 2017Voltage deviations of dc-link capacitors are the main problem of multilevel diode-clamped converters (DCC). In this paper, a novel carrier-based voltage balance method is proposed to balance the dc-link capacitors of five-level DCCs. The proposed method is characterized by injecting proper zero-sequence voltages in the modulation signals of carrier ...
Dongdong Cui +3 more
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MULTI-WINDING TRANSFORMER-BASED DIODE CLAMPING MULTILEVEL INVERTER, EXPERIMENTAL RESULTS
Journal of Circuits, Systems and Computers, 2013The feasibility of a staircase-output, diode clamping multilevel inverter based on multiwinding transformer is investigated through experimental results including: output voltage and current waveforms under resistive and inductive loads and the THD. The 2.5 kW, 7-level prototype of the constructed configuration proves the ability to act as an inverter
Ehsan Esfandiari +2 more
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Reducing Number of Switches in Multilevel Inverter Using Diode Clamped and H-Bridge Inverters
2020The multilevel inverters (MLI) are having more features to usage. In existing methods like diode clamped MLI and H-Bridge MLI, more number of switches are using compared to proposed MLI. So, a new method of 35-level MLI topology is a combination of diode clamped and cascaded multilevel inverters.
Karanam Deepak +3 more
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Extending the operating range in Diode-Clamped Multilevel inverters with Active Front Ends
2012 IEEE International Energy Conference and Exhibition (ENERGYCON), 2012A new modulation scheme, optimized for achieving a correct dc-link capacitor voltages balance in Diode-Clamped Multilevel inverters with Active Front End (AFE), beyond the limits found in the past, is presented. A detailed explanation of the new technique and how the optimization is achieved are presented.
MARCHESONI, MARIO, VACCARO, LUIS RAMON
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A Natural DC-Link Voltage Balancing of Diode-Clamped Inverters in Parallel Systems
IEEE Transactions on Industrial Electronics, 2013This paper presents a method of natural dc-link capacitor voltage balancing of three- and single-phase neutral-point-clamped (NPC) inverters working in parallel configurations. It is proven that, in such parallel systems, when the inverters are insulated, the conditions for natural balancing can be achieved, and the application of a balancing circuit ...
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