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1

Suresh, K., and E. Parimalasundar. "A Modified Multi Level Inverter With Inverted SPWM Control." IEEE Canadian Journal of Electrical and Computer Engineering 45, no. 2 (2022): 99–104. http://dx.doi.org/10.1109/icjece.2022.3150367.

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2

Rose, Maria K. J., Siny Paul, and Babu Paul. "A Comparative Study on Multi-Level Inverters Using SPWM." International Journal of Engineering Trends and Technology 54, no. 2 (2017): 112–17. http://dx.doi.org/10.14445/22315381/ijett-v54p216.

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3

Hussein, Taha Ahmed. "Multilevel level single phase inverter implementation for reduced harmonic contents." International Journal of Power Electronics and Drive Systems (IJPEDS) 12, no. 1 (2021): 314. http://dx.doi.org/10.11591/ijpeds.v12.i1.pp314-324.

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<p>Selective harmonic elimination technique SHE is adopted in this work to reduce the harmonic contents in single phase cascaded multilevel inverter. The firing instants for the electronic switches MOSFETs in the inverter are calculated off line for five level to thirteen level inverter. An Arduino microcontroller is programmed to cope with different topologies of the multilevel inverter. The implemented multi-level (MLI) inverter results are compared with Simulink simulation program and are found very close to each other. SHE technique works at system frequency (50 Hz or 60 Hz) and the
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4

Taha, A. Hussein. "Multilevel level single phase inverter implementation for reduced harmonic contents." International Journal of Power Electronics and Drive System (IJPEDS) 12, no. 1 (2021): 314–24. https://doi.org/10.11591/ijpeds.v12.i1.pp314-324.

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Selective harmonic elimination technique SHE is adopted in this work to reduce the harmonic contents in single phase cascaded multilevel inverter. The firing instants for the electronic switches MOSFETs in the inverter are calculated off line for five level to thirteen level inverter. An Arduino microcontroller is programmed to cope with different topologies of the multilevel inverter. The implemented multi-level (MLI) inverter results are compared with Simulink simulation program and are found very close to each other. SHE technique works at system frequency (50 Hz or 60 Hz) and the switching
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5

Aboub, H., R. Mechouma, B. Azoui, C. Labiod, and A. Khechekhouche. "A New Multicarrier Sinusoidal Pulse Width Modulation (SPWM) Strategy based on Rooted Tree Optimization (RTO) Algorithm for Reducing Total Harmonic Distortion (THD) of Switched-Capacitor Nine-level Inverter in Grid-connected PV systems." Indonesian Journal of Science and Technology 7, no. 1 (2021): 19–36. http://dx.doi.org/10.17509/ijost.v7i1.41716.

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This paper proposed a new strategy of sinusoidal pulse width modulation (SPWM) technique to control three-phase nine-level switched-capacitor inverter (9LSCI) in grid-connected PV systems. The main advantage of this inverter is high voltage gain, achieved by switching the capacitors in series and parallel to boost up the output voltage using low voltage input. To improve the quality of solar energy for injection into the electrical grid, a rooted tree optimization (RTO) algorithm is used to get optimum values of initial angles of multi carriers SPWM technique, giving the lowest possible values
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6

Hendawi, Essam. "Multi-Level Inverter Fed Induction Motors Based on Simplified and Efficient Modulation Techniques." International Journal of Electrical and Electronic Engineering & Telecommunications 12, no. 6 (2023): 395–404. http://dx.doi.org/10.18178/ijeetc.12.6.395-404.

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Speed control of three phase and single phase induction motors represents a very important issue in residential and industrial applications. This paper presents a voltage to frequency speed control of both single phase and three phase induction motors derived by multi-level inverters (MLIs). 15-level and 31-level multi-level inverters are considered. Both MLIs are operated by applying two proposed simplified and efficient modulation techniques in addition to the application of conventional multicarrier sinusoidal pulse width modulation technique MC-SPWM. The proposed modulation techniques over
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7

Juma'a, Hameed, and Thamir Atyia. "Design and Implementation of multi-level inverter for PV system with various DC Sources." NTU Journal of Renewable Energy 5, no. 1 (2023): 24–33. http://dx.doi.org/10.56286/ntujre.v5i1.554.

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Multilevel inverters (MLI) are now favored over conventional transformers due to higher output voltage levels and lower harmonic distortions. In this study, a 45-level and 39-level inverter with lower power switchgear number was constructed. The 16-switch single-phase MLI inverter is generated, simulated, and used realistically. The simulation system uses a control method called sinusoidal pulse width modulation (SPWM). The output voltage from the simulation includes total harmonic distortion (THD). THD values of 45 and 39 level output voltage simulation are 2.59% and 2.98% respectively. The s
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8

Mahmoud, Aref, Ahmed Ismaiel, and Oboskalov Vladislav. "Digital control strategy for SPWM MPPT of PV system with three-phase NPC three-level converter." Indonesian Journal of Electrical Engineering and Computer Science (IJEECS) 19, no. 2 (2020): 572–85. https://doi.org/10.11591/ijeecs.v19.i2.pp572-585.

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This paper is aimed at investigating MPPT of PV system controlled by SPWM which is generated by comparing sinusoidal wave with variable frequency sawtooth wave. Perturb and Observe (P&O) method is used for MPPT control of PV system. NPC three-phase three-level converter with LCL filter is designed to produce output voltage with minimum Total Harmonic Distortion (THD) and high efficiency. The simple and fast method to get MPP of PV system with variable irradiation is digital control where the maximum power point is obtained from look-up table for the values of optimum voltage that achieve t
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9

Shi, Li Ping, Zheng Da Wang, and Ya Jing Hu. "Study of Cascade Seven-Level Parallel Active Filter." Advanced Materials Research 433-440 (January 2012): 6038–42. http://dx.doi.org/10.4028/www.scientific.net/amr.433-440.6038.

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Multi-level inverter can output high voltage directly and can be connected without transformer, so it is applied more and more widely in high power situation. This paper presents a cascade H bridge seven-level parallel active power filter. This paper analyzes the principle of cascade H bridge multi-level inverter, designs a cascade H bridge seven-level SAPF based on CPS-SPWM, and the principle and the effect are simulated. The simulation results show that this system can compensate load harmonic current.
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10

Youssef, Babkrani, Mourad Gourmaj, Naddami Ahmed, Choukri Karim, and Hayani Mounir Sanaa. "Implementation of a modified carrier-based PWM technique for a cascaded MLI using DSP microcontroller." International Journal of Power Electronics and Drive Systems 14, no. 3 (2023): 1523~1533. https://doi.org/10.11591/ijpeds.v14.i3.pp1523-1533.

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A multi-level converter is a power electronic device desired to generate a desired AC voltage level using several introduced DC voltages, the output voltage of the converter is characterized by a low harmonic content (THD) compared to conventional inverters. The adopted innovative design permits the independent control of PV modules, enabling, in this way, to operate independently and won’t be very affected by intermittence. Additionally in this paper, a new control strategy based on sinusoidal pulse width modulation (SPWM) technique is analyzed for cascaded H-Bridge inverter. In this ne
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11

Yaseen, Farazdaq R., and Huthaifa Al-Khazraji. "Optimized Vector Control Using Swarm Bipolar Algorithm for Five-Level PWM Inverter-Fed Three-Phase Induction Motor." International Journal of Robotics and Control Systems 5, no. 1 (2024): 333–47. https://doi.org/10.31763/ijrcs.v5i1.1713.

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Induction motors (IMs) are commonly used in various applications such as robotics and automotive industries. This paper proposes an optimization of two proportional-integral (PI) controllers for a multi-level pulse width modulation (PWM) voltage-fed inverter linked to a three-phase IM. The paper aims to enhance inverter output quality, minimize harmonic distortion, and ensure robust, stable performance. The swarm bipolar algorithm (SBA) is introduced to elaborate the searching of the best settings of the PI controllers to achieve the desired response. Harmonics lead to increased system losses
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12

Babkrani, Youssef, Gourmaj Mourad, Ahmed Naddami, Karim Choukri, and Sanaa Hayani Mounir. "Implementation of a modified carrier-based PWM technique for a cascaded MLI using DSP microcontroller." International Journal of Power Electronics and Drive Systems (IJPEDS) 14, no. 3 (2023): 1523. http://dx.doi.org/10.11591/ijpeds.v14.i3.pp1523-1533.

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<p><span lang="EN-US">A multi-level converter is a power electronic device desired to generate a desired AC voltage level using several introduced DC voltages, the output voltage of the converter is characterized by a low harmonic content (THD) compared to conventional inverters. The adopted innovative design permits the independent control of PV modules, enabling, in this way, to operate independently and won’t be very affected by intermittence. Additionally in this paper, a new control strategy based on sinusoidal pulse width modulation (SPWM) technique is analyzed for cascaded H
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13

Chadli, Hajar, Sara Chadli, Mohamed Boutouba, Mohammed Saber, and Abdelwahed Tahani. "Hardware implementation and performance evaluation of microcontroller-based 7-level inverter using POD-SPWM technique." Indonesian Journal of Electrical Engineering and Computer Science 23, no. 1 (2021): 120–31. https://doi.org/10.11591/ijeecs.v23.i1.pp120-131.

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Renewable energy sources are considered as inexhaustible sources for the very long-term, as they come from natural processes that are constantly replenished. However, there are a number of challenges facing renewable energy technology adoption, like the grid connecting problems. One of the main challenges relates to the grid connecting problem is the power quality issues for power converter, such as harmonics, voltage stability, and frequency fluctuation. Hence, the inverter remains the first element to be built because of its undeniable advantages in alternative continuous conversion. However
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14

Xu, Jun Tao, Xi Geng Ma, Mao Zeng Lu, Chang Zhong Han, and Meng Liu. "Design of Control System Used for Cells Cascaded Multilevel Converter Based on TMS320F2407." Advanced Materials Research 566 (September 2012): 420–26. http://dx.doi.org/10.4028/www.scientific.net/amr.566.420.

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Because of its advantages, such as low input and output harmonics, high input power factor and efficiency, cells cascaded multi-level converter is widely used in the field of variable voltage and variable frequency control. Through the analysis of the multi-level converter’s structure and its PWM (Pulse Wavelength Modulation) control theory, a new structure of control system based on TMS320F2407 DSP was proposed. The control system structure and components of the central system and subsystem are given in this paper. SPWM control was achieved and multi-level PWM inverter output waveforms were p
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15

Aref, Mahmoud, Ismaiel Ahmed, and Vladislav Oboskalov. "Digital control strategy for SPWM MPPT of PV system with three-phase NPC three-level converter." Indonesian Journal of Electrical Engineering and Computer Science 19, no. 2 (2020): 572. http://dx.doi.org/10.11591/ijeecs.v19.i2.pp572-585.

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<p><span>This paper is aimed at investigating MPPT of PV system controlled by SPWM which is generated by comparing sinusoidal wave with variable frequency sawtooth wave. Perturb and Observe (P&O) method is used for MPPT control of PV system. NPC three-phase three-level converter with LCL filter is designed to produce output voltage with minimum Total Harmonic Distortion (THD) and high efficiency. The simple and fast method to get MPP of PV system with variable irradiation is digital control where the maximum power point is obtained from look-up table for the values of optim
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16

Lamreoua, Abdelhak, Anas Benslimane, Jamal Bouchnaif, and Ouariachi Mostafa El. "Optimized control of three-phase inverters to minimize total harmonic distortion in a grid-connected photovoltaic system." Optimized control of three-phase inverters to minimize total harmonic distortion in a grid-connected photovoltaic system 13, no. 4 (2022): 2255~2268. https://doi.org/10.11591/ijpeds.v13.i4.pp2255-2268.

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Currently, the energy transfer process to the grid of the PV system is based on the importance of less harmonics and high efficiency. The evaluation of harmonics distortion of current is based on the value of THDi (<<5%), this last becomes very high if the current leakage is high, which causes losses of the grid and safety problems. Therefore, our job is to improve the classic control method of PV inverters used to reduce grid loss and improve electricity prices. This study is a proposal toward the modelization and improvement of the three-phase two-level, and multi-level photovoltaic (P
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17

B., Jyothi, and Venu Gopala Rao M. "Performance Analysis of 3-Level 5-Phase Multilevel Inverter Topologies." International Journal of Electrical and Computer Engineering (IJECE) 7, no. 4 (2017): 1696–705. https://doi.org/10.11591/ijece.v7i4.pp1696-1705.

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Now a day"s many industrial applications requires high power. Some other appliances may require intermediate power either more or less depending upon their operation. With these consequences, MULTI LEVEL INVERTERS are introduced in 1975.for above intermediate voltage applications. The name MULTI LEVEL began with the three-level converter.By enormous advancement in power semiconductor switches, in electric drives increasing the phase number greater than the conventional three phase especially in locomotives, naval, aerospace, and electrical vehicles industry has many advantages than three phase
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18

Ananth, D. V. N. "Multi-level Inverters and Its Application of Statcom Using Svpwm and Spwm Techniques." IOSR Journal of Electrical and Electronics Engineering 2, no. 5 (2012): 30–38. http://dx.doi.org/10.9790/1676-0253038.

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19

Xiao, Gong*. "RESEARCH ON MODULATION STRATEGY OF CASCADED STATCOM BASED ON CPD-SPWM." INTERNATIONAL JOURNAL OF ENGINEERING SCIENCES & RESEARCH TECHNOLOGY 5, no. 6 (2016): 33–39. https://doi.org/10.5281/zenodo.54647.

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For multi-level structure , PWM technology is one very critical aspect, it relates to the quality and efficiency of the system output voltage cascaded STATCOM. Based on the principle of multiple modulation strategies analyzed and compared, including vertical carrier phase shift modulation, the carrier level phase shift modulation technique, the unipolar vertical multiplier carrier phase shifting CPD-SPWM technique as Cascaded STATCOM modulation techniques. Vertical carrier modulation technique can make STATCOM relatively low switching frequency to achieve a relatively high equivalent switching
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20

Srief, Mohamed Lamine, Belakehal Soltane, Nemmour Ahmed Lokmane, and Ghennai Malak. "A complete control structure based backstepping controller design for stacked multi-cell multi-level SPWM VSC STATCOM." Energy Reports 12 (December 2024): 687–98. http://dx.doi.org/10.1016/j.egyr.2024.06.051.

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21

C.R.Balamurugan, S.P.Natarajan, R.Bensra, and T.S.Anandhi. "PERFORMANCE EVALUATION ON UNIPOLAR PWM STRATEGIES FOR THREE PHASE DIODE CLAMPED MULTILEVEL INVERTER." International Journal of Soft Computing, Mathematics and Control (IJSCMC) 4, no. 2 (2022): 21. https://doi.org/10.5281/zenodo.6832228.

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This paper proposes different types of modulation methods for the Diode Clamped Multi Level Inverter (DCMLI). In this paper, a DCMLI is controlled with Sinusoidal PWM technique (SPWM), Third Harmonic Injection PWM technique, Sixty degree PWM technique and Stepped wave technique with Sub harmonic (SHPWM), Carrier Overlapping (CO), Phase shift (PS) , Variable frequency (VF) and the variation of Total Harmonic Distortion (THD) in their outputs are observed and also chosen inverter is controlled by SPWM technique, THI PWM technique, Sixty degree PWM and Stepped wave technique by varying the modula
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22

Jyothi, B., and M. Venu Gopala Rao. "Performance Analysis of 3-Level 5-Phase Multilevel Inverter Topologies." International Journal of Electrical and Computer Engineering (IJECE) 7, no. 4 (2017): 1696. http://dx.doi.org/10.11591/ijece.v7i4.pp1696-1705.

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Now a day’s many industrial applications requires high power. Some other appliances may require intermediate power either more or less depending upon their operation. With these consequences, MULTI LEVEL INVERTERS are introduced in 1975.for above intermediate voltage applications. The name MULTI LEVEL began with the three-level converter.By enormous advancement in power semiconductor switches, in electric drives increasing the phase number greater than the conventional three phase especially in locomotives, naval, aerospace, and electrical vehicles industry has many advantages than three phase
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23

Venkateshwarlu, Dr S., N. Koushik, V. Ravi Prasad, and Ch Sai Karthik. "Comparative Analysis of 5-Level and 7-Level Single-Phase Cascaded H-bridge Multilevel Inverters." CVR Journal of Science and Technology 26, no. 1 (2024): 54–61. http://dx.doi.org/10.32377/cvrjst2609.

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The demand for high-performance, efficient, and reliable power electronic systems has been steadily increasing in various industrial applications, including renewable energy systems, electric vehicles, and smart grids. In response to this demand, the Cascaded H-Bridge Multi-level Inverter (CHB-MLI) has emerged as a promising solution, offering advantages such as improved voltage waveform quality, reduced harmonic distortion, and enhanced power handling capabilities. The CHB-MLI is characterized by its modular structure, comprising multiple H-bridge cells cascaded in series. Each H-bridge cell
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24

Pawar, Nitin, Vijay Kumar Tayal, and Pallavi Choudekar. "Design of Flying Capacitor Multilevel Inverter for Solar Energy Applications." E3S Web of Conferences 184 (2020): 01035. http://dx.doi.org/10.1051/e3sconf/202018401035.

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The continuous rise in electricity demand leads to adoption of renewable energy sources such as sun, wind for power generation. In order to utilize the electric power obtained from renewable solar energy, inverters are required to inject the electricity into the grid. This paper presents single phase flying capacitor multi-level inverter with help of SPWM technique. The comparison of single phase three-level, five-level and seven-level flying capacitor multilevel inverters is carried out with respect to waveform pattern, output current, output voltage, active power and reactive power waveforms
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25

Ezhilvannan, Parimalasundar, and Suresh Krishnan. "An Efficient Asymmetric Direct Current (DC) Source Configured Switched Capacitor Multi-level Inverter." Journal Européen des Systèmes Automatisés 53, no. 6 (2020): 853–59. http://dx.doi.org/10.18280/jesa.530611.

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This paper is dealing about Switched Capacitor Multi-Level Inverter (SCMLI) circuit which is controlled by triangular multicarrier Sinewave Pulse Width Modulation (SPWM) technique. The proposed SCMLI is powered from asymmetric DC source configuration to obtain multi-level output voltage by applying switching pulse to the main circuit from control circuit for switching operation. Fourteen switches and four capacitors are employing to do the proposed inversion operation in an effective way. Switching capacitors can perform boost operation to enhance voltage from the source level to the required
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26

D. Teryima, Kureve, Goshwe Y. Nentawe, and Agbo O. David. "A Overlapping Carrier Based SPWM for a 5-Level Cascaded H-bridge Multilevel Inverter." International Journal of Power Electronics and Drive Systems (IJPEDS) 7, no. 2 (2016): 349. http://dx.doi.org/10.11591/ijpeds.v7.i2.pp349-357.

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This paper proposes a switching control for a cascaded H-bridge inverter structure with reduced switches which is used to improve the THD performance of a single phase five level CHB MLI. The multi level inverter is simulated for the conventional carrier overlapping APOD and the proposed carrier overlapping APOD Pulse Width Modulation (PWM) switching control technique. The total harmonic distortion (THD) of the output voltages are observed for both PWM control techniques. The performance of the symmetric CHB MLI is simulated using MATLAB-SIMULINK. It is observed that the proposed carrier overl
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27

D. Teryima, Kureve, Goshwe Y. Nentawe, and Agbo O. David. "A Overlapping Carrier Based SPWM for a 5-Level Cascaded H-bridge Multilevel Inverter." Indonesian Journal of Electrical Engineering and Computer Science 1, no. 2 (2016): 221. http://dx.doi.org/10.11591/ijeecs.v1.i2.pp221-228.

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<p>This paper proposes a switching control for a cascaded H-bridge inverter structure with reduced switches which is used to improve the THD performance of a single phase five level CHB MLI. The multi level inverter is simulated for the conventional carrier overlapping APOD and the proposed carrier overlapping APOD Pulse Width Modulation (PWM) switching control technique. The total harmonic distortion (THD) of the output voltages are observed for both PWM control techniques. The performance of the symmetric CHB MLI is simulated using MATLAB-SIMULINK. It is observed that the proposed carr
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28

Bhukya, Ravikumar, and P. Satish Kumar. "Analysis and Implementation of Unipolar PWM Strategies for Three Phase Cascade Multilevel Inverter Fed Induction Motor Drive." International Journal of Advances in Applied Sciences 7, no. 3 (2018): 245. http://dx.doi.org/10.11591/ijaas.v7.i3.pp245-254.

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This paper presents unipolar pulse width modulation technique with sinusoidal sampling pulse width modulation are analyzed for three-phase five-level, seven-level, nine-level and eleven-level cascaded multi-level inverter. The unipolar PWM method offers a good opportunity for the realization of the Three-phase inverter control, it is better to use the unipolar PWM method with single carrier wave compared to two reference waves. In such case the motor harmonic losses will be considerably lower.The necessary calculations for generation of unipolar pulse width modulation strategies have presented
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Ravikumar, Bhukya, and Satish Kumar P. "Analysis and Implementation of Unipolar PWM Strategies for Three Phase Cascade Multilevel Inverter Fed Induction Motor Drive." International Journal of Advances in Applied Sciences (IJAAS) 7, no. 3 (2018): 245–54. https://doi.org/10.11591/ijaas.v7.i3.pp245-254.

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This paper presents unipolar pulse width modulation technique with sinusoidal sampling pulse width modulation are analyzed for three-phase five-level, seven-level, nine-level and eleven-level cascaded multi-level inverter. The unipolar PWM method offers a good opportunity for the realization of the Three-phase inverter control, it is better to use the unipolar PWM method with single carrier wave compared to two reference waves. In such case the motor harmonic losses will be considerably lower.The necessary calculations for generation of unipolar pulse width modulation strategies have presented
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., Vivek Saini, Nikhil Kumar Nigam, and Joginder Singh. "Harmonic Analysis of Various SPWM Techniques for three Phase Diode Clamped Multi-Level Inverter in MATLAB/Simulink Environment." International Journal of Advance Research and Innovation 5, no. 3 (2017): 53–58. http://dx.doi.org/10.51976/ijari.531709.

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With advances in solid-state power electronic devices and microprocessors, various pulse-width-modulation (PWM) techniques have been developed for industrial applications. For example, PWM-based three-phase voltage source inverters (VSI) convert DC power to AC power with variable voltage magnitude and variable frequency. This paper discusses the advantages and drawbacks of three different PWM techniques: the sinusoidal PWM(SPWM) technique, the third-harmonic-injection PWM(THIPWM) technique, and the bus-clamped PWM (BCPWM) technique. These three methods are compared by discussing their ease of
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31

Abdelhak, Lamreoua, Benslimane Anas, Bouchnaif Jamal, and El Ouariachi Mostafa. "Optimized control of three-phase inverters to minimize total harmonic distortion in a grid-connected photovoltaic system." International Journal of Power Electronics and Drive Systems (IJPEDS) 13, no. 4 (2022): 2255. http://dx.doi.org/10.11591/ijpeds.v13.i4.pp2255-2268.

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Currently, the energy transfer process to the grid of the PV system is based on the importance of less harmonics and high efficiency. The evaluation of harmonics distortion of current is based on the value of THDi (<<5%), this last becomes very high if the current leakage is high, which causes losses of the grid and safety problems. Therefore, our job is to improve the classic control method of PV inverters used to reduce grid loss and improve electricity prices. This study is a proposal toward the modelization and improvement of the three-phase two-level, and multi-level photovo
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32

Maheswari, M., and S. Thangavel. "Hardware realization of DVR with 27 level multi carrier PWM based MLI." International Journal of Engineering & Technology 7, no. 3.29 (2018): 26. http://dx.doi.org/10.14419/ijet.v7i3.29.18455.

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The quality of the electrical power delivered to consumers is heavily affected by the power electronics based controllers, introduced in both domestic and industrial sectors, which in turn results in malfunctioning of equipment or eventual damage. Series compensators, Shunt compensators and series-shunt compensators are some of the strategies applied to address the power quality issues effectively. In this work a series compensating device, viz. 27 level-cascaded multilevel inverter based Dynamic Voltage Restorer (DVR) with multicarrier SPWM technique is proposed to mitigate voltage swells and
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33

Sreelakshmi, Sanka, Machineni Sanjeevappa Sujatha, and Jammy Ramesh Rahul. "Multi-level inverter with novel carrier pulse width modulation technique for high voltage applications." Indonesian Journal of Electrical Engineering and Computer Science 26, no. 2 (2022): 667–74. https://doi.org/10.11591/ijeecs.v26.i2.pp667-674.

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The present work deals with multilevel inverters (MLI) with modified carrier pulse width modulation technique and its application, especially in solarbased applications due to its modularity in structure and suitability for medium or high-power applications. Several multilevel inverters are introduced for various applications. One of the drawbacks of these inverters is high total harmonic distortion (THD) value in the output which impacts the power quality. The main objective of this work is to improve the power quality, thereby increasing the life and performance of the overall system at the
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Meesala, Venkateswarlu, Satheesh Gopisetti, and Sujatha Peddokotla. "Modified SPWM technique for single phase variable voltage nine level inverter for PV system." Modified SPWM technique for single phase variable voltage nine level inverter for PV system 14, no. 4 (2023): 2179–82. https://doi.org/10.11591/ijpeds.v14.i4.pp2173-2182.

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Multilevel inverters are widely popular because they boost the overall staging of the network with low harmonic distortion, less strain, and simply create highest possible development in industrial and electrical vehicle applications. Here a hybrid multilevel inverter having few switches compare to traditional multi-level inverters has been implemented. It has the capability to operate as a 3-level, 5-level, 7-level and 9-level inverter with different magnitudes of output voltage by varying the modulation index without changing of circuit topology and switching sequences. A new variable amplit
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Venkateswarlu, Meesala, Goppisetty Sateesh, and Peddakotla Sujatha. "Modified SPWM technique for single phase variable voltage nine level inverter for PV system." International Journal of Power Electronics and Drive Systems (IJPEDS) 14, no. 4 (2023): 2173. http://dx.doi.org/10.11591/ijpeds.v14.i4.pp2173-2182.

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<span lang="EN-US">Multilevel inverters are widely popular because they boost the overall staging of the network with low harmonic distortion, less strain, and simply create highest possible development in industrial and electrical vehicle applications. Here a hybrid multilevel inverter having few switches compare to traditional multi-level inverters has been implemented. It has the capability to operate as a 3-level, 5-level, 7-level and 9-level inverter with different magnitudes of output voltage by varying the modulation index without changing of circuit topology and switching sequenc
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Sreelakshmi, Sanka, Machineni Sanjeevappa Sujatha, and Jammy Ramesh Rahul. "Multi-level inverter with novel carrier pulse width modulation technique for high voltage applications." Indonesian Journal of Electrical Engineering and Computer Science 26, no. 2 (2022): 667. http://dx.doi.org/10.11591/ijeecs.v26.i2.pp667-674.

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<span>The present work deals with multilevel inverters (MLI) with modified carrier pulse width modulation technique and its application, especially in solar-based applications due to its modularity in structure and suitability for medium or high-power applications. Several multilevel inverters are introduced for various applications. One of the drawbacks of these inverters is high total harmonic distortion (THD) value in the output which impacts the power quality. The main objective of this work is to improve the power quality, thereby increasing the life and performance of the overall s
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Kishore, B., Senbakaraj, Periyasamy, and Poongkabilan. "THD Reduction in Multi-Level Inverters based on Multicarrier Pulse Width Modulation Technique." International Journal of Engineering and Advanced Technology (IJEAT) 9, no. 4 (2020): 1970–77. https://doi.org/10.35940/ijeat.D8994.049420.

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Due to the advent of technology, electronic equipments are much more sensitive to harmonic and its analysis play an important role whereby reducing the distortion due to harmonics needs attention. To meet the requirements of the industries, harmonic free-high rating power sources are in high demand. Total Harmonic Distortion (THD) is an indicator of AC voltage source quality. In case of inverters, one such way to reduce THD would be the use of Pulse Width Modulation (PWM). The existing methods mainly use the low frequency pulse width modulation techniques for the switching. Control methods emp
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D.Mohan, D. Mohan, and Sreejith B.Kurub. "A Comparative Analysis of Multi Carrier SPWM Control Strategies using Fifteen Level Cascaded H bridge Multilevel Inverter." International Journal of Computer Applications 41, no. 21 (2012): 7–11. http://dx.doi.org/10.5120/5822-7872.

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CHENNAI, SALIM. "NOVEL SHUNT ACTIVE POWER FILTER BASED ON NINE-LEVEL NPC INVERTER USING MC-LSPWM MODULATION STRATEGY." REVUE ROUMAINE DES SCIENCES TECHNIQUES — SÉRIE ÉLECTROTECHNIQUE ET ÉNERGÉTIQUE 69, no. 1 (2024): 21–26. http://dx.doi.org/10.59277/rrst-ee.2024.1.4.

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This paper presents a novel shunt active power filter (Shunt APF) system based on a nine-level neutral point clamped (NPC) inverter, which can reduce current harmonics under various nonlinear loads. These loads can introduce harmonic currents within the system, which causes excessive power losses and alters the voltage systems' characteristics. Today, multi-level inverters are more suitable for high-voltage applications; their advantages are low harmonic distortions, low switching losses, low electromagnetic interference, and low acoustic noise. The reference signals required to compensate har
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M, Vikram Goud M. Sarita Reddy. "MULTILEVEL CONTROL STRATEGY FOR INDUCTION MOTOR USING PV-BATTERY STANDALONE SYSTEM." INTERNATIONAL JOURNAL OF ENGINEERING SCIENCES & RESEARCH TECHNOLOGY 6, no. 8 (2017): 139–48. https://doi.org/10.5281/zenodo.839145.

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The paper presents a scheme that is used to enhance the capacity of the PV cell along with standalone battery used to feed the induction motor drive. The power capacity is increased by using 9-level inverter and its is almost equal for the cases of Neutral Point Clamped Multi level inverter and Cascade –H –Bridge inverter. Since the power level remains same for the above mentioned topologies, here main focus is on the THD content for the different topologies.
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Foti, Salvatore, Giacomo Scelba, Antonio Testa, and Angelo Sciacca. "An Averaged-Value Model of an Asymmetrical Hybrid Multi-Level Rectifier." Energies 12, no. 4 (2019): 589. http://dx.doi.org/10.3390/en12040589.

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The development and the validation of an averaged-value mathematical model of an asymmetrical hybrid multi-level rectifier is presented in this work. Such a rectifier is composed of a three-level T-type unidirectional rectifier and of a two-level inverter connected to an open-end winding electrical machine. The T-type rectifier, which supplies the load, operates at quite a low switching frequency in order to minimize inverter power losses. The two-level inverter is instead driven by a standard sinusoidal pulse width modulation (SPWM) technique to suitably shape the input current. The two-level
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Rao, Y. V. Balarama Krishna, Venkata Koteswara Rao N., and Raja Sathish Kumar. "Multilevel Inverter with Enhanced THD Value used in Grid Connected Applications." WSEAS TRANSACTIONS ON POWER SYSTEMS 19 (April 2, 2024): 115–21. http://dx.doi.org/10.37394/232016.2024.19.14.

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In this work, the relationships among pulse width modulation (PWM), sinusoidal pulse width modulation (SPWM), and space-vector pulse width modulation (SVPWM) for three-phase inverters will be analyzed to better comprehend their differences. detailed comparison of the three modulation schemes under study’s Total Harmonic Distortion (THD). High-power applications are increasingly concentrating on converter technology. This growing importance may be attributed to its improved output waveforms over the 3- carrier-based sinusoidal pulse width modulation (SPWM). To control and modulate multi-level i
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Sridhar, Babu Gurijala, S. Srikanth Ramchandra Nittala K, and Rohit Reddy G. "Transmission system regularization with 5-level cascaded IPFC." International Journal of Power Electronics and Drive System (IJPEDS) 10, no. 3 (2019): 1437–45. https://doi.org/10.11591/ijpeds.v10.i3.pp1437-1445.

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In recent years, there is an immensely huge demand to power due to industrialization and modernization, butcorrespondingly the amplification of generation and transmission has not been done due to constrained resources and environmental limitations. The huge growth in demand lead to various problems in power systems. Heavy growth in semiconductor technology made power electronics play a key role in solving these problems. Flexible AC transmission system (FACTS) devices are used for fixing various problems in power system. They are used for enhancing the existing transmission capabilities and i
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N.Eashwaramma et al.,, N. Eashwaramma et al ,. "Reduced Number of Power Switches in Multi level Inverter Using SPWM Technique to Mitigate For SAG and SWELL." International Journal of Applied Engineering Research and Development 8, no. 1 (2018): 1–10. http://dx.doi.org/10.24247/ijaerdfeb20181.

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N.Eashwaramma et al.,, N. Eashwaramma et al ,. "Reduced Number of Power Switches in Multi level Inverter Using SPWM Technique to Mitigate For SAG and SWELL." International Journal of Applied Engineering Research and Development 8, no. 1 (2018): 1–10. http://dx.doi.org/10.24247/ijaerdjun201801.

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R, Palanisamy. "Hysteresis Control 3-Level SI-NPC Inverter with Wind Energy System." International Journal of Power Electronics and Drive Systems (IJPEDS) 8, no. 4 (2017): 1764. http://dx.doi.org/10.11591/ijpeds.v8.i4.pp1764-1770.

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The system is a 3-level Neutral point clamped hysteresis current controlled Inverter with Wind energy as power source. The input DC Power for the multi-level inverter is drawn from wind turbine generator connected through a rectifier circuit. An inductor has been introduced for smoothening the DC output from the rectifier. The inverter uses Neutral Point Clamped topology. The switching pulses for the inverter are achieved by hysteresis current control technique. This system is advantageous over the conventional SPWM based system as the hysteresis current control allows to reduce the low freque
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Gurijala, Sridhar Babu, K. S. Srikanth, Ramchandra Nittala, and G. Rohit Reddy. "Transmission system regularization with 5-level cascaded IPFC." International Journal of Power Electronics and Drive Systems (IJPEDS) 10, no. 3 (2019): 1437. http://dx.doi.org/10.11591/ijpeds.v10.i3.pp1437-1445.

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<p class="JESAbstract">In recent years, there is an immensely huge demand to power due to industrialization and modernization, butcorrespondingly the amplification of generation and transmission has not been done due to constrained resources and environmental limitations. The huge growth in demand leads to various problems in power systems. Heavy growth in semiconductor technology made power electronics plays a key role in solving these problems. Flexible AC transmission system (FACTS) devices are used for fixing various problems in power system. They are used for enhancing the existing
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Nguyen-Van, Triet, Rikiya Abe, and Kenji Tanaka. "Digital Adaptive Hysteresis Current Control for Multi-Functional Inverters." Energies 11, no. 9 (2018): 2422. http://dx.doi.org/10.3390/en11092422.

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This paper proposes a digital adaptive hysteresis current control method for multi-functional inverters in a power-flow control device called digital grid router. Each inverter can be controlled in master, grid-connected, or stand-alone modes, which can be specified by the controller. While the popular linear sine-triangle pulse width modulation (SPWM) control technique requires complicated proportional-integral (PI) regulators with an unavoidable time delay, hysteresis current control has a simple structure, fast responses, and robustness due to its independent system of parameters. Since the
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Sivakumar, N., and A. Sumathi. "Fuzzy Logic Controller for Cascaded H-Bridge Multilevel Inverter." IAES International Journal of Artificial Intelligence (IJ-AI) 4, no. 3 (2015): 105. http://dx.doi.org/10.11591/ijai.v4.i3.pp105-112.

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This paper proposes fuzzy logic controller based seven-level hybrid inverter for photovoltaic systems with sinusoidal pulse width-modulation (SPWM) techniques. Multi-Level Inverter technology have been developed in the area of high-power medium-voltage energy scheme, because of their advantages such as devices of high dv/dt rating, higher switching frequency, unlimited power processing, shape of output waveform and desired level of output voltage, current and frequency adjustment.This topology can be used there by enabling the scheme to reduce the Total Harmonic Distortion (THD) for high volta
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Lamreoua, Abdelhak, Benslimane Anas, Jamal Bouchnaif, and El Ouariachi Mostafa. "Single-phase transformerless inverter topologies at different levels for a photovoltaic system, with proportional resonant controller." International Journal of Electrical and Computer Engineering (IJECE) 13, no. 2 (2023): 1410–22. https://doi.org/10.11591/ijece.v13i2.pp1410-1422.

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In this paper, we have studied the topologies of single-phase transformerless inverters with different levels using a proportional-integral-resonant (PIR) AC controller, and the multi-level cascade inverter topology with sinusoidal pulse with modulation (SPWM) control in an open and closed loop. To ensure that these photovoltaic inverters can inject a defined amount of reactive power into the grid according to international regulations. Therefore, precise monitoring of the mains voltage vector by a phase-locked loop (PLL) system is applied to ensure the proper functioning of this system. For i
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