Results 1 to 10 of about 683,468 (115)

Effect of valve opening on starting performance of pump as turbine [PDF]

open access: yesPLoS ONE, 2023
The study on transient characteristics of pump as turbines during atypical startup has not been deeply explored yet. In order to reveal the transient characteristics of a small centrifugal pump reversing as turbine during startup process in this paper ...
Yu-Liang Zhang, Jin-Fu Li, You-Qu Zheng
doaj   +3 more sources

Influence of Control and Structure Parameters on the Starting Performance of a 12/8 Pole Switched Reluctance Motor

open access: yesEnergies, 2020
To investigate the influence of control and structure parameters on the starting performance of a switched reluctance motor, a 12/8 pole switched reluctance motor is analyzed in this paper.
Jichao Han   +4 more
doaj   +3 more sources

New Approach to Improve Starting Performance of Induction Motor Based on Optimal Starting Frequency

open access: yesIEEE Access
The starting performance of induction motor (IM) has a prominent influence on the redundancy design and cost control of motor drivers. To make the starting torque as high as possible under the special setting of starting current, a new approach for ...
Haixu Chen   +4 more
doaj   +3 more sources

Experimental study of the effects of turbine solidity, blade profile, pitch angle, surface roughness, and aspect ratio on the H‐Darrieus wind turbine self‐starting and overall performance

open access: yesEnergy Science & Engineering, 2019
New and comprehensive time‐accurate, experimental data from an H‐Darrieus wind turbine are presented to further develop our understanding of the performance of these turbines with a particular focus on self‐starting. The impact of turbine solidity, blade
Longhuan Du   +2 more
doaj   +2 more sources

Optimal starting frequency of three‐phase induction motor

open access: yesIET Electric Power Applications, 2022
In its applications, the starting performance of a 3‐phase induction motor (IM) is very important. The starting torque of the motor should be as high as possible within the safe current range of the motor driver.
Haixu Chen, Chao Bi
doaj   +1 more source

Effects of Cowl Lip Angle on Starting Performances for a Mixed-Compression Two-Dimensional Axisymmetric Hypersonic Inlet

open access: yesApplied Sciences, 2022
The third quasi-uniform B-spline was adopted to design the cowl profiles with various cowl lip angles. Starting performances were simulated by the numerical method and the results showed that the starting processes for different cowls can be classified ...
Yunfan Zhou, Shangcheng Xu, Yi Wang
doaj   +1 more source

Champion Position Analysis in Short Track Speed Skating Competitions From 2007 to 2019

open access: yesFrontiers in Psychology, 2021
Purpose: Short track speed skating is a racing sport with racing tactics are equally crucial to speed and technical skating skills. Therefore, to investigate the relationship between starting and finishing positions for elite skaters and subsequently ...
Lixin Sun   +3 more
doaj   +1 more source

ROTOR STRUCTURE WITH DOUBLE CAGE FOR IMPROVED SYNCHRONOUS CAPABILITY OF LINE-START PERMANENT MAGNET SYNCHRONOUS MOTORS

open access: yesТехнічна електродинаміка, 2020
Line start permanent magnet synchronous motors (LSPMSMs) have a problem of synchronization. In this paper the rotor of LSPMSM with double cage is proposed to improve synchronous capability of the motor. Key factors concerning the starting performance and
Hongbo Qiu   +3 more
doaj   +1 more source

Performance analysis of speed adjustable magnetic coupling with high starting torque

open access: yesMeikuang Anquan, 2023
In order to improve the start-up ability of speed adjustable magnetic coupling, the maximum starting torque of the magnetic coupling was studied. We analyze the magnetic circuit structure of the variable speed magnetic coupling, study the method of ...
LIU Hao, ZHANG Jianzhong, MA Zhiyong, ZHOU Zhiwei
doaj   +1 more source

Flow Coefficient and Starting Performance Prediction of Variable Geometry Curved Axisymmetric Inlet

open access: yesAerospace, 2023
With the development of combined cycle engines, it is urgent to estimate more quickly and accurately the flow capture capacity and starting performance of variable geometry inlets over a wide Mach number range.
Yongzhou Li   +3 more
doaj   +1 more source

Home - About - Disclaimer - Privacy