Results 61 to 70 of about 1,969 (191)

Multilevel Multiphase Space Vector PWM Algorithm With Switching State Redundancy

IEEE Transactions on Industrial Electronics, 2009
Multilevel multiphase technology combines the benefits of multilevel converters and multiphase machines. Nevertheless, new modulation techniques must be developed to take advantage of multilevel multiphase converters. In this paper, a new space vector pulsewidth modulation algorithm for multilevel multiphase voltage source converters with switching ...
López Sánchez, Óscar, Álvarez Ruiz de Ojeda, Luis Jacobo, Doval Gandoy, Jesús, Freijedo Fernández, Francisco Daniel   +3 more
openaire   +2 more sources

Ultralow‐Backscattering Induced Mode Splitting in Chipscale Valley Photonic Topological Cavities

Laser &Photonics Reviews, EarlyView.
The proposed in‐situ metrology based on mode splitting quantifies the ultralow backscattering of topological valley edge states at a single sharp corner, demonstrating near‐lossless topological transport (0.09 dB/corner) on a silicon chip. This work provides insight into the robustness of the photonic valley system and shows the great potential of ...
Kaiji Chen, Wenhao Wang, Yi Ji Tan, Zhonglei Shen, Ridong Jia, Ranjan Singh   +5 more
wiley   +1 more source

Novel SVPWM based on first order equation

Journal of Electrical Systems and Information Technology, 2015
PWM plays an important role in generating sinusoidal waveform for variable voltage variable frequency drives (VVVFD's) with a minimum harmonic level.
Ahmed A. Mansour
doaj   +1 more source

Modulation Strategies for Three-phase Four-leg Inverter

Kongzhi Yu Xinxi Jishu, 2015
It summarized the common modulation strategies for three-phase four-leg inverter, especially the methods of hysteresis current pulse modulation(HCPM), PWM and three-dimensional space vector PWM(3D-SVPWM).
HUANG Penghui, FENG Jianghua, ZHANG Zhixue   +2 more
doaj  

Space-Vector PWM With Common-Mode Voltage Elimination for Multiphase Drives

IEEE Transactions on Power Electronics, 2016
Switching common-mode voltage (CMV) generated by the pulse width modulation (PWM) of the inverter causes common-mode currents, which lead to motor bearing failures and electromagnetic interference problems in multiphase drives. Such switching CMV can be reduced by taking advantage of the switching states of multilevel multiphase inverters that produce ...
Oscar Lopez, Jacobo Alvarez, Jano Malvar, Alejandro G. Yepes, Ana Vidal, Fernando Baneira, Diego Perez-Estevez, Francisco D. Freijedo, Jesus Doval-Gandoy   +8 more
openaire   +3 more sources

Reduced Common Mode Voltage PWM Strategy With Optimized Switching Sequence for Three Phase Motor Drives

IEEE Access
This paper proposes a pulse width modulation (PWM) switching sequence strategy aimed at minimizing common-mode voltage (CMV) in three-phase motor drive systems.
Suji Seo, Sehwan Kim, Hyeon-Jae Shin, Cheewoo Lee, Jae Suk Lee   +4 more
doaj   +1 more source

Review of recent trends of advancements in multilevel inverter topologies with reduced power switches and control techniques

IET Power Electronics, EarlyView.
Some of the topologies with a fewer number of power switches are reviewed and scrutinized. An extensive analysis of the topologies, control strategy and applications are presented here, suggesting suitable multilevel inverter solutions to the known industrial application or new research.
Anurag Choudhary, Rohit Kumar, Shimi Sudha Letha, Farhad Ilahi Bakhsh, Arshdeep Singh, Mohammad Junaid Khan   +5 more
wiley   +1 more source

A Three-level Space Vector PWM Strategy Based on Variable Virtual Middle Vector

Kongzhi Yu Xinxi Jishu, 2018
T-type three-level topology has been widely applied in power converters for its high efficiency and low output harmonics, and the performance of this converter is determined by the effect of its capacitor neutral point voltage control.
LIN Zhenjun, LIU Yongjiang, LI Hua, LIU Haitao, LI Congda, XUE Xin   +5 more
doaj  

Multi-Level Voltage Space Vector Structure Based Control Strategy With Reduced Torque Ripple for Open-End Winding BLDC Motor Drives

IEEE Access
This article presents a new multi-level voltage space vector structure-based control scheme for dual inverter-fed open-end winding BLDC (OEW-BLDC) motor drives, incorporating peak current control.
U. Hari Krishna, P. P. Rajeevan
doaj   +1 more source

Fault diagnosis method of a cascaded H‐bridge inverter based on a multisource adaptive fusion CNN‐transformer

IET Power Electronics, EarlyView.
The multisource adaptive fusion CNN‐transformer method proposed in this study can provide theoretical and technical support for fault diagnosis of high‐voltage MCHBI. It has a promising potential for engineering applications. Abstract In high‐voltage applications, the number of cascaded H‐bridge inverter units is large, the failure probability ...
Weiman Yang, Weinian Wang, Xinggui Wang, Jianfeng Gu, Zhuoling Wang   +4 more
wiley   +1 more source