Low Switching Frequency Based Asymmetrical Multilevel Inverter Topology With Reduced Switch Count

Siddique, Marif Daula; Mekhilef, Saad; Shah, Noraisyah Mohamed; Sarwar, Adil; Iqbal, Atif; Tayyab, Mohammad; Ansari, Mohsin Karim

doi:10.1109/access.2019.2925277

Cited by 139 publications

(92 citation statements)

References 34 publications

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“…Since the power losses of the power semiconductor, including the conduction and switching losses are the major contributors to the rectifier losses, the total losses only take the semiconductor power losses into consideration in the following discussion. Analysis in this section will be implemented by PLECS software on the power loss distribution of the power semiconductors and the efficiency comparison in the four types of topologies as shown in Section 2, since PLECS software has been widely used in simulation on power electronics losses, on the basis of the component datasheet [23][24][25].…”

Section: Power Losses and Efficiency-based Evaluationmentioning

confidence: 99%

Evaluation and Comprehensive Comparison of H-Bridge-Based Bidirectional Rectifier and Unidirectional Rectifiers

et al. 2020

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This paper presents an evaluation and comprehensive comparison for the topologies which are applied to the front stage of transformer-less cascaded multilevel converter (TCMC). The topologies investigated are targeted at the bidirectional cascaded H-bridge rectifier and three unidirectional rectifiers, including the diode H-bridge cascaded boost rectifier, cascaded bridgeless rectifier and cascaded VIENNA rectifier. First, the operation principles of the unidirectional rectifiers are discussed. Then the performances of these topologies such as power losses, efficiency, device current stress, cost, and total harmonic distortions are analyzed and evaluated respectively. Finally, advantages and disadvantages for each topology are discussed and highlighted. The evaluation and comparison methods presented in this paper and their results are feasible and effective for selecting the appropriate topology in practical applications under different operating conditions.

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Section: Power Losses and Efficiency-based Evaluationmentioning

confidence: 99%

Evaluation and Comprehensive Comparison of H-Bridge-Based Bidirectional Rectifier and Unidirectional Rectifiers

et al. 2020

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“…In CHB MLI all DC sources are considered to be identical since all of them are either fuel cells or PV arrays and batteries etc. [8,21]. It requires less no.…”

Section: Reduced Switch Multilevel Inverter (Rs Mli)mentioning

confidence: 99%

Reduced switches multilevel inverter integration with boost converters in photovoltaic system

2019

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Multilevel inverters (MLIs) are developed to meet medium voltage and high power applications in flexible power systems. The conventional configuration of multilevel inverter requires more switches and has limitation to its wide range application. This paper reports the performed work on 1-phase 7-level reduced switch multilevel inverter (RS MLI) in photovoltaic (PV) system. RS MLI configuration integration with PV system which uses less number of switching components for specified number of voltage output levels as compared to that of conventional multilevel inverter topology. To performed enhanced operation of PV cells and maximize the solar energy extraction an incremental conductance based maximum power point tracking scheme is used. To improve the quality of RS MLI output parameters mainly total harmonic distortion and switching losses, selected harmonic elimination based genetic algorithm method is consider for control the gating pulse of PV based RS MLI. This work is performed using MATLAB/SIMULINK software. Keywords Reduced switch multilevel inverter (RS MLI) • Maximum power point tracking (MPPT) • Incremental conductance (IC) • Genetic algorithm (GA) • Total harmonic distortion (THD)

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“…Therefore, conventional MLI is not suitable for voltage levels beyond five [8]. A large number of modified/hybrid conventional topologies that were proposed required a large number of power semiconductor switches for the generation of higher voltage levels [9]. Each switch requires a separate driver circuit and heat sink.…”

Section: Introductionmentioning

confidence: 99%

Realization of a Generalized Switched-Capacitor Multilevel Inverter Topology with Less Switch Requirement

et al. 2020

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Conventional multilevel inverter topologies like neutral point clamped (NPC), flying capacitor (FC), and cascade H bridge (CHB) are employed in the industry but require a large number of switches and passive and active components for the generation of a higher number of voltage levels. Consequently, the cost and complexity of the inverter increases. In this work, the basic unit of a switched capacitor topology was generalized utilizing a cascaded H-bridge structure for realizing a switched-capacitor multilevel inverter (SCMLI). The proposed generalized MLI can generate a significant number of output voltage levels with a lower number of components. The operation of symmetric and asymmetric configurations was shown with 13 and 31 level output voltage generation, respectively. Self-capacitor voltage balancing and boosting capability are the key features of the proposed SCMLI structure. The nearest level control modulation scheme was employed for controlling and regulating the output voltage. Based on the longest discharging time, the optimum value of capacitance was also calculated. A generalized formula for the generation of higher voltage levels was also derived. The proposed model was simulated in the MATLAB®/Simulink 2016a environment. Simulation results were validated with the hardware implementation.

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Low Switching Frequency Based Asymmetrical Multilevel Inverter Topology With Reduced Switch Count

Cited by 139 publications

References 34 publications

Evaluation and Comprehensive Comparison of H-Bridge-Based Bidirectional Rectifier and Unidirectional Rectifiers

Evaluation and Comprehensive Comparison of H-Bridge-Based Bidirectional Rectifier and Unidirectional Rectifiers

Reduced switches multilevel inverter integration with boost converters in photovoltaic system

Realization of a Generalized Switched-Capacitor Multilevel Inverter Topology with Less Switch Requirement

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