A novel switching strategy for improving modularity and manufacturability of cascaded-transformer-based multilevel inverters

“…The different turn-ratio of cascaded transformers means the unbalance of power distribution per individual transformer and means the different saturation conditions of the transformers [26]. In this work we have focused on symmetric state.…”

Section: Comparison Studymentioning

confidence: 99%

“…Fig. 1 shows a single-phase topology of a cascaded transformer converter with single DC voltage source [26]. In cascaded transformer H-bridge multilevel inverters, selection of turn ratio of transformers is main part of inverter design.…”

Section: Introductionmentioning

confidence: 99%

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A New Family of Cascaded Transformer Six Switches Sub-Multilevel Inverter with Several Advantages

Banaei¹,

Salary²

2013

Journal of Electrical Engineering and Technology

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Abstract-This paper presents a novel topology for cascaded transformer sub-multilevel converter.Eachsub-multilevel converter consists of two DC voltage sources with six switches to achieve fivelevel voltage. The proposed topology results in reduction of DC voltage sources and switches number. Single phase low frequency transformers are used in proposed topology and voltage transformation and galvanic isolation between load and sources are given by transformers. This topology can operate as symmetric or asymmetric converter but in this paper we have focused on symmetric state. The operation and performance of the suggested multilevel converter has been verified by the simulation results of a single-phase nine-level multilevel converter using MATLAB/SIMULINK.

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“…[8], [11]. There are three wellknown topologies; diode-clamps, flying capacitor, and cascaded multilevel inverter (CMLI) [2], [5], [7], [9][10]. CMLI had many advantages than others, especially in reduced component, reduced power loss, reduced power stress, reduced frequency switching, reduced electromagnetic interference, increase voltage and power capability and increase power quality [1], [4], [5].…”

Section: Introductionmentioning

confidence: 99%

Universal Algorithm Control for Asymmetric Cascaded Multilevel Inverter

Sujanarko¹,

Ashari²,

Purnomo³

2010

IJCA

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Asymmetric Cascaded Multilevel Inverter (ACMLI) was widely studied. Various control strategies have been investigated. However, most of the reported control strategies not discussed how to determinate voltage levels, firing angle, switching-state and other parameters control design. This work was developed a universal algorithm to overcome the problems in the various number of H-Bridges and various DC voltages of ACMLI. The proposed algorithm based on combination theorem and matrix operation. The MATLAB computer program and simulation using MATLAB SIMULINK in the binary, trinary, equal interval, sine quantization and random DC voltage are the methods for verify the proposed algorithm. The results program execution and simulation in the single phase of ACMLI show that the proposed algorithm produces ACMLI control more accurate and faster if compared with previous control strategies. General TermsAlgorithms, Control, Power Electronics Keywords universal algorithm, asymmetric multilevel inverter, voltage levels, firing angle, switching-state.

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A novel switching strategy for improving modularity and manufacturability of cascaded-transformer-based multilevel inverters

Cited by 46 publications

References 5 publications

Improved Voltage of Cascaded Inverters Using Sine Quantization Progression

Improved Voltage of Cascaded Inverters Using Sine Quantization Progression

A New Family of Cascaded Transformer Six Switches Sub-Multilevel Inverter with Several Advantages

Universal Algorithm Control for Asymmetric Cascaded Multilevel Inverter

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