scholarly journals A Comparative Study of Motor Stator Current Analysis and Instantaneous Power Analysis Techniques for the Diagnosis of Gear Faults under Medium Load Conditions

2018 ◽  
Vol 1 ◽  
pp. 77-81
Author(s):  
A. Alwadie ◽  
Keyword(s):  
Comparative Study ◽  
Power Analysis ◽  
Current Analysis ◽  
Analysis Techniques ◽  
Stator Current ◽  
Instantaneous Power ◽  
Instantaneous Power Analysis ◽  
Load Conditions

scholarly journals A Real Time Condition Monitoring System for Gears Operating under Variable Load Conditions

2018 ◽  
Vol 9 (2) ◽  
pp. 493
Author(s):  
Abdullah Alwadie
Keyword(s):  
Power Analysis ◽  
Detection Methods ◽  
Variable Load ◽  
Current Analysis ◽  
Invasive Approach ◽  
Stator Current ◽  
Instantaneous Power ◽  
Instantaneous Power Analysis ◽  
Operating Points ◽  
Load Conditions

Gears are important component of the rotational power transmission system and are largely used in variable load and speed applications. The faults on the gear generate excessive vibration which leads to breakdown of the machine. Sensor based methods could diagnose gear faults but proved to be expensive and have limited applications due to heavy cost and need of access of gear box for sensor installation.  The motor stator current analysis has been reported to overcome the drawbacks of the sensor based fault detection methods. However, motor stator current analysis has a limited capability for reliable detection of small gear fault signatures typically for low load conditions. This paper presents an alternative non-invasive approach based on instantaneous power analysis of the motor to reliably diagnose gear faults for variable load applications. The theoretical and experimental results indicates that the instantaneous power analysis offers three fault related harmonics and amplitude variations on these harmonics could give the indication of health status of the gear.<strong> </strong> The superiority of the proposed instantaneous power analysis technique has been confirmed through experiments performed on three operating points of the motor. The comparison of the amplitude sensitivity of the motor stator current and instantaneous power at three operating points has been performed to validate the superiority of the proposed technique.

An Online Fault Diagnosis System for Induction Motors via Instantaneous Power Analysis

2016 ◽  
Vol 60 (4) ◽  
pp. 592-604 ◽  
Author(s):  
Muhammad Irfan ◽  
Nordin Saad ◽  
Rosdiazli Ibrahim ◽  
Vijanth Sagayan Asirvadam ◽  
Muawia Magzoub
Keyword(s):  
Fault Diagnosis ◽  
Power Analysis ◽  
Induction Motors ◽  
Diagnosis System ◽  
Instantaneous Power ◽  
Fault Diagnosis System ◽  
Instantaneous Power Analysis

scholarly journals Condition monitoring of induction motors via instantaneous power analysis

2015 ◽  
Vol 28 (6) ◽  
pp. 1259-1267 ◽  
Author(s):  
Muhammad Irfan ◽  
Nordin Saad ◽  
Rosdiazli Ibrahim ◽  
Vijanth S. Asirvadam
Keyword(s):  
Condition Monitoring ◽  
Power Analysis ◽  
Induction Motors ◽  
Instantaneous Power ◽  
Instantaneous Power Analysis

Comparative Study of Induction Motor Stator Current Using FFT and Wavelet

2016 ◽  
Vol 4 (4) ◽  
pp. 1
Author(s):  
SAHNI JAYANTA KUMAR ◽  
SAHAY KULDEEP ◽  
SINGH SATYENDRA ◽  
◽  
◽  
...  
Keyword(s):  
Comparative Study ◽  
Induction Motor ◽  
Stator Current

scholarly journals Comparative Study of Dual PM Vernier Machines

2021 ◽  
Vol 12 (1) ◽  
pp. 12
Author(s):  
Huan Qu ◽  
Zi Qiang Zhu ◽  
Toru Matsuura ◽  
Dusan Ivanovic ◽  
Takashi Kato ◽  
...  
Keyword(s):  
Comparative Study ◽  
Open Circuit ◽  
Torque Density ◽  
Halbach Array ◽  
Higher Power ◽  
Pole Structure ◽  
Consequent Pole ◽  
Torque Ripples ◽  
Two Machines ◽  
Load Conditions

In this paper, two types of dual permanent magnet (PM) machines, i.e., stator slot dual-PM (SSDPM) machine and split-tooth dual-PM (STDPM) machine, are investigated and compared. Both machines have consequent pole structure with Halbach array PMs. Their difference lies in the position of stator PM. The SSDPM machine has Halbach array PMs in the stator slots, while the STDPM machine has PMs between the split teeth. Torque characteristics, i.e., average torques and torque ripples, of different slot/pole number combinations of the two machines are compared. The 24 stator slots/20 rotor slots/4 armature pole pair (24S20R4Pa) SSDPM machine with distributed windings and the 24 stator slots/10 rotor slots/4 armature pole pair (12S20R4Pa) STDPM machine with concentrated windings are compared under both open-circuit and on-load conditions. The results show that the SSDPM machine is more competitive by delivering higher torque density and higher power density.

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