Advanced Cascade Multilevel Converter with Reduction in Number of Components

Ajami, Ali; Oskuee, Mohammad Reza Jannati; Mokhberdoran, Ataollah; Khosroshahi, Mahdi Toupchi

doi:10.5370/jeet.2014.9.1.127

Cited by 18 publications

(9 citation statements)

References 13 publications

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“…This paper presents a novel topology for the symmetrical multilevel inverter using a multi-output fly back converter but the bidirectional switches and gate driver circuits' count is very high (Noman et al, 2016;Sangeetha et al, 2016). This topology uses a single DC source which can be from renewable energy sources or energy storage devices (Ajami et al, 2014). The DC input is given to the multiple output fly back converter.…”

Section: Brief Literature Surveymentioning

confidence: 99%

An Improved Response of Multi Level Inverter Based PR Controlled SMPS

Sasikala

Krishnakumar

2020

Front. Energy Res.

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This paper mainly focuses on identifying an optimum controller for Multi Level Inverter Based Switched Mode Power Supply (MLIBSMPS) for constant voltage applications. Generally, there is a greater demand of constant voltage for the sensitive loads. A closed loop control is introduced in the circuit in order to obtain constant voltage quickly if there are any disturbances occur at the input side. In this paper, closed loop Proportional Integral (PI) as well as Proportional Resonant (PR) controlled MLI based SMPS systems are simulated and the comparison of their performance is done. It is seen that an acceptable performance is achieved using PR controlled MLI based SMPS than PI Controlled MLI based SMPS. It also proves that PR Controlled SMPS with 7 level inverters has reduced steady state error and improved time domain response as compared to PI Controlled SMPS.Keywords: multi level inverter based switched mode power supply (MLIBSMPS), proportional integral controller (PIC), dynamic response, proportional resonant controller (PRC), steady state error

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Section: Brief Literature Surveymentioning

confidence: 99%

An Improved Response of Multi Level Inverter Based PR Controlled SMPS

Sasikala

Krishnakumar

2020

Front. Energy Res.

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“…Three-phase voltage source inverters (VSIs) with proportional-integral (PI) control methods with distinct pulse width modulation (PWM) blocks have been popularly used to provide output currents with controllable amplitude and controllable frequency [1][2][3][4][5][6][7][8]. In the VSI, common-mode voltages generated by the fast switching operation have been known to give rise to overvoltage stress to the winding insulation of drives and to conduct or radiate electromagnetic interference, which can affect the functionality of other electronic systems in the vicinity [9].…”

Section: Introductionmentioning

confidence: 99%

Model Predictive Control Methods to Reduce Common-Mode Voltage for Three-Phase Voltage Source Inverters

Kwak

Mun

2015

IEEE Trans. Power Electron.

154

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In this paper, we propose model predictive control methods to reduce the common-mode voltage of three-phase voltage source inverters (VSIs). In the reduced common-mode voltage-model predictive control (RCMV-MPC) methods proposed in this paper, only nonzero voltage vectors are utilized to reduce the common-mode voltage as well as to control the load currents. In addition, two nonzero voltage vectors are selected from the cost function at every sampling period, instead of using only one optimal vector during one sampling period. The two selected nonzero vectors are distributed in one sampling period in such a way as to minimize the error between the measured load current and the reference. Without utilizing the zero vectors, the common-mode voltage controlled by the proposed RCMV-MPC algorithms can be restricted within ±V dc /6. Furthermore, application of the two nonzero vectors with optimal time sharing between them can yield satisfactory load current ripple performance without using the zero vectors. Thus, the proposed RCMV-MPC methods can reduce the common-mode voltage as well as control the load currents with fast transient response and satisfactory load current ripple performance compared with the conventional model predictive control method. Simulation and experimental results are included to verify the effectiveness of the proposed RCMV-MPC methods.Index Terms -Predictive control, common-mode voltage, current control, voltage source inverter. 0885-8993 (c) reference, the current controller evaluates all the predicted current values obtained by the seven possible states to select one optimal switching state with the smallest cost value. Finally, the VSI with the model predictive controller applies the optimal switching state during the entire sampling period of the controller. Because of its simplicity with no requirement of individual PWM blocks as well as its control flexibility, the model predictive control scheme has been employed to control the load currents of power converters other than VSIs, such as multilevel inverters, multiphase inverters, active power filters, and matrix converters [14][15][16][17][18][19][20][21][22][23][24][25][26].This paper proposes two reduced common-mode voltage-model predictive control (RCMV-MPC) methods to reduce the common-mode voltage of three-phase VSIs on the basis of the model predictive control method. In the proposed RCMV-MPC methods, only six nonzero VSI states are considered to perform model predictive control to reduce the common-mode voltage by avoiding the zero vectors. Furthermore, the proposed methods utilize two nonzero voltage states in one sampling period in order to compensate for the reduced number of voltage states, instead of using only one optimal vector during one sampling period as in the conventional method. The two selected active vectors are distributed within the sampling period in such a way as to minimize the squared current errors between the reference and actual future load currents in the proposed methods. Therefore, the common-mode volta...

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“…A new technology of an improved PWM topology for chopper-cell-based modular multilevel converters is established in [19]. A latest converter configuration based on cascaded converter family unit is offered [20]. The recommended multilevel highly developed cascaded converter has settlement such as lessening in number of power semiconductor switches and its losses [20].…”

Section: Introductionmentioning

confidence: 99%

Asymmetric Three-Phase Cascading Trinary-DC Source Multilevel Inverter Topologies for Variable Frequency PWM

Irusapparajan¹,

Periyaazhagar²

2016

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Asymmetric three-phase cascading Trinary-DC source Multilevel Inverter which can achieve reduced harmonics and superior root mean square (RMS) values of the output voltage is proposed. This topology can achieve cascaded full bridge inverter operation with dissimilar (unequal) DC Source and it is fired by using variable frequency pulse with modulation technique as a switching strategy. This pulse width modulation switching strategy has a newly adopted multicarrier single reference technique. The performance parameter factors like Form Factor (FF), Crest Factor (CF), Total Harmonic Distortion (THD) and fundamental RMS output voltage (V RMS) are estimated by using proposed asymmetrical three-phase cascading multilevel inverter for several modulation indices (0.8-1). The research study carries with MATLAB/SIMULINK based simulation and experimental results obtained using appropriate prototype (test board) to prove the viability of the proposed concept.

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Advanced Cascade Multilevel Converter with Reduction in Number of Components

Cited by 18 publications

References 13 publications

An Improved Response of Multi Level Inverter Based PR Controlled SMPS

An Improved Response of Multi Level Inverter Based PR Controlled SMPS

Model Predictive Control Methods to Reduce Common-Mode Voltage for Three-Phase Voltage Source Inverters

Asymmetric Three-Phase Cascading Trinary-DC Source Multilevel Inverter Topologies for Variable Frequency PWM

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