Results 81 to 90 of about 74,738 (303)
Advanced Engineering Materials, EarlyView.Do not let thermal drift and instrument artifacts deceive high‐temperature nanoindentation results. We compare classical Oliver–Pharr and automatic image recognition analyses across steels and a Ni alloy to quantify these effects. Accounting for artifacts reveals systematic softening with temperature, while Cr and Ni additions boost resistance ...
Velislava Yonkova +2 more
wiley +1 more source
Ventilation System for AC Drive Express Passenger Electric Locomotives
机车电传动, 2017 In order to make the design of ventilation system for electric locomotives more correct and reasonable, calculations were made to the ventilation system, which focused on the traction motor ventilation system and the machine room micro-positive pressure ...
HAO Zhanhong +4 more
doaj
Advanced Engineering Materials, EarlyView.This review highlights advances in lightweight, lead‐free polymer nanocomposites for diagnostic X‐ray shielding. By linking filler chemistry, dispersion, architecture, and photon interaction mechanisms, it establishes structure–performance relationships guiding material design.
Aklilu G. Messele +2 more
wiley +1 more source
Research on Key Technologies of Traction System Based on Power Electronic Transformer
Kongzhi Yu Xinxi Jishu, 2017 This paper proposed a main circuit structure of a new traction drive system based on power electronic transformer (PET). Compared with traditional traction drive system, the new transmission system has lighter weight and smaller size , has more flexible ...
SONG Pinggang, GE Wang, ZHU Weichang
doaj
Model-based Predictive Torque Control for Matrix Converter Fed Induction Motor Drive with Reactive Power Mitigation [PDF]
هوش محاسباتی در مهندسی برقBecause of the inherent limitations of traditional AC-DC-AC converters, especially in electric motor drives, Matrix Converters (MCs), have attracted increasing attention as an alternative.
Matin Nabizadeh +2 more
doaj +1 more source
EMI in modern AC motor drive systems
, 2009 In this paper, several aspects of high frequency related\ud issues of modern AC motor drive systems, such as common mode\ud voltage, shaft voltage and resultant bearing current and leakage currents, have been discussed.
Zare, Firuz
core
Common mode voltage in a motor drive system with PFC
, 2010 Common mode voltage generated by a power converter in combination with parasitic capacitive couplings is a potential source of shaft voltage in an AC motor drive system.
Adabi Firouzjaee, Jafar +10 more
core +1 more source
Laser‐Induced Graphene from Waste Almond Shells
Advanced Functional Materials, EarlyView.Almond shells, an abundant agricultural by‐product, are repurposed to create a fully bioderived almond shell/chitosan composite (ASC) degradable in soil. ASC is converted into laser‐induced graphene (LIG) by laser scribing and proposed as a substrate for transient electronics.
Yulia Steksova +9 more
wiley +1 more source
Three-level Vector Control of Electrically Excited Synchronous Motor for Rolling Mill
Kongzhi Yu Xinxi Jishu, 2015 In accordance with the main drive systems of AC-AC and AC-DC-AC rolling mill, an air gap flux oriented vector control strategy was proposed for electrically excited synchronous motor to satisfy three-level AC-DC-AC system, which includes a mixed air gap ...
NAN Yonghui +4 more
doaj
Current Ripple Analysis of New Double-Stator AC Drive Systems
, 2015 This paper presents a current ripple analysis of new double-stator AC drive system. At first, a new double-stator AC drive system is proposed. The aim is to combine the benefits both the multilevel and multiphase system to provide the better performance ...
Afandi, A. N.; Universitas Negeri Malang +2 more
core +1 more source