Results 21 to 30 of about 329 (152)
Kongzhi Yu Xinxi Jishu, 2016 Aiming at the problems of embedded permanent magnet synchronous motor at low switching frequency, such as current distortion of high speed deep weak magnetic field and large torque ripple, it analyzed the inhibitory effect of conventional motor control ...
ZANG Xiaodi, TIAN Dewen
doaj +2 more sources
Application of Subsection Modulation Technique on Diesel Locomotive Converter
机车电传动, 2014 According to the restriction of switching frequency in diesel locomotive converter, a subsection modulation technique was used, the transitive strategy was proposed to realize smooth transition of individual modes including the asynchronous PWM ...
LI Yan, YU Hua, LI Guofeng, ZHAN Zhejun
doaj +2 more sources
机车电传动, 2015 Mathematic model of ambipolar selected harmonic elimination PWM was explained briefly. The nonlinear surmounting equations of eliminating the specified harmonic were provided, and the new resolving methods for these equations were discussed, and the key ...
CHEN Jianfeng +4 more
doaj +2 more sources
Optimization of the Harmonic in AC Drive Locomotive and EMUs
Kongzhi Yu Xinxi Jishu, 2016 Harmonic content is one of the most important indexes in AC drive locomotive and EMUs. It firstly introduced four types of on-board passive filters and their working principles, such as series inductance, LCL filter, RC filter, RLC filter and so on ...
ZHANG Zhibing, ZHANG Zhixue, CHEN Zhibo
doaj +2 more sources
LCL Grid Filter Design of a Multi-Megawatt Medium-Voltage Converter for Offshore Wind Turbine using SHEPWM Modulation [PDF]
, 2015 El artículo analiza el rediseño del filtro LCL en un convertidor de media tensión para turbinas eólicas mediante la modulación SHEPWM. A diferencia de la modulación PDPWM, que limita el diseño del filtro debido a armónicos de baja frecuencia, SHEPWM ...
Zubimendi, Ignacio +5 more
core +2 more sources
IET Power Electronics, Volume 16, Issue 14, Page 2336-2355, 4 November 2023., 2023 This paper implements Broyden's Method Assisted Differential Evolution algorithm for eliminating third and fifth harmonics in the output voltage of 7‐level cascaded H‐Bridge multilevel inverter (CHB‐MLI) using selective harmonic elimination technique. Calculations of switching angles are done for various modulation index values (M).
Mohd Ahsan +6 more
wiley +1 more source
IET Electric Power Applications, Volume 17, Issue 7, Page 906-917, July 2023., 2023 1. Low switching frequency modulation is important for a high‐power voltage source converter. 2. The proposed hybrid modulation with a new smooth switching way can achieve good output performance and high dynamic response. Abstract For high‐power converters, the low switching frequency (SF) modulation represented by selective harmonic elimination pulse
Bo Guan, Xuyang Yan
wiley +1 more source
THD Reduction of Improved Single Source MLI Using Upgraded Black Widow Optimization Algorithm
International Transactions on Electrical Energy Systems, Volume 2023, Issue 1, 2023., 2023 An upgraded Black Widow Optimization algorithm for obtaining the ideal switching angles of a reduced structure multilevel inverter is proposed in this paper with minimum voltage THD. The conventional BWO algorithm has been modified and proposed to solve the THD minimization problem with faster convergence rate, lesser tuning variables, and lesser ...
Rupali Mohanty +5 more
wiley +1 more source
SHEPWM-Based Dead-Zone Control for PMSM under Low Switching Frequency
, 2023 Nowadays, permanent magnet synchronous motor (PMSM) has attracted extensive attention because of the high power density, high torque inertia ratio, etc., but PMSM presents poor performance under low switching frequency.
Zhang, Qi, Wang, Chenxu, Yang, Kehu
core +1 more source
An Overview on Multi‐Level Inverter Topologies for Grid‐Tied PV System
International Transactions on Electrical Energy Systems, Volume 2023, Issue 1, 2023., 2023 Over the years, multi‐level inverter (MLI) usage has increased widely for several applications like motor drives, renewable energy source‐ (RES‐) fed grids, and electric vehicles (EVs). In recent scenarios, the development of RES, grids, and EVs is in advanced mode, and this became the reason for innovations in recent MLI topologies. The new topologies
Paneti Anjaneya Vara Prasad +2 more
wiley +1 more source