Results 21 to 30 of about 439 (182)

A minimum reverse inductor current control for single-phase controlled-type soft-switching converters

电力工程技术, 2023
The controlled-type soft-switching technology based on critical conduction mode (CRM) is an effective way to achieve zero voltage switching (ZVS) of switches.
WU Chao, ZHANG Li, ZHENG Zhongshu, WANG Yiming   +3 more
doaj   +1 more source

Reduced Switch Count in Space Vector PWM for Three-Level NPC Inverter

Energies, 2020
The aim of this paper is to present the real-time implementation and measurements of a reduced switch count in space vector pulse width modulation for three-level neutral point clamped inverters (3L-NPC). We implement space vector pulse width modulation,
Ryszard Beniak, Krzysztof Górecki, Piotr Paduch, Krzysztof Rogowski   +3 more
doaj   +1 more source

Artificial neural networks controllers for three-phase neutral point clamped inverters

Engineering Science and Technology, an International Journal, 2023
In this study, a new current control method consisting of proportional-resonant (PR) based artificial neural networks (ANN) has been developed for a neutral point clamped (NPC) inverter.
Yunus Emre Yağan, Kadir Vardar
doaj   +1 more source

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

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   +1 more source

Assessment of a High-Order Stationary Frame Controller for Two-Level and Three-Level NPC Grid-Connected Inverters

Energies, 2022
Most grid-connected DC/AC inverters use traditional proportional–integral (PI) controllers in a synchronous frame. In addition to poor disturbance rejection capabilities, these PI controllers also exhibit steady-state errors for sinusoidal reference ...
Nawaf O. Almatani, Abdullah Ali Alhussainy, Sultan Alghamdi, Hossam Kotb, Kareem M. AboRas, Mahendiran Vellingiri, Muhyaddin Rawa   +6 more
doaj   +1 more source

Power Loss Model and Efficiency Analysis of Three-Phase Inverter Based on SiC MOSFETs for PV Applications

IEEE Access, 2019
This paper presents the power loss model analysis and efficiency of three-level neutral-point-clamped (3L-NPC) inverter that is widely employed in solar photovoltaic energy conversion system.
Mohammed Hassan Ahmed, Mingyu Wang, Muhammad Arshad Shehzad Hassan, Irfan Ullah   +3 more
doaj   +1 more source

Control method of DC component for NNBI accelerator power supply

Energy Reports, 2023
In the high voltage power supply of the negative ion source neutral beam injection system (NNBI) accelerator, the three-phase three-level neutral point clamping (NPC) inverter, as an inverter module, has a detectable DC component in its output.
Hongfei Yong, Shengmin Pan, Yiyun Huang, Hulin Feng, Baocan He   +4 more
doaj   +1 more source

CRP Deficiency Rescues Periodontitis‐Induced Hippocampal Neurogenesis Impairment by Suppressing OPC‐Derived BMP4 Signaling in Rats

Advanced Science, EarlyView.
Chronic periodontitis elevates circulating CRP, which enters the hippocampus to upregulate BMP4 in oligodendrocyte precursor cells (OPCs), thereby impairing neurogenesis and inducing anxiety/depression‐like behaviors in rats. Counteracting this pathway, CRP deficiency helps confer functional resilience to OPCs.
Lingjie Li, Ping Deng, Siyu Hou, Xianbo Xia, Wei Zhao, Xingyu Zhu, Yang Zhang, Chao Wang, Ling Xu, Jinlin Song   +9 more
wiley   +1 more source

Thermal characteristic research of associated power devices based on three-level inverters and power-loss calculation

Case Studies in Thermal Engineering, 2018
To reduce the size and improve the power density of three-level inverters, two or more associated power devices are assembled on the same heatsink, which, however, has a great influence on the thermal characteristics of heatsink because of heat ...
Shi-Zhou Xu, Chun-Jie Wang, Fang-Li Lin, Xiang-Yu Zhu, Xue Xia   +4 more
doaj   +1 more source

A zero‐current‐transition soft‐switching technique for T‐type NPC three‐level inverter

IET Power Electronics, 2023
Based on the commutation property of the T‐type neutral point clamped (T‐NPC) three‐level inverter, a novel zero‐current‐transition (ZCT) soft‐switching topology is proposed.
Jingyuan Yin, Xiuyuan Yao, Jinke Li
doaj   +1 more source