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Journal articles on the topic 'Neutral Point Clamped (NPC) Converter'

Author: Grafiati

Published: 21 April 2022

Last updated: 18 July 2025

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1

Hussain, Shafquat, Simone Cosso, Massimiliano Passalacqua, Luis Ramon Vaccaro, Andrea Formentini, and Mario Marchesoni. "Efficiency Performance of 7-Level Multiplexed and 3-Level Neutral Point Clamped (NPC) Converters." Energies 18, no. 9 (2025): 2161. https://doi.org/10.3390/en18092161.

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In medium-voltage AC applications, multilevel converters are essential due to their ability to achieve high efficiency and significantly reduce total harmonic distortion (THD), ensuring improved performance and power quality. This paper presents a detailed analysis of the efficiency, power loss, and THD characteristics of multiplexed multilevel converters and neutral point clamped converters. Using MATLAB®Simulink 2024b, the switching and conduction losses of both multiplexed multilevel converters and NPC converters are calculated. The three-level NPC converter offers advantages of a simpler d

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Mlodzikowski, Pawel, Adam Milczarek, and Mariusz Malinowski. "Application of Simplified Neutral Point Clamped Multilevel Converter in a Small Wind Turbine." Electrical, Control and Communication Engineering 5, no. 1 (2014): 5–10. http://dx.doi.org/10.2478/ecce-2014-0001.

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Abstract In low power distributed generation systems low cost together with the energy quality requirements are a key element. It is known that quality of voltage waveforms generated from multilevel converters is better in comparison with those from two-level. Due to advancements in power electronics and microcontrollers, multilevel converters are being built with the use of integrated power modules thus this type of converters are getting more compact in size. This paper investigates performance of a derivation from the most popular multilevel topology - a neutral point clamped converter (NPC

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3

Barros, J. Dionísio, Luis Rocha, and J. Fernando Silva. "Backstepping Predictive Control of Hybrid Microgrids Interconnected by Neutral Point Clamped Converters." Electronics 10, no. 10 (2021): 1210. http://dx.doi.org/10.3390/electronics10101210.

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In this work, DC and AC parts of hybrid microgrids are interconnected by a neutral point clamped—NPC converter controlled using a new backstepping predictive (BP) method. The NPC converter is controlled to operate in the DC microgrid voltage control mode or in the AC microgrid power control mode. The novel backstepping predictive controller is designed using the dq state space dynamic model of the NPC converter connected to the hybrid microgrid. The designed BP controller regulates the DC voltage or AC injected power, balances the capacitor voltages, controls the AC currents, and enforces the

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4

Wang, Ziying, Ning Jiao, Shunliang Wang, Junpeng Ma, Rui Zhang, and Tianqi Liu. "Quantitative Analysis of Balancing Range for Single-Phase 3L-NPC Converters." Energies 17, no. 6 (2024): 1464. http://dx.doi.org/10.3390/en17061464.

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Multiple techniques have been suggested to achieve control balance in single-phase three-level neutral-point clamped (3L-NPC) converters. Nevertheless, there is a deficiency of quantitative calculations related to the extent of balancing. Operating beyond the balancing range may result in a sequence of safety incidents. This paper presents a conceptualization of the 3L-NPC converter as two cascaded H-bridges. By employing power conservation principles, the balancing range for the NPC converter is derived, and two novel methods are investigated to broaden the balance range in accordance with th

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Jing, Wei, and Ran Ding. "Loss Analysis of Three-Level Active Neutral Point Clamped Converter under Fault Tolerance Operation." Advanced Materials Research 588-589 (November 2012): 847–50. http://dx.doi.org/10.4028/www.scientific.net/amr.588-589.847.

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Compared with traditional three-level neutral-point-clamped (NPC) converter, the recently proposed three-level active NPC (ANPC) converter has the ability to overcome the unbalanced loss distribution, and therefore result in increased output power or switching frequency. In industrial applications, fault tolerance ability of power converters is very important considering system availability, safety and reliability. This paper introduced the control schemes to get stable and continuous output under single device fault for both open-circuit and short-circuit fault cases. By analyzing the phase r

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Kim, Ju-Yong, Ho-Sung Kim, Ju-Won Baek, and Dong-Keun Jeong. "Analysis of Effective Three-Level Neutral Point Clamped Converter System for the Bipolar LVDC Distribution." Electronics 8, no. 6 (2019): 691. http://dx.doi.org/10.3390/electronics8060691.

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Low-voltage direct current (LVDC) distribution has attracted attention due to increased DC loads, the popularization of electric vehicles, energy storage systems (ESS), and renewable energy sources such as photovoltaic (PV). This paper studies a ±750 V bipolar DC distribution system and applies a 3-level neutral-point clamped (NPC) AC/DC converter for LVDC distribution. However, the 3-level NPC converter is fundamental in the neutral-point (NP) imbalance problem. This paper discusses the NP balance control method using zero-sequence voltage among various solutions to solve NP imbalance. Howeve

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7

Peng, Xi, Sheng Yin, and Yingqin Zou. "Research on dynamic current sharing method of parallel connected IGBT modules for NPC three level converters." Journal of Physics: Conference Series 2113, no. 1 (2021): 012055. http://dx.doi.org/10.1088/1742-6596/2113/1/012055.

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Abstract The parallel connection of IGBTs has been being applied in high power neutral point clamped (NPC) three level converters. This paper investigates the impact of gate parameters (gate resistor and capacitance) on dynamic current imbalance of parallel connected IGBT for NPC three level converter. A gate parameters calculation method is proposed in the paper, and the delay time and collector current difference can be analysed quantitatively. Experimental results have shown the effectiveness of the method.

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Reusser, Carlos A., and Hector Young. "Four-Level Quasi-Nested Inverter Topology for Single-Phase Applications." Electronics 10, no. 3 (2021): 233. http://dx.doi.org/10.3390/electronics10030233.

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In this paper, a novel four-level single-phase multilevel converter is introduced, consisting of six active switches arranged in a quasi-nested configuration. The proposed topology synthesizes its output voltage levels with respect to a floating neutral point, using four cascaded capacitors with identical voltage levels. The proposed converter contains a reduced number of components compared to the neutral point clamped (NPC) or active-NPC topologies (ANPC) for the same number of output voltage levels, since it does not require diode or active switch clamping to a neutral point. Moreover, no f

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9

Ye, Zongbin, Yiming Xu, Fei Li, Xianming Deng, and Yuanzheng Zhang. "Simplified PWM Strategy for Neutral-Point-Clamped (NPC) Three-Level Converter." Journal of Power Electronics 14, no. 3 (2014): 519–30. http://dx.doi.org/10.6113/jpe.2014.14.3.519.

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N. Uday Kumar, Et al. "Implementation of Passivity-based Control of Four-Leg Inverter for Transformerless Three-Phase Solar Photovoltaic Systems." International Journal on Recent and Innovation Trends in Computing and Communication 11, no. 9 (2023): 3890–900. http://dx.doi.org/10.17762/ijritcc.v11i9.9669.

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This study explores the application of a passivity-based control technique (PBC) with an artificial neuro-fuzzy inference system (ANFIS) in a grid-connected Solar Photovoltaic (SPV) generating system for estimating reference grid currents. To optimise the tracking of the maximum power point (MPPT) between the solar photovoltaic (SPV) system and the DC bus, a DC – DC boost converter (BC) is utilised. This converter is connected to a four-leg, three-level neutral-point-clamped converter (4-leg 3L-NPC), interfaced with a three-phase, four-wire distribution system. The four-leg 4-leg 3L-NPC of the

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Gui, Shi Weng, Lu Wang, and Sheng Hua Huang. "An Improved VSVPWM Strategy of Considering Neutral-Point Potential Balancing in Three-Level NPC Converter." Applied Mechanics and Materials 496-500 (January 2014): 1079–83. http://dx.doi.org/10.4028/www.scientific.net/amm.496-500.1079.

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Neutral-point (NP)-clamped three-level converter is a widely used topology in the research fields of the multilevel converters, which suffers from the NP voltage drift as its main technical drawback. In theory, it is based on the fact that the virtual space vector modulation approach could completely control the balance of neutral-point potential, so this paper introduces a improved control strategy of neutral-point potential balancing in three-level converter, which combines the space vector modulation approach based on virtual vectors with the algorithm of modifying small vectors pairs distr

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12

Wang, Yingjie, Haiyuan Liu, Wenchao Wang, and Kangan Wang. "A Novel Neutral-Point Potential Balance Strategy for Three-Level NPC Back-to-Back Converter Based on the Neutral-Point Current Injection Model." Mathematical Problems in Engineering 2015 (2015): 1–12. http://dx.doi.org/10.1155/2015/736828.

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The neutral-point (NP) potential balance control in three-level neutral-point-clamped (NPC) back-to-back converter is a research nodus. Its current strategies are the same as the strategies of a single three-level NPC converter. But the strategies do not give full play to its advantages that the neutral-point current can only flow through the connected midlines in both sides of the converter but does not flow through the DC-bus capacitors. In this paper, firstly the NP potential model based on the NP current injected is proposed. It overcomes numerous variable constraints and mutual coupling i

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Madasamy, P., Rajesh Verma, A. Rameshbabu, et al. "Neutral Point Clamped Transformer-Less Multilevel Converter for Grid-Connected Photovoltaic System." Electronics 10, no. 8 (2021): 977. http://dx.doi.org/10.3390/electronics10080977.

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Transformer-less (TL) inverter topologies have elicited further special treatment in photo-voltaic (PV) power system as they provide high efficiency and low cost. Neutral point clamped (NPC) multilevel-inverter (MLI) topologies-based transformer-less are being immensely used in grid-connected medium-voltage high-power claims. Unfortunately, these topologies such as NPC-MLI, full-bridge inverter with DC bypass (FB-DCBP) suffer from the shoot-through problem on the bridge legs, which affect the reliability of the implementation. Based on the previous above credits, a T type neutral point clamped

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14

Ojha, Amit. "Design of Control System Using Online Tuning of PI Controllers for Three-Phase Active Front End Neutral Point Clamped Three-Level Converter." Journal Européen des Systèmes Automatisés 53, no. 6 (2020): 869–82. http://dx.doi.org/10.18280/jesa.530613.

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In conventional DC link AC-AC converter system, uncontrolled front end converter has inherent problem of power quality. To overcome the problem associated with uncontrolled front end converter, multilevel front end converter will be good choice for high power applications. In the paper, unity power factor control system (UPC) for active front end (AFE) neutral point clamped (NPC) 3-level converter is presented. PI controllers are used in UPC and for tuning of PI controllers it is essentially required to know the different time constants with their gains exactly for evaluating the optimized con

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15

Maklakov, Aleksandr S., and Ivan N. Erdakov. "Study of Behavior of Voltage and Current Spectra of Three-Level Neutral Point Clamped Converter at Selected Harmonic Elimination Programmed Pulse Pattern Pulse-Width Modulation." Energies 16, no. 13 (2023): 5183. http://dx.doi.org/10.3390/en16135183.

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The issue of converted voltage distortion by high-power converters at pulse-width modulation (PWM) with a low switching frequency of semiconductor modules is still relevant. Currently, the Programmed Pulse Pattern PWM (PPWM) technique is used extensively that allows pre-eliminating the selected harmonics from the converter’s voltage and current spectrum or reducing them to meet the voltage quality standard requirements. A review of scientific publications has shown the insufficiency of available studies on defining and estimating the impact of powerful converters with PPWM. The problem of defi

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16

Abdelhay, Sadki Amari Ayoub El Gadari Abdezzahid Arbaoui. "PV system applied on the new PUC-NPC inverter." Indonesian Journal of Electrical Engineering and Computer Science 35, no. 2 (2024): 720–28. https://doi.org/10.11591/ijeecs.v35.i2.pp720-728.

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In this article, the authors present a new competitive Packed-U-cell and neutral point clamped (PUC-NPC) 9-level converter that utilizes a small number of power switches and passive components. Only seven switches are added to a single DC source. However, the proposed converter takes benefits of the neutral point clamped (NPC) converter’s capability to connect capacitors in series, all with a simple control that enables the algorithm associated to the proposed inverter operate correctly in an open loop operation. A technique of pulse width modulation (PWM) is employed to maintain capacit

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17

Do, Ngoc Quy, Ba Phu Do, and Kien Trung Nguyen. "The new approach minimizes harmonics in a single-phase three-level NPC 400 Hz converter for airplanes." International Journal of Power Electronics and Drive Systems (IJPEDS) 12, no. 3 (2021): 1738–50. https://doi.org/10.11591/ijpeds.v12.i3.pp1738-1750.

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This paper provides a new approach to reducing high-order harmonics in 400 Hz inverter using a three-level neutral-point clamped (NPC) converter. A voltage control loop using the harmonic compensation combined with NPC clamping diode control technology. The capacitor voltage imbalance also causes harmonics in the output voltage. For 400 Hz inverter, maintain a balanced voltage between the two input (direct current) (DC) capacitors is difficult because the pulse width modulation (PWM) modulation frequency ratio is low compared to the frequency of the output voltage. A method of determining the

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18

Barros, João Dionísio Simões, Luis Rocha, and J. Fernando Silva. "Backstepping Control of NPC Multilevel Converter Interfacing AC and DC Microgrids." Energies 16, no. 14 (2023): 5515. http://dx.doi.org/10.3390/en16145515.

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This work introduces modified backstepping methods to design controllers for neutral point clamped (NPC) converters interfacing a DC/AC microgrid. The modified backstepping controllers are derived from a proper converter model, represented in dq coordinates, and are designed to regulate the DC voltage and to balance the two NPC converter DC capacitor voltages through a DC offset in the sinusoidal pulse width modulation (SPWM) carriers. The averaged and separated dynamics backstepping controllers also enforce nearly sinusoidal AC currents at a given power factor. The two proposed NPC converter

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19

Mechouma, Rabiaa, and Boubekeur Azoui. "Multiple low frequency dual reference PWM control of a grid connected photovoltaic three phase NPC inverter with DC/DC boost converter." Serbian Journal of Electrical Engineering 11, no. 2 (2014): 315–37. http://dx.doi.org/10.2298/sjee1402315m.

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In recent years, power demand of industrial applications has increased significantly reaching some megawatts. The use of multilevel converters for applications of medium and high powers is proposed as a solution to drawback semiconductor technology. A multilevel converter not only achieves high power ratings, but also enables the use of renewable energy sources. Renewable energy sources such as photovoltaic can be easily interfaced to a multilevel converter system for a high power application. This paper presents the simulation study in Matlab/Simulink of a grid connected photovoltaic three ph

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Mahaboob Basha, S., and M. Kannan. "Open switch fault detection technique of a back-to-back converter using NPC topology for turbine systems." International Journal of Engineering & Technology 7, no. 2.12 (2018): 359. http://dx.doi.org/10.14419/ijet.v7i2.12.11351.

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Efficiency is turning into more and more necessary in power electronics. New applications are developed to reduce the consumption of en-ergy. Inverters that supply continuous quality power have vast use in solar energy based applications. For a Wind Turbine Generation sys-tem with neutral-point-clamped (NPC) topology in a back to back converter , good efficiency is provided when operated at high power. In NPC topology totally twelve switches are present. Input current distortion, torsion vibration and output current distortion is caused by open switch fault within NPC inverter and rectifier of

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Amari, Abdelhay Sadki, Ayoub El Gadari, and Abdezzahid Arbaoui. "PV system applied on the new PUC-NPC inverter." Indonesian Journal of Electrical Engineering and Computer Science 35, no. 2 (2024): 720. http://dx.doi.org/10.11591/ijeecs.v35.i2.pp720-728.

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In this article, the authors present a new competitive Packed-U-cell and neutral point clamped (PUC-NPC) 9-level converter that utilizes a small number of power switches and passive components. Only seven switches are added to a single DC source. However, the proposed converter takes benefits of the neutral point clamped (NPC) converter’s capability to connect capacitors in series, all with a simple control that enables the algorithm associated to the proposed inverter operate correctly in an open loop operation. A technique of pulse width modulation (PWM) is employed to maintain capacitor vol

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Venkateswarlu, K., K. Yasaswini, SK Haseena Begum, et al. "A New Step-Up Switched-Capacitor Voltage Balancing Converter." International Journal of Innovative Research in Engineering & Management 9, no. 6 (2022): 65–69. http://dx.doi.org/10.55524/ijirem.2022.9.6.11.

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The new step-up capacitor grid is connected to the solar photovoltaic (PV) having a voltage balancing converters. It’s suitable for Neutral-Point-clamped (NPC) Multilevel Inverter (MI). To balance the capacitor DC link voltage effectively we've got to use switched capacitors. By using balancing converter, we will enlarge the higher levels and also by boosting input voltage we are able to see the upper levels of voltage without using magnetic components. This attribute allows operating the input and output voltage by self-balancing. The balancing converter for NPC multilevel inverter-based sola

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Cao, Yonglei, Xiaodong Zhang, Xiang Liu, and Yuling Ma. "Study on Modulation Strategy of Electronic Converters Based on Improved D-NPC Topology for Full Electric Vehicle." World Electric Vehicle Journal 12, no. 2 (2021): 80. http://dx.doi.org/10.3390/wevj12020080.

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The battery is the only power source of full electric vehicles, and the converter plays a key role in power and signal conversion; therefore, the stability and reliability of the converter determine the performance of the whole vehicle system. In order to improve the overall performance of the converter and optimize the function of the ID-NPC (improved diode neutral-point-clamped) topology with power allocation, the two-level topology is improved, and it is also a part of the ID-NPC topology. Based on the ID-NPC topology, the converter level can switch according to the proposed three-level and

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Razali, Azziddin Mohamad, Nor Azizah Mohd Yusoff, Syahar Azalia Ab Shukor, Muhammad Hafeez Mohamed Hariri, Auzani Jidin, and Tole Sutikno. "Analysis of VFDPC for three-level neutral point clamped AC-DC converters with capacitor balancing s." Indonesian Journal of Electrical Engineering and Computer Science 38, no. 1 (2025): 63. https://doi.org/10.11591/ijeecs.v38.i1.pp63-75.

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This paper presents an analysis of the dynamic performance of a three-level neutral point clamped (NPC) AC-DC converter utilizing the advanced control technique of virtual flux direct power control (VFDPC). VFDPC estimates the three-phase grid voltage and instantaneous active and reactive power components, eliminating the need for an AC input voltage sensor used in conventional direct power control (DPC). This reduction in sensors decreases system complexity and cost while mitigating high-frequency noise and interference. Integrating VFDPC into 3L NPC AC-DC converters significantly enhances ov

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Azziddin, Mohamad Razali Nor Azizah Mohd Yusoff Syahar Azalia Ab Shukor Muhammad Hafeez Mohamed Hariri Auzani Jidin Tole Sutikno. "Analysis of VFDPC for three-level neutral point clamped AC-DC converters with capacitor balancing solution." Indonesian Journal of Electrical Engineering and Computer Science 38, no. 1 (2025): 63–75. https://doi.org/10.11591/ijeecs.v38.i1.pp63-75.

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This paper presents an analysis of the dynamic performance of a three-level neutral point clamped (NPC) AC-DC converter utilizing the advanced control technique of virtual flux direct power control (VFDPC). VFDPC estimates the three-phase grid voltage and instantaneous active and reactive power components, eliminating the need for an AC input voltage sensor used in conventional direct power control (DPC). This reduction in sensors decreases system complexity and cost while mitigating high-frequency noise and interference. Integrating VFDPC into 3L NPC AC-DC converters significantly enhances ov

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Ghennam, Tarak, Lakhdar Belhadji, Nassim Rizoug, Bruno Francois, and Seddik Bacha. "A Three-Level Neutral-Point-Clamped Converter Based Standalone Wind Energy Conversion System Controlled with a New Simplified Line-to-Line Space Vector Modulation." Energies 17, no. 9 (2024): 2214. http://dx.doi.org/10.3390/en17092214.

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Wind power systems, which are currently being constructed for the electricity worldwide market, are mostly based on Doubly Fed Induction Generators (DFIGs). To control such systems, multilevel converters are increasingly preferred due to the well-known benefits they provide. This paper deals with the control of a standalone DFIG-based Wind Energy Conversion System (WECS) by using a three-level Neutral-Point-Clamped (NPC) converter. The frequency and magnitude of the stator output voltage of the DFIG are controlled and fixed at nominal values despite the variable rotor speed, ensuring a continu

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Puthiyapurayil, Muhammed Ramees Mullali Kunnontakath, Mohamed Nadir Nasirudeen, Yashkumar A. Saywan, Md Waseem Ahmad, and Hasmat Malik. "A Review of Open-Circuit Switch Fault Diagnostic Methods for Neutral Point Clamped Inverter." Electronics 11, no. 19 (2022): 3169. http://dx.doi.org/10.3390/electronics11193169.

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Due to numerous advantages, a neutral point clamped (NPC) inverter is a preferred choice for high-power applications and renewable technology. The reliability of the NPC inverter is a major concerning factor during the assessment of system performance as power semiconductor switches are vulnerable to abnormal conditions. Open-circuit (OC) switch faults are not as dangerous as short circuit (SC) faults but eventually have enough potential to cause cascaded failure to other components in the system and thus need to be supervised carefully. The OC faults result in a distortion of voltage and curr

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Scholtz, Pieter Antonie, and Michael Njoroge Gitau. "Asymmetric Neutral Point Diode Clamped Topology with Reduced Component Count for Switched Reluctance Machine Drive." Energies 15, no. 7 (2022): 2468. http://dx.doi.org/10.3390/en15072468.

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The Reduced Asymmetric Neutral Point Clamped converter topology for unipolar driven, multiphase switched reluctance machines is proposed in this paper. This topology shares similarities with the conventional NPC and Asymmetric-NPC topologies, however it is unique in that the components for the capacitor string and outer semiconductor switches are shared among all the phases for a reduced component count. Some switching state combinations are not possible during commutation overlap between motor phases, resulting in minor torque transients during regenerative braking. A custom modulation scheme

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Y Sravan kumar. " Single-Phase Five Level Modified Neutral Point Clamped Grid-Tied Inverter Topology with a Front-End Multilevel Boost Converter." Journal of Information Systems Engineering and Management 10, no. 21s (2025): 352–64. https://doi.org/10.52783/jisem.v10i21s.3341.

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Traditionally, the standalone performance of a single-phase fault-tolerant five-level neutral-point-clamped inverter (5L-NPC), powered by two rigid direct current (DC) sources, has been examined with an emphasis on the level shifted pulse width modulation (LS-PWM) method. In this configuration, the bidirectional switch setup incorporates four diodes and a single IGBT switch, which inherently leads to higher conduction losses in the system. Typically, NPC inverter topologies face challenges related to the balancing of DC-link capacitor voltages (DCL-CVs). In recent studies, researchers have add

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Luqman, Muhammad, Gang Yao, Lidan Zhou, Di Yang, and Anil Lamichhane. "Study and Implementation of a Cost-Effective 3L-Active Rectifier for DC Collection in WECS." E3S Web of Conferences 118 (2019): 02065. http://dx.doi.org/10.1051/e3sconf/201911802065.

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Power electronic converters are widely used in wind energy conversion system (WECS) applications. Therefore, with the increasing manufacturing capacity of multi-MW wind generators, multi-level converters, or parallel configuration of converters are becoming more attractive solutions towards DC collection from the wind generator. Among the multilevel converters, three-level full-scale neutral point diode clamped (3L-NPC) converter are using extensively for such applications in order to reduce the voltage stress on the semiconductor devices. In this article, a comparative study based on several

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Abronzini, Umberto, Ciro Attaianese, Matilde D’Arpino, Mauro Di Monaco, and Giuseppe Tomasso. "Induction Motor Drives Fed by an NPC Inverter with Unbalanced DC-Link." Electronics 8, no. 12 (2019): 1379. http://dx.doi.org/10.3390/electronics8121379.

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Neutral Point Clamped (NPC) converters with n levels are traditionally controlled in such a way that the DC-link capacitors operate at 1/( n - 1) of the total DC-link voltage level. The voltage level across the DC-link capacitors has to be properly regulated by the capacitor unbalance control to contain the harmonic distortion of the converter output voltages. State-of-the-art modulation techniques address the problem of the DC-link voltage regulation for NPC inverters. However, they highly show reduced performance when unbalanced DC-link voltages are considered. In this paper, a novel Space V

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D., Selvabharathi, Palanisamy R., Selvakumar K., et al. "Simulation of Zeta Converter based 3-Level NPC Inverter with PV System." Indonesian Journal of Electrical Engineering and Computer Science 12, no. 1 (2018): 1–6. https://doi.org/10.11591/ijeecs.v12.i1.pp1-6.

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This paper proposes increasing the efficiency of the autonomous Photovoltaic (PV) system by utilizing zeta converter alongside neutral point clamped multilevel inverters (NPC-MLI) based on innovative PWM scheme. The PV system acts as an input source and the relevant control of zeta converter through maximum power point tracking (MPPT) offers the maximum available power from the PV array connected to DC-link. To obtain a high voltage gain we need to exhaust the dc-link voltage as much as possible and reduce stress on the switches. For this the NPC-MLI algorithm approaches PWM technique to perfo

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Oloo, Jackson, and Laszlo Szamel. "Fault-Tolerant Performance Analysis of a Modified Neutral-Point-Clamped Asymmetric Half-Bridge Converter for an In-Wheel Switched Reluctance Motor." Eng 5, no. 4 (2024): 2575–87. http://dx.doi.org/10.3390/eng5040135.

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Reliability is an essential factor for the operation of the Switched Reluctance Motor (SRM) drive. Electric vehicles operate in harsh environments, which may degrade the operation of power converters. These failure modes include transistor open- and short-circuits, freewheeling diode open- and short-circuits, and DC-link capacitor failures. This work presents a performance analysis of an in-wheel SRM for an electric vehicle under short-circuit (SC) and open-circuit (OC) faults of a modified Neutral-Point-Clamped Asymmetric Half-Bridge (NPC-AHB) Converter. The SRM is modeled as an in-wheel elec

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Quy, Do Ngoc, Do Ba Phu, and Nguyen Kien Trung. "The new approach minimizes harmonics in a single-phase three-level NPC 400 Hz converter for airplanes." International Journal of Power Electronics and Drive Systems (IJPEDS) 12, no. 3 (2021): 1738. http://dx.doi.org/10.11591/ijpeds.v12.i3.pp1738-1750.

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<span lang="EN-US">This paper provides a new approach to reducing high-order harmonics in 400 Hz inverter using a three-level neutral-point clamped (NPC) converter. A voltage control loop using the harmonic compensation combined with NPC clamping diode control technology. The capacitor voltage imbalance also causes harmonics in the output voltage. For 400 Hz inverter, maintain a balanced voltage between the two input (direct current) (DC) capacitors is difficult because the pulse width modulation (PWM) modulation frequency ratio is low compared to the frequency of the output voltage. A m

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Vicente, José, and Agostinho Rocha. "Comparative Study of Multilevel Converters using DQ Current Control." U.Porto Journal of Engineering 10, no. 3 (2024): 59–71. http://dx.doi.org/10.24840/2183-6493_0010-003_002679.

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This paper presents a comprehensive comparative analysis of different multilevel converter topologies, including 2-level, Neutral Point-Clamped (NPC), Cascaded H-Bridge (CHB), and T-Type converters using the DQ current control strategy. The study aims to evaluate the performance of these topologies concerning current Total Harmonic Distortion (THD) and ripple in the direct and quadrature components of the current. A mathematical model of the grid is presented to facilitate the simulation study. The DQ current control scheme is implemented to regulate the current in both the direct and quadratu

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Riyadh, Toman Thahab, Hamodi Al-Mhana Tahani, and Toman Thahab Ahmed. "Capacitor current analysis of a three-level neutral point clamped converter under unbalanced loading conditions." Capacitor current analysis of a three-level neutral point clamped converter under unbalanced loading conditions 13, no. 6 (2023): 6156–73. https://doi.org/10.11591/ijece.v13i6.pp6156-6173.

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A neutral point clamped (NPC) converter is considered a forefront in industrial applications. Supplying a typically balanced stand-alone load is one of those applications. However, the loading may become unbalanced which can impact the capacitors’ current and voltage ripple. In this work, an approach is proposed that analyze the capacitor current under unbalanced loading. The proposed method is based on a combination of two-dimensional Fourier series and symmetrical components. Since, two-dimensional Fourier series sectorize the spectrum into harmonics that are either defined by multiple

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Thahab, Riyadh Toman, Tahani Hamodi Al-Mhana, and Ahmed Toman Thahab. "Capacitor current analysis of a three-level neutral point clamped converter under unbalanced loading conditions." International Journal of Electrical and Computer Engineering (IJECE) 13, no. 6 (2023): 6156. http://dx.doi.org/10.11591/ijece.v13i6.pp6156-6173.

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A neutral point clamped (NPC) converter is considered a forefront in industrial applications. Supplying a typically balanced stand-alone load is one of those applications. However, the loading may become unbalanced which can impact the capacitors’ current and voltage ripple. In this work, an approach is proposed that analyze the capacitor current under unbalanced loading. The proposed method is based on a combination of two-dimensional Fourier series and symmetrical components. Since, two-dimensional Fourier series sectorize the spectrum into harmonics that are either defined by multiples of,

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Selvabharathi, D., Palanisamy R, K. Selvakumar, et al. "Simulation of Zeta Converter Based 3-level NPC Inverter with PV System." Indonesian Journal of Electrical Engineering and Computer Science 12, no. 1 (2018): 1. http://dx.doi.org/10.11591/ijeecs.v12.i1.pp1-6.

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<span lang="EN-US">This paper proposes increasing the efficiency of the autonomous Photovoltaic (PV) system by utilizing zeta converter alongside neutral point clamped multilevel inverters (NPC-MLI) based on innovative PWM scheme. The PV system acts as an input source and the relevant control of zeta converter through maximum power point tracking (MPPT) offers the maximum available power from the PV array connected to DC-link. To obtain a high voltage gain we need to exhaust the dc-link voltage as much as possible and reduce stress on the switches. For this the NPC-MLI algorithm approach

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Shishkov, Aleksandr N., Maxim M. Dudkin, Aleksandr S. Maklakov, Van Kan Le, Andrey A. Radionov, and Vlada S. Balabanova. "An Improved Space Vector PWM Algorithm with a Seven-Stage Switching Sequence for Three-Level Neutral Point Clamped Voltage Source Inverters." Energies 18, no. 10 (2025): 2452. https://doi.org/10.3390/en18102452.

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The main purpose of this research is to develop an improved space vector pulse-width modulation (SVPWM) algorithm for three-level (3L) neutral point clamped (NPC) voltage source inverters (VSIs). The results of experiments conducted on the three-level power converter laboratory setup showed that the proposed SVPWM algorithm with a seven-stage switching sequence (SS) can reduce a VSI’s switching frequency by 43.48% compared to the SVPWM algorithm with the base SS. It also improves the neutral point (NP) voltage balance in the VSI DC link by 4.2% by controlling the duty factor of distributed bas

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Karni, Awais, Omid Beik, Mahzad Gholamian, Mahdi Homaeinezhad, and Muhammad Owais Manzoor. "Multilevel Middle Point Clamped (MMPC) Converter for DC Wind Power Applications." Sustainability 16, no. 17 (2024): 7563. http://dx.doi.org/10.3390/su16177563.

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This manuscript introduces a novel multilevel middle point clamped (MMPC) DC-DC converter and its associated switching scheme aimed at maintaining the desired medium-voltage DC (MVDC) collector grid within offshore all-DC wind farms. Building upon previous work by the authors, which proposed an all-DC structure serving as a benchmark system, this study explores the application of the MMPC DC-DC converter within this framework. Within the all-DC wind generation system, a 9-phase hybrid generator (HG) integrated into the wind turbine is linked to the MVDC collector grid through an AC-DC stage, w

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Bhowmick, Supratik, Debranjan Mukherjee, Suman Maiti, and Chandan Chakraborty. "Grid-Tied Neutral Point Clamped based Centralised Photovoltaic Inverter with Improved DC Link Voltage Balancing and Harmonic Minimisation Control." Power Electronics and Drives 6, no. 1 (2021): 185–203. http://dx.doi.org/10.2478/pead-2021-0011.

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Abstract This paper proposes an improved space vector pulse width modulation (SVPWM) based DC link voltage balancing control of a three-phase three-level neutral point clamped (NPC) centralised inverter supplying the generated power from photo voltaic (PV) array to a three-phase utility grid. Two possible schemes have been developed based on the power conversion stage between PV array and the utility grid namely, two-stage (three-level boost converter three-phase three-level NPC inverter) and single-stage (three-phase three-level NPC inverter alone). The comparison between these two schemes ha

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Domino, A., K. Zymmer, and M. Parchomiuk. "Selected converter topologies for interfacing energy storages with power grid." Bulletin of the Polish Academy of Sciences Technical Sciences 65, no. 5 (2017): 579–88. http://dx.doi.org/10.1515/bpasts-2017-0063.

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Abstract The paper presents different solutions applicable in power converter systems for connecting power grids with energy storage systems such as superconducting magnetic energy storage (SMES), supercapacitor energy storage (SES) or chemical batteries. Those systems are characterized by bidirectional current flow between energy storage and power grid. Two-level converters (AC-DC and DC-AC converters) dedicated for low power energy storage compatible with 3×400 V-type power grids are proposed. High power systems are connected with 3×6 kV-type power grids via transformers that adjust voltage

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Reusser, Carlos A., and Ramón Herrera. "Model Predictive Control Scheme of a Four-Level Quasi-Nested Converter Fed AC-Drive, with dc-Link Voltage-Drift Compensation." Electronics 11, no. 3 (2022): 333. http://dx.doi.org/10.3390/electronics11030333.

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In this paper, a Model Predictive Control (MPC) strategy is introduced for its application in a four-level quasi-nested topology, feeding an Interior Permanent Magnet Synchronous Machine (IPMSM) AC-drive. The proposed control strategy is capable to synthesize the required output space vectors to ensure perfect tracking of the AC-drive speed reference under different loading conditions, while also ensuring voltage balance between the dc-link capacitors. The proposed converter topology is based on a reduced number of components compared to other mature converter topologies, such as the neutral-p

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de Souza, Victor Ramon França Bezerra, Luciano Sales Barros, and Flavio Bezerra Costa. "Modular Multilevel Converter for Low-Voltage Ride-Through Support in AC Networks." Energies 14, no. 17 (2021): 5314. http://dx.doi.org/10.3390/en14175314.

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New grid-connected systems have imposed additional requirements regarding reliability, power quality, high levels of power processing capacity, and fault support, where power converters have a crucial role in fulfilling these requirements. Overcoming one of these challenges, this paper proposes a new alternative application to improve the low-voltage ride-through (LVRT) support based on the arm impedance employment of the modular multilevel converter (MMC) by attenuating the fault impacts, avoiding overcurrents and overvoltages. This proposal does not require additional hardware or control loo

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Chen, Guo, Chunyang Gong, Jun Bao, Lihua Zhu, and Zhixin Wang. "Compensation-Voltage-Injection-Based Neutral-Point Voltage Fluctuation Suppression Method for NPC Converters." Energies 16, no. 11 (2023): 4409. http://dx.doi.org/10.3390/en16114409.

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Three-level neutral-point clamped (NPC) inverters are widely used in the new energy power generation, motor drive, and many other occasions. However, the neutral-point voltage imbalance of an NPC inverter will affect the output of the inverter system, and the control of the neutral point voltage has become a popular research topic. In this paper, a compensation-voltage-injection-based neutral-point voltage balancing method is proposed. During the switching cycle, the average value model of the neutral-point current under different voltage vectors is applied to calculate the value of the compen

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Kumar, Mukesh. "Multi-Level Inverter Modeling and Simulation Using Various and Complex PWM Modulation in MATLAB/Simulink." International Journal for Research in Applied Science and Engineering Technology 13, no. 5 (2025): 2602–9. https://doi.org/10.22214/ijraset.2025.70699.

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Abstract: Thispaperpresentsadetailedcomparisonofseveral multilevel inverter (MLI) topologies, including Neutral Point Clamped (NPC), Flying Capacitor (FC), Cascaded H-Bridge (CHB), and Modular Multilevel Converter (MMC). Application domains, control schemes, modularity, voltage balancing, and structural complexity are the main topics of the analysis. Each topology’s component requirements, modulation techniques, and performancetrade-offsareexamined.Simulationresultsvalidate thetheoreticalevaluationandshowhoweachtopologyissuitable forspecificapplicationssuchaselectricdrives,renewableenergy syst

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Gagana, R. Nayak, and Pradeepa S. "Simulation of Landsman Converter with Npc-Multilevel Inverter for Water Pump Applications." Journal of Power Electronics and Devices 5, no. 3 (2019): 11–20. https://doi.org/10.5281/zenodo.3339085.

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<em>This study explains the operation and design of Landsman DC-DC converter employing maximum power point tracking (MPPT) controller for maximum power conversion in a solar Photovoltaic (PV) array. The output DC voltage of converter through inverter is fed to the induction motor based water pump. The above system is proposed by using a neutral point clamped (NPC) multilevel inverter for the DC to AC conversion. Incremental conductance algorithm is chosen to operate the PV array close to optimum operating point. The input voltage and current is sensed to achieve MPP. Output voltage is sensed t

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Luqman, Muhammad, Gang Yao, Lidan Zhou, Tao Zhang, and Anil Lamichhane. "A Novel Hybrid Converter Proposed for Multi-MW Wind Generator for Offshore Applications." Energies 12, no. 21 (2019): 4167. http://dx.doi.org/10.3390/en12214167.

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Modern multi-MW wind generators have used multi-level converter structures as well as parallel configuration of a back to back three-level neutral point clamped (3L-NPC) converters to reduce the voltage and current stress on the semiconductor devices. These configurations of converters for offshore wind energy conversion applications results in high cost, low power density, and complex control circuitry. Moreover, a large number of power devices being used by former topologies results in an expensive and inefficient system. In this paper, a novel bi-directional three-phase hybrid converter tha

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Reusser, Carlos A., Matías Parra, Gerardo Mino-Aguilar, and Victor R. Gonzalez-Diaz. "Comparison of Induction Machine Drive Control Schemes on the Distribution of Power Losses in a Three-Level NPC Converter." Machines 13, no. 3 (2025): 227. https://doi.org/10.3390/machines13030227.

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Medium- and high-power drive applications have grown since the past decade as the most common solution for high demanding industrial processes. Multilevel converters, in particular the three-level neutral point clamped (3L-NPC) topology driving medium-voltage induction machines, has become the most commonly adopted solution. In this context, several AC drive control schemes are suitable, such as scalar control (SC), field-oriented control (FOC), model predictive control (MPC), and direct torque control (DTC). Each of these control strategies exhibit a particular operational profile which affec

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Beriber, D., A. Talha, and M. Boucherit. "Stabilization of multi DC bus link voltages of multilevel NPC VSI. Application to double stator induction motors." Archives of Control Sciences 22, no. 1 (2012): 107–20. http://dx.doi.org/10.2478/v10170-011-0015-1.

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Stabilization of multi DC bus link voltages of multilevel NPC VSI. Application to double stator induction motors Voltage source multilevel inverters have become very attractive for power industries in power electronics applications during last years. The main purposes of studying multilevel inverters are the generation of output voltage signals with low harmonic distortion and reduction of switching frequency. An important issue of the multilevel inverter is the capacitor voltage-balancing problem. The unbalance of different DC voltage sources of multilevel neutral point clamped (NPC) voltage

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