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Fault-Tolerant Control Strategy for Neutral-Point-Clamped Three-Level Inverter [PDF]

Journal of Control Science and Engineering, 2018
A fault-tolerant control technique is discussed for the Neutral-Point-Clamped (NPC) three-level inverter, which ensures that the NPC inverter operates normally even under device failures. A two-level leg is added to the NPC inverter; when the device open
Yanxia Shen, Beibei Miao, Dinghui Wu, Kader Ali Ibrahim   +3 more
doaj   +2 more sources

Compensation-Voltage-Injection-Based Neutral-Point Voltage Fluctuation Suppression Method for NPC Converters

Energies, 2023
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 ...
Guo Chen, Chunyang Gong, Jun Bao, Lihua Zhu, Zhixin Wang   +4 more
doaj   +1 more source

Comparison of Isolated Bidirectional DC/DC Converters Using WBG Devices for More Electric Aircraft

IEEE Open Journal of the Industrial Electronics Society, 2021
With the aim towards lighter and more efficient electrical systems in future aircraft, design of DC/DC converters with high efficiency, power density and improved thermal management becomes necessary.
Niloufar Keshmiri, Mohamed I. Hassan, Romina Rodriguez, Ali Emadi   +3 more
doaj   +1 more source

An Advanced Modulation Technique Featuring Neutral Point Voltage Ripple Suppression of Three-Level Converters in High-Speed Drives

IEEE Access, 2021
This paper introduces an advanced space vector modulation technique for three-level neutral-point-clamped (3L-NPC) converters. The studied 3L-NPC converters within aircraft electric starter generator (ESG) systems normally operate at high modulation ...
Chen Li, Tao Yang, Zhen Huang, Seang Shen Yeoh, Serhiy Bozhko, Patrick Wheeler   +5 more
doaj   +1 more source

Research on the Neutral-Point Voltage Balance for NPC Three-Level Inverters under Non-Ideal Grid Conditions

Energies, 2018
In order to solve the neutral-point voltage unbalancing problem for neutral-point clamped (NPC) three-level inverters under non-ideal grid conditions, a novel zero-sequence component injection method for modulation signals was proposed in this paper ...
Jian Guo Lyu, Ji Dong Wang, Wen Bin Hu, Zhao Feng Wu   +3 more
doaj   +1 more source

Virtual Vector-Based FCS-MPC for NPC Three-Level Grid-Tied Inverter Without Weighting Factor of Neutral-Point Voltage Balancing

IEEE Access, 2022
The neutral-point clamped (NPC) inverter is widely used in energy conversion, but the unbalance of neutral-point voltage (NPV) will lead to imprecise control and the decline of power quality.
Nan Jin, Dongren Dai, Huan Xie, Jie Wu, Leilei Guo   +4 more
doaj   +1 more source

A Hysteresis Space Vector PWM for PV Tied Z-Source NPC-MLI With DC-Link Neutral Point Balancing

IEEE Access, 2021
The Photo-voltaic (PV) tied Z-source Neutral-point clamped multilevel inverter (Z-NPC-MLI) is used in solar grid connected applications due to its single stage conversion and better performance.
Suresh Kumar Annam, R. K. Pongiannan, N. Yadaiah   +2 more
doaj   +1 more source

Asymmetric Neutral Point Diode Clamped Topology with Reduced Component Count for Switched Reluctance Machine Drive

Energies, 2022
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 ...
Pieter Antonie Scholtz, Michael Njoroge Gitau   +1 more
doaj   +1 more source

A Varied VSVM Strategy for Balancing the Neutral-Point Voltage of DC-Link Capacitors in Three-Level NPC Converters

Energies, 2015
In the research field of multilevel converters, three-level NPC (neutral-point-clamped) converters, which unfortunately may cause the deviation of the neutral-point voltage of DC-link capacitors, are widely discussed.
Shi Weng Gui, Zhen Jun Lin, Sheng Hua Huang   +2 more
doaj   +1 more source

Adaptive perturb and observe maximum power point tracking with current predictive and decoupled power control for grid-connected photovoltaic inverters

Journal of Modern Power Systems and Clean Energy, 2018
In order to improve maximum power point tracking (MPPT) performance, a variable and adaptive perturb and observe (P&O) method with current predictive control is proposed. This is applied in three-phase three-level neutral-point clamped (NPC) photovoltaic
Yong YANG, Huiqing WEN
doaj   +1 more source