Electrical Motor Maintenance Techniques and Life Cycle Assessment- A Review with Case Studies

Ayyappan, G.; Nikhil, Narayanan K; Raja, Raghavan. M; Pandi, V. Ravikumar; Angel, T. S. Shiny; Babu, B. Ramesh

doi:10.1109/icpedc47771.2019.9036543

Cited by 12 publications

(3 citation statements)

References 20 publications

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“…It ensures accident-free modes and reduces electric power consumption. It appears that the methods for predictive maintenance, or life cycle assessment of induction motors, respectively, allow for operation under rated loads for longer periods of time [124].…”

Section: Improved Operational Maintenancementioning

confidence: 99%

Energy Efficiency of Induction Motor Drives: State of the Art, Analysis and Recommendations

Dinolova,

Ruseva,

Dinolov

2023

Energies

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Despite activities to introduce low-carbon energy sources worldwide, the share of conventional facilities burning organic fuels remains high. One approach to address this problem is to look for solutions to reduce energy consumption. There are various research projects in the area of energy efficiency that lead to diverse results—such as models, methodologies, new data and theories. On the other hand, induction motor drives are becoming a major consumer of electric power because of their wide range of applications. In this paper, after careful selection and systematization of 151 literature sources, an extensive study and criteria analysis of the existing state of affairs in the area of energy efficiency improvement of induction motor drives has been carried out. Five major and 48 minor research areas in this field have been identified. The results show that issues related to the adaptation of scientific results and the conditions for their effective and wide-ranging application in practice have not been discussed and investigated so far. Adaptation should take into account the possibilities of data acquisition, including data from measurements; the competences of energy managers; and the type of information provided to them. Based on the seven conclusions formulated below, summary recommendations are made to direct future research towards the justification of models for increasing the power efficiency of induction drives, adapted for use by energy managers.

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Section: Improved Operational Maintenancementioning

confidence: 99%

Energy Efficiency of Induction Motor Drives: State of the Art, Analysis and Recommendations

Dinolova,

Ruseva,

Dinolov

2023

Energies

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“…Low acquisition and maintenance cost compared to competing technologies; [22][23][24] The simple constructive characteristics make its manufacture simple compared to competing technologies; [25,26] Simple replacement due to a high degree of standardization of housings and connections; [27,28] Long service life; [29,30] A high degree of speed control using the variable speed drive (VSD), also enabling the saving of electrical energy; [31,32] Small dimensions can be used in compact places; [33] Does not produce sparking, making it easier to apply in classified areas (Ex areas); [34][35][36] High starting torque compared to other competing technologies; [25,26] Quiet compared to competing technologies; [37][38][39] There is no electrical contact between the rotor and the stator; the connection is made only by the bearings, thus giving high operating safety; [25,26] They can be powered directly by alternating current without the need for electronic converters; [25,26] Easy detection of faults of various natures (electrical, mechanical, thermal, and environmental) [40][41][42][43] Known production chain and easy access to the mineral resources necessary for the construction of SCIMs. They do not depend on high-volatility materials in the supply chain, such as, for example, the rare earth magnets present in permanent magnet synchronous electric motors (PMSMs).…”

Section: Advantages Referencesmentioning

confidence: 99%

A Performance Evaluation of Three-Phase Induction Electric Motors between 1945 and 2020

et al. 2022

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In the late 19th century, the three-phase induction motor was the central element of productivity increase in the second industrial revolution in Europe and the United States. Currently, it is the main load on electrical systems in global terms, reaching approximately 70% of electrical energy consumption in the industrial sector worldwide. During the 20th century, electric motors underwent intense technological innovations that enabled significant performance gains. Thus, this work analyses the performance changes in squirrel-cage rotor three-phase induction electric motors (SCIMs) with mechanical powers of 3.7 kW, 37 kW, and 150 kW and speed ranges corresponding to two poles and eight poles, connected to a low voltage at a frequency of 60 Hz and tested between 1945 and 2020. The study confirms accumulated performance gains of above 10% in some cases. Insulating materials for electrical conductors have gone through several generations (cotton, silk, and currently, varnish). Improvements to the housing for cooling, the bearings, the quality of active materials, and the design were the elements that enabled the high gains in performance. The first commercial two-pole SCIM with a shaft power of 4.4 kW was marketed in 1891, with a weight/power ratio of 86 kg/kW, and until the 2000s, this value gradually decreased, eventually reaching 4.8 kg/kW. Between 2000 and 2020, this ratio showed a reversed trend based on improvements in the performance of SCIMs. More active materials were used, causing the weight/power ratio to reach 8.6 kg/kW. The MEPS (minimum energy performance standards) of SCIMs had an essential role in the performance gain over the last three decades. Data collection was via tests at the Electrical Machines Laboratory of the Institute of Energy and Environment of the University of São Paulo. The laboratory has a history of tests on electrical equipment dating from 1911.

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“…LCA consists of a Life Cycle Inventory (LCI) analysis and Life Cycle Impact Assessment (LCIA), where LCI involves the compilation and quantification of inputs and outputs for a product throughout its life cycle. The adoption of LCA permits understanding and evaluating the magnitude and implication of the potential environmental impacts by considering all the steps related to the product's life, from the design to its re-use [7]. Therefore, recycling plays an important role in ecological aspects and economic savings.…”

Section: Introductionmentioning

confidence: 99%

Study of an Impact Mill-Based Mechanical Method for NdFeB Magnet Recycling

Pošković

Franchini

Ceroni

et al. 2023

Metals

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Nowadays, the circular economy is gaining more and more attention in sectors where the raw material supply is critical for both cost and geo-political reasons. Moreover, the environmental impact issue calls for recycling. From this perspective, the recovery of rare earth elements represents a strategic point. On the other hand, the high cost and the dangerous standard recovery methods that apply to NdFeB magnets limits options for traditional recycling. A new mechanical method is proposed, not requiring hydrogen, high temperature, or chemical processes, but instead using an impact mill designed to operate in vacuum. A traditional impact mill operating in a glove box filled with Ar atmosphere has also been used for comparison. The obtained NdFeB powders were analyzed in terms of magnetic properties and chemical composition, particularly in terms of the oxygen content.

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Electrical Motor Maintenance Techniques and Life Cycle Assessment- A Review with Case Studies

Cited by 12 publications

References 20 publications

Energy Efficiency of Induction Motor Drives: State of the Art, Analysis and Recommendations

Energy Efficiency of Induction Motor Drives: State of the Art, Analysis and Recommendations

A Performance Evaluation of Three-Phase Induction Electric Motors between 1945 and 2020

Study of an Impact Mill-Based Mechanical Method for NdFeB Magnet Recycling

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