Summary of the Generalised Theory of Electrical Machines as Applied to Synchronous Generators and Induction Motors

2005 ◽  
pp. 479-505
Keyword(s):  
Induction Motors ◽  
Electrical Machines ◽  
Synchronous Generators

scholarly journals Conceptual Framework of Antecedents to Trends on Permanent Magnet Synchronous Generators for Wind Energy Conversion Systems

Energies ◽  
2019 ◽  
Vol 12 (13) ◽  
pp. 2616 ◽  
Author(s):  
K. Padmanathan ◽  
N. Kamalakannan ◽  
P. Sanjeevikumar ◽  
F. Blaabjerg ◽  
J. B. Holm-Nielsen ◽  
...  
Keyword(s):  
Wind Energy ◽  
Energy Conversion ◽  
Conceptual Framework ◽  
Permanent Magnet ◽  
Electrical Machines ◽  
Special Focus ◽  
Electrical Machine ◽  
Synchronous Generators ◽  
Wind Energy Conversion ◽  
Permanent Magnet Synchronous Generators

Wind Energy Conversion System (WECS) plays an inevitable role across the world. WECS consist of many components and equipment’s such as turbines, hub assembly, yaw mechanism, electrical machines; power electronics based power conditioning units, protection devices, rotor, blades, main shaft, gear-box, mainframe, transmission systems and etc. These machinery and devices technologies have been developed on gradually and steadily. The electrical machine used to convert mechanical rotational energy into electrical energy is the core of any WECS. Many electrical machines (generator) has been used in WECS, among the generators the Permanent Magnet Synchronous Generators (PMSGs) have gained special focus, been connected with wind farms to become the most desirable due to its enhanced efficiency in power conversion from wind energy turbine. This article provides a review of literatures and highlights the updates, progresses, and revolutionary trends observed in WECS-based PMSGs. The study also compares the geared and direct-driven conversion systems. Further, the classifications of electrical machines that are utilized in WECS are also discussed. The literature review covers the analysis of design aspects by taking various topologies of PMSGs into consideration. In the final sections, the PMSGs are reviewed and compared for further investigations. This review article predominantly emphasizes the conceptual framework that shed insights on the research challenges present in conducting the proposed works such as analysis, suitability, design, and control of PMSGs for WECS.

Data acquisition system for induction motors with arduino

2019 ◽  
pp. 256-262
Author(s):  
Ali Sinan Cabuk
Keyword(s):  
Data Acquisition ◽  
Induction Motor ◽  
Induction Motors ◽  
Low Cost ◽  
Data Acquisition System ◽  
Electrical Machines ◽  
Acquisition System ◽  
Efficiency Measure ◽  
Collection System ◽  
Measurement Devices

Data acquisition systems have been used for many years in order to conduct analyses to increase efficiency, measure performance and detect failures in electrical motors.High costs and not being of modular use have prevented these systems from being commonly used. Various methods were developed for data acquisition from electrical machines. This paper presents data acquisition analysing and monitoring system using Arduino platform. Vibration, temperature and current values of a 3 phase induction motor are obtained by this data acquisition system via USB port. A system compatiable with all sorts of settings and of low cost was obtained as a result of using Arduino where data processing is conducted on a computer. Values obtained from the data collection system used in this study were found to be supportive to the values shown by the measurement devices from 3 phase induction motor.

scholarly journals Early Detection of Broken Rotor Bars in Inverter-Fed Induction Motors Using Speed Analysis of Startup Transients

Energies ◽  
2021 ◽  
Vol 14 (5) ◽  
pp. 1469
Author(s):  
Tomas A. Garcia-Calva ◽  
Daniel Morinigo-Sotelo ◽  
Vanessa Fernandez-Cavero ◽  
Arturo Garcia-Perez ◽  
Rene de J. Romero-Troncoso
Keyword(s):  
Induction Motors ◽  
Electrical Machines ◽  
Signature Analysis ◽  
Time Frequency ◽  
Stator Current ◽  
Analysis Methodology ◽  
Fault Severity ◽  
Motor Current Signature Analysis ◽  
Stationary Conditions ◽  
Current Signature

The fault diagnosis of electrical machines during startup transients has received increasing attention regarding the possibility of detecting faults early. Induction motors are no exception, and motor current signature analysis has become one of the most popular techniques for determining the condition of various motor components. However, in the case of inverter powered systems, the condition of a motor is difficult to determine from the stator current because fault signatures could overlap with other signatures produced by the inverter, low-slip operation, load oscillations, and other non-stationary conditions. This paper presents a speed signature analysis methodology for a reliable broken rotor bar diagnosis in inverter-fed induction motors. The proposed fault detection is based on tracking the speed fault signature in the time-frequency domain. As a result, different fault severity levels and load oscillations can be identified. The promising results show that this technique can be a good complement to the classic analysis of current signature analysis and reveals a high potential to overcome some of its drawbacks.

scholarly journals Evaluation of Whirling Speed of an Induction Motor

2019 ◽  
Vol 8 (3) ◽  
pp. 6895-6898
Keyword(s):  
Induction Motor ◽  
Natural Frequency ◽  
Solid Mechanics ◽  
Induction Motors ◽  
Rotor Dynamics ◽  
Electrical Machines ◽  
Design Stage ◽  
Theoretical Estimation ◽  
Key Factors ◽  
Proper Estimation

The whirling speed in rotor dynamics, with reference to solid mechanics, is the velocity that excites the natural frequency of rotating object or assembly. Proper estimation of this whirling speed is one of the key factors that are to be considered at design stage of electrical machines as induction motors. This research paper deals with estimation of whirling speed of an induction motor. The work involves theoretical estimation of whirling speed and its validation using ANSYS.

Algorithms and Methods for Induction Motors Performance Research Based on Testing Automation

2021 ◽  
Vol 26 (1) ◽  
pp. 84-91
Author(s):  
Ya.O. Teplova ◽  
Keyword(s):  
Energy Efficiency ◽  
Induction Motors ◽  
General Purpose ◽  
Electrical Machines ◽  
Motor Efficiency ◽  
Target Energy ◽  
Automated Tools ◽  
Technical Solutions ◽  
Performance Research ◽  
Selection Of

New electrical machines design assumes the execution of research and test-design works with a choice and selection of the effective technical solutions. The prototypes characteristics control is implemented by testing them in laboratory using the automated tools and methods. The automation provides relevant datasets for further analysis. In the paper the algorithms and methods for studying the general purpose induction motors performance characteristics have been proposed. The changes of dependence of the motor efficiency on the output power alterations, caused by using different technical solutions, have been studied. Based on experience of the electrical machines testing in a specialized laboratory, the task of evaluating the induction motors energy efficiency when operating in S1 mode (continuous duty) with overloads occurrence, has been formulated. A method for solving the problem based on the efficiency curves has been proposed. The results have been implemented in a computer program and can be used to improve the technical solutions, allowing an achievement of the target energy efficiency indicators.

The Analysis of Inverter-Fed Induction Motors

1976 ◽  
Vol 13 (4) ◽  
pp. 359-369 ◽  
Author(s):  
Johnm. D. Murphy
Keyword(s):  
Equivalent Circuit ◽  
Induction Motor ◽  
Induction Motors ◽  
Electrical Machines ◽  
Transient Conditions ◽  
Motor Operation

Induction motor operation with a six-step inverter supply is analysed in a manner suitable for existing courses in electrical machines. Steady harmonic torques and harmonic losses are examined by the equivalent circuit approach. The two-axis model is used to determine instantaneous torque and current waveforms and to study transient conditions.

scholarly journals Higher-Order Spectral Analysis of Stray Flux Signals for Faults Detection in Induction Motors

2020 ◽  
Vol 5 (2) ◽  
pp. 1-14 ◽  
Author(s):  
Miguel E. Iglesias Martínez ◽  
Jose A. Antonino-Daviu ◽  
Pedro Fernández de Córdoba ◽  
J. Alberto Conejero
Keyword(s):  
Signal Analysis ◽  
Induction Motors ◽  
Induction Machines ◽  
Point Of View ◽  
Electrical Machines ◽  
Standard Methods ◽  
Current Trends ◽  
Processing Techniques ◽  
Signal Processing Techniques ◽  
Theoretical Foundations

AbstractThis work is a review of current trends in the stray flux signal processing techniques applied to the diagnosis of electrical machines. Initially, a review of the most commonly used standard methods is performed in the diagnosis of failures in induction machines and using stray flux; and then specifically it is treated and performed the algorithms based on statistical analysis using cumulants and polyspectra. In addition, the theoretical foundations of the analyzed algorithms and examples applications are shown from the practical point of view where the benefits that processing can have using HOSA and its relationship with stray flux signal analysis, are illustrated.

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