scholarly journals A New 13-Level Switched-Capacitor Inverter with Reduced Device Count

2021 ◽  
Vol 6 (1) ◽  
pp. 26-41
Author(s):  
Kasinath Jena ◽  
Chinmoy Kumar Panigrahi ◽  
Krishna Kumar Gupta
Keyword(s):  
Cost Effective ◽  
Modulation Scheme ◽  
Switched Capacitor ◽  
Structural Description ◽  
Principle Calculation ◽  
Voltage Balancing ◽  
Blocking Voltage ◽  
Capacitor Voltage ◽  
Working Principle ◽  
Parallel Technique

Abstract This paper proposed a new voltage-boosting 13-level switched-capacitor (SC) cost-effective inverter. The proposed topology comprises fourteen transistors, three capacitors and a single DC source to produce a 13-level staircase waveform. The capacitor voltage balancing problem is inherently solved by the series/parallel technique. Structural description, working principle, calculation of optimum values of capacitance and modulation scheme are briefly described. The comparative analyses with the existing SC multilevel inverter (MLI) in terms of voltage gain, blocking voltage, total standing voltage (TSV), component per level factor and cost function illustrate the merits of the proposed topology. Further, simulation and experimental results at different loading conditions verify the feasibility of the proposed topology.

scholarly journals Experimental validation of new self-voltage balanced 9L-ANPC inverter for photovoltaic applications

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
M. Jagabar Sathik ◽  
Dhafer J. Almakhles ◽  
N. Sandeep ◽  
Marif Daula Siddique
Keyword(s):  
Output Voltage ◽  
Pulse Width Modulation ◽  
Superior Performance ◽  
Modulation Scheme ◽  
Switching Frequency ◽  
Switched Capacitor ◽  
Renewable Energy Resources ◽  
High Quality ◽  
Multilevel Inverters ◽  
Blocking Voltage

AbstractMultilevel inverters play an important role in extracting the power from renewable energy resources and delivering the output voltage with high quality to the load. This paper proposes a new single-stage switched capacitor nine-level inverter, which comprises an improved T-type inverter, auxiliary switch, and switched cell unit. The proposed topology effectively reduces the DC-link capacitor voltage and exhibits superior performance over recently switched-capacitor inverter topologies in terms of the number of power components and blocking voltage of the switches. A level-shifted multilevel pulse width modulation scheme with a modified triangular carrier wave is implemented to produce a high-quality stepped output voltage waveform with low switching frequency. The proposed nine-level inverter’s effectiveness, driven by the recommended modulation technique, is experimentally verified under varying load conditions. The power loss and efficiency for the proposed nine-level inverter are thoroughly discussed with different loads.

The Research Status of Modular Multilevel Converter and its Capacitor Voltage Balancing Control

2014 ◽  
Vol 535 ◽  
pp. 153-156
Author(s):  
Ya Ai Chen ◽  
Peng Chen ◽  
Jing Hua Zhou
Keyword(s):  
Modular Multilevel Converter ◽  
Multilevel Converter ◽  
Topology Structure ◽  
Voltage Balancing ◽  
Research Status ◽  
Hvdc System ◽  
Capacitor Voltage ◽  
Working Principle ◽  
Balancing Control

The thesis mainly analyzes the topology structure and the working principle of MMC based VSC-HVDC system; introduces the characteristics and research status of its capacitor voltage balancing control. All of this will lay a foundation for the further research.

scholarly journals A New Step-Up Switched-Capacitor Voltage Balancing Converter for NPC Multilevel Inverter-Based Solar PV System

IEEE Access ◽  
2020 ◽  
Vol 8 ◽  
pp. 83940-83952 ◽  
Author(s):  
Amir Taghvaie ◽  
Md. Enamul Haque ◽  
Sajeeb Saha ◽  
Md. Apel Mahmud
Keyword(s):  
Multilevel Inverter ◽  
Switched Capacitor ◽  
Solar Pv ◽  
Pv System ◽  
Voltage Balancing ◽  
Capacitor Voltage ◽  
Solar Pv System

scholarly journals A Cost-Effective Resonant Switched-Capacitor DC-DC Boost Converter – Experimental Results and Feasibility Model

2018 ◽  
Vol 3 (1) ◽  
pp. 75-83 ◽  
Author(s):  
Zbigniew Waradzyn ◽  
Robert Stala ◽  
Aleksander Skała ◽  
Andrzej Mondzik ◽  
Adam Penczek
Keyword(s):  
Cost Effective ◽  
Lower Number ◽  
Experimental Results ◽  
Switched Capacitor ◽  
Capacitor Voltage ◽  
Charging Mode ◽  
Gate Driver ◽  
Active Switch ◽  
Control Circuits ◽  
The Cost

Abstract This paper presents the results of experimental research of a resonant switched capacitor voltage multiplier in a cost-effective topology (CESCVM) with a limited number of active switches. In the charging mode of the switched capacitors, the converter utilizes only one active switch and a required number of diodes. Therefore, the cost of the converter is decreased as compared with that of a classical SCVM converter, owing to a lower number of switches and gate driver circuits, as well as a smaller PCB area. Moreover, the CESCVM has simpler control circuits and higher reliability. This paper presents the original experimental results of the operation of the CESCVM converter. A concept of the bootstrap supply of gate drivers of the flying switches is also examined.

Capacitor Voltage Regulation in Single-DC-Source Cascaded H-Bridge Multilevel Converters Using Phase-Shift Modulation

2013 ◽  
Vol 60 (9) ◽  
pp. 3619-3626 ◽  
Author(s):  
Hossein Sepahvand ◽  
Jingsheng Liao ◽  
Mehdi Ferdowsi ◽  
Keith Corzine
Keyword(s):  
Phase Shift ◽  
Control Method ◽  
Cost Effective ◽  
Voltage Regulation ◽  
Voltage Source ◽  
Power Electronic ◽  
Power Electronic Converters ◽  
Multilevel Converters ◽  
Voltage Balancing ◽  
Capacitor Voltage

Cascaded H-bridge multilevel power electronic converters generally require several dc sources. An alternative option is to replace all the separate dc sources feeding the H-bridge cells with capacitors, leaving only one H-bridge cell with a real dc voltage source. This will yield a cost-effective converter. However, the required capacitor voltage balancing is challenging. In this paper, using the phase-shift modulation approach, a new control method for cascaded H-bridge multilevel converters fed with only one independent dc source is presented. The proposed method has a wide voltage regulation range for the replacement capacitors in the H-bridge cells. Experimental and simulation results support the proposed control method.

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