Results 61 to 70 of about 1,684,593 (114)

An Overall Minimized Switching Loss Discontinuous PWM Strategy for Neutral Point Clamped Three Level Inverters

IEEE Access, 2019
Aim at reducing switching loss (SL) of neutral-point clamped three-level inverter (NPC TLI) as much as possible, a novel SL minimized discontinuous pulse width modulation (SLMDPWM) strategy is proposed in this paper.
Weidong Jiang, Jinsong Li, Jinping Wang, Jianing Wang, Xinmei Huang   +4 more
doaj   +1 more source

A Carrier-Based Modulation With Planned Zero Sequence Voltage Injection to Control Neutral Point Voltage for Three-Level Inverter

IEEE Access, 2020
In this paper, a carrier-based modulation strategy with planned zero sequence voltage (ZSV) injection for T-type three-level inverter (TLI) is proposed to control neutral point (NP) voltage, which is simple to be implemented.
Jinping Wang, Zaiyi Gui, Peixia Wang, Juncan Wang, Weidong Jiang   +4 more
doaj   +1 more source

A novel programmed hybrid modulation for electromagnetic interference mitigation and current ripple control in miniaturised synchronous machine drives

IET Electric Power Applications, Volume 18, Issue 5, Page 527-542, May 2024.
A programmed hybrid spreading spectrum modulation method to mitigate electromagnetic interference (EMI) emission in the context of miniaturised and lightweight synchronous machine drives is proposed. The proposed method is well‐suited for controlling synchronous motors using three‐phase two‐level voltage source inverters.
Hongtai Ma, Li Li, Kunpeng Fan, Youguang Guo, Zhihui Jin, Jian Luo   +5 more
wiley   +1 more source

Thermally Balanced DPWM Method With Neutral Point Voltage Balancing Capability for Single-Phase Five-Level T-Type NPC Inverters

IEEE Access
Discontinuous pulse width modulation (DPWM) is useful to improve the efficiency of a single-phase five-level T-type neutral-point-clamped (5LT-NPC) inverter and the reliability of the power devices.
Kyu-Jin Min, Ui-Min Choi
doaj   +1 more source

Design of Control System for 5MW Medium Voltage  Direct-Driven Wind Power Converter

Journal of Harbin University of Science and Technology, 2018
The diode threelevel neutralpointclamped (3LNPC) converter with full power is a promising multilevel topology in the application of wind power generation system.
DENG Xiao-xiang, DAI Chao-fan
doaj   +1 more source

New single‐stage bidirectional three‐phase ac‐dc solid‐state transformer

Electronics Letters, Volume 60, Issue 2, January 2024.
This letter extends a new isolated bidirectional three‐phase buck‐boost power‐factor‐correction rectifier concept to medium‐voltage input, resulting in an solid‐state transformer (SST) that performs MVac‐LVdc conversion in a single converter stage and, unlike many modular SST concepts, employs only a single medium‐frequency transformer.
Rafał Kopacz, David Menzi, Florian Krismer, Jacek Rąbkowski, Johann W. Kolar, Jonas Huber   +5 more
wiley   +1 more source

Investigation on a Novel Discontinuous Pulse-Width Modulation Algorithm for Single-phase Voltage Source Rectifier

, 2014
Single-phase voltage source converter (VSC) is an important power electronic converter (PEC), including single-phase voltage source inverter (VSI), single-phase voltage source rectifier (VSR), single-phase active power filter (APF) and single-phase grid ...
Yang, Xijun, Yougui Guo, Qu, Hao, Guo, Yougui, Xijun Yang, Hao Qu, Blaabjerg, Frede; id_orcid, Frede Blaabjerg   +7 more
core   +1 more source

Digital pulse width modulation techniques for power converters

, 2010
Electronic Thesis or DissertationRecently, digital controls are becoming dominant in almost every power electronic application because of the advantage when compared to analog control.
Arunachalam, Thanukamalam
core   +2 more sources

Current fluctuations reduction strategy based on optimal three‐space‐vector pulse‐width modulation for service‐life improvement of DC‐link electrolytic capacitors in three‐phase voltage‐source inverter system

IET Electric Power Applications, Volume 18, Issue 1, Page 128-140, January 2024.
Based on space voltage vector, a voltage vector combination was derived to minimise the capacitor current within a single switching cycle. Compared to the traditional SVPWM, experimental results have shown that the rms value of capacitor current can be reduced by up to 37%.
Peihe Li, Anwen Shen, Qipeng Tang, Xin Luo, Jinbang Xu   +4 more
wiley   +1 more source

Spectral characterisation of nk pulse position modulation format [PDF]

, 2005
nk pulse position modulation (PPM) is a new modulation format that has recently been proposed for the optical wireless channel. This Letter considers, for the first time, a full spectral characterisation of -PPM and presents original expressions, which
Cryan, R.A., Menon, M.
core   +1 more source