A Switched-DC Source Sub-Module Multilevel Inverter Topology for Renewable Energy Source Applications

Hosseinzadeh, Mohammad Ali; Sarebanzadeh, Maryam; Babaei, Ebrahim; Rivera, Marco; Wheeler, Patrick

doi:10.1109/access.2021.3115660

Cited by 32 publications

(6 citation statements)

References 33 publications

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“…Also, Non and Noff are low for the proposed topology as S1 and S2 are either switched OFF or ON in a complete half cycle, and other switches (S9, S10, S11, S12) also have lesser number of switching, resulting in reduced switching loss. Conduction loss is mostly caused by the on-state resistances and the forward voltage drop across the devices in the load current route [38], [39]. When the load current reaches its maximum value, the voltage stress across the switches and the conduction loss both peak to their extremes.…”

Section: Power Loss Analysismentioning

confidence: 99%

A Single-Source Switched-Capacitor 13-Level High Gain Inverter With Lower Switch Stress

et al. 2023

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A switched-capacitor based 13-level inverter with high gain and reduced switch stress is presented in this article. The 13-level single-phase ac output voltage is achieved with a voltage gain of 6 by utilizing a single dc source, 14 switches, 3 capacitors and 1 diode in the proposed converter. Self-voltage balancing is achieved for different types of loads without the use of complicated control schemes or supplementary circuitry. The proposed topology can generate negative polarity without a back-end H-bridge. Consequently, voltage stresses across the switches are reduced. The voltage stress across the switches is limited to 4 times the input DC voltage. Included also is an analysis of power loss for several components of the proposed converter. A comparison is made with contemporary topologies that require a single dc source at the input in terms of several performance characteristics. Resistive (R) and resistive plus inductive (R-L) loads are simulated in this study. To demonstrate the effectiveness of the suggested converter, a laboratory prototype is constructed. In order to demonstrate the viability of the suggested arrangement, the experimental results for step variation in load demand and variation in modulation index under practical loading situations are obtained.

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Section: Power Loss Analysismentioning

confidence: 99%

A Single-Source Switched-Capacitor 13-Level High Gain Inverter With Lower Switch Stress

et al. 2023

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“…In ( 7) and ( 8), i represents the ith particle; t is the number of iteration, r 1 and r 2 are random numbers between [0,1], c 1 and c 2 represent acceleration constants; io i and go are the ith individual optimal and the global optimal positions; ω represents inertial weight which is determined by (9):…”

Section: ) the Shortcomings Of Psomentioning

confidence: 99%

“…As the first choice of high power supply, multilevel inverter has the advantages of high output voltage, high energy conversion efficiency, low THD, low switching stress, and strong ability to resist electromagnetic interference [2]- [4]. Therefore, it is widely used in many aspects, such as FACTS devices, HVDC lines, electrical drives, battery energy storage systems, uninterruptible power supply systems, renewable energy and distributed generation systems [5]- [9].…”

Section: Introductionmentioning

confidence: 99%

An Improved Hybrid PSO-TS Algorithm for Solving Nonlinear Equations of SHEPWM in Multilevel Inverters

Zhang

Li³

2022

IEEE Access

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Selective Harmonic Elimination Pulse Width Modulation (SHEWM) can eliminate selected low order harmonics by solving nonlinear transcendental equations to obtain the switching angles in advance and achieve precise harmonics control. However, when solving nonlinear equations, the convergence rate and solution accuracy of the existing intelligent algorithms for multilevel inverter SHEPWM will decrease with the increase of the number of switching angles. In this paper, an improved hybrid PSO-TS algorithm (IPSO-TS) is proposed for switching angle selection in PWM inverter. In the proposed IPSO-TS algorithm, both the PSO algorithm and TS algorithm are improved respectively to enhance their convergence when calculating multiple switching angles. Also, these two improved algorithms are combined to obtain the hybrid algorithm IPSO-TS, in which PSO is used to provide global search capabilities, and TS is used to increases the accuracy of solutions. Simulations are carried out using MATLAB/SIMULINK environment to demonstrate the better convergence of the proposed algorithm compared with the other existing methods. Moreover, the simulation results are further verified by experimental results.

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“…achieve a higher level output voltage waveform. As the number of levels in the output voltage increases, these conventional MLIs suffer from a number of problems, including the need for more components, such as clamping diodes in diode clamped MLIs, flying capacitors in FC-MLIs, and additional dc sources in CHB-MLIs [3]. Furthermore, capacitor voltage balancing in diode clamped and FC-MLIs necessitates sophisticated control algorithms, these traditional MLIs lack voltage boosting features, and voltage stress across switches is also high.…”

Section: Introductionmentioning

confidence: 99%

Symmetric and Asymmetric Multilevel Inverter Topologies With Reduced Device Count

et al. 2023

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In this work, two new topologies of single-phase hybrid multilevel inverters for symmetrical and asymmetrical configurations are presented for use in drives and control of electrical machines and the connection of renewable energy sources. The proposed topology uses 2 dc sources, 12 switches, 1 flying capacitor, and 3 diodes to generate boosted 13-levels and 17-levels for symmetric and asymmetric configuration, respectively. Self-voltage balancing of its capacitor voltage regardless of load type, load dynamics, or modulation index is a key advantage of the suggested design. The higher performance of proposed topologies in terms of the total number of switches, TSV, THD, switch stress, and dc sources are demonstrated by comparing those with recently published topologies. In addition, a widely employed nearest level control modulation approach is used to provide output voltage levels with low THD. Finally, experiments were undertaken to validate the performance of the suggested topology.INDEX TERMS Multilevel inverter (MLI), switched-capacitor, nearest level control (NLC), total standing voltage (TSV). MOHAMMED A. AL-HITMI (Member, IEEE) received the B.Sc. degree in electrical engineering from Qatar University, Doha, Qatar, in 1992, and the M.S. and Ph.D. degrees in control engineering from The University of Sheffield, in 1994 and 2002, respectively. He is currently an Associate Professor of electrical engineering with Qatar University, where he is also working as the Head of the Department of Electrical Engineering. He has conducted many research projects funded by national and industrial funding agencies. He has authored more than 50 research papers in top peer-reviewed journals and conferences. His research interests include control systems theory, neural networks, fuzzy control, and electric drive systems. He is involved in several administrative committees in leadership roles with Qatar University. He is also serving as a reviewer for many top journals. MD. REYAZ HUSSAN (Student Member, IEEE) received the B.Tech. and M.Tech. degrees in electrical engineering and instrumentation and control

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A Switched-DC Source Sub-Module Multilevel Inverter Topology for Renewable Energy Source Applications

Cited by 32 publications

References 33 publications

A Single-Source Switched-Capacitor 13-Level High Gain Inverter With Lower Switch Stress

A Single-Source Switched-Capacitor 13-Level High Gain Inverter With Lower Switch Stress

An Improved Hybrid PSO-TS Algorithm for Solving Nonlinear Equations of SHEPWM in Multilevel Inverters

Symmetric and Asymmetric Multilevel Inverter Topologies With Reduced Device Count

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