New technology trends and policy needs in energy efficient motor systems - A major opportunity for energy and carbon savings

Energy efficiency measures in electric motor systems are scarcely implemented, and previous literature has largely overlooked the characterizing factors responsible for their adoption in industrial operations. The present study, after a comprehensive literature review, aims at supporting research by offering a framework for the identification of the factors that should be assessed when considering the adoption of electric motor systems' energy efficiency measures. The proposed factors are clustered in ten categories, namely: contextual factors, compatibility, economy, energy savings, production-related factors, operations-related factors, synergies, complexity, personnel and additional technical factors. After a preliminary empirical validation, the proposed framework has been applied in a selected sample of manufacturing firms. Findings show that factors more closely related to the firm's production and operations result most critical for the adoption of energy efficiency measures. However, the adoption process is also deeply influenced by their complexity or compatibility to the specific context application, therefore calling for an exhaustive assessment. The adoption of the framework would have reversed some firm's decisions over the initial uptake of EEMs that proved to have critical issues for their implementation. Therefore, the proposed framework provides additional support and further value to decision-makers especially for non-energy intensive firms, where the impact on non-energy production resources becomes more important, and SME usually present greater difficulties for a holistic assessment of EEMs. The study concludes with main implications for research and policy-making from the present study as well as suggestions for future research.

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“…I +S [113,[116][117][118][119][120] Motor size Motor size (power) for EEMs considerations. I+S [49,113,116…”

Section: Motor Modelmentioning

confidence: 99%

Identification and characterization of decision-making factors over industrial energy efficiency measures in electric motor systems

Accordini

Cagno

Trianni

2021

Renewable and Sustainable Energy Reviews

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“…By 2030, economies of up to 1.830 TWh/ year and a total accumulated savings for around 1.830 TWh/ year and a total accumulated economy of more than 11 TWh according to the Brazilian Ministry of Mines and Energy are expected [3], [10]. Analyses and suggestions on new policies for induction motors, considering the life cycle cost and the best available technologies in the market for the induction motors, are presented in [11]- [13] Despite the benefits that the new regulation brings with the minimum efficiency level, motor already installed are not included in the ordinance. Brazil has around 20.1 million electric motors installed in the residential, commercial and industrial sectors [14], the average-life of electric motors varies in the range of 10-20 years according to the nominal power, as well as the operating conditions and energy supply power quality.…”

Section: Brazilian Induction Motor Regulationmentioning

confidence: 99%

Assessing Voltage Unbalance Conditions in IE2, IE3 and IE4 Classes Induction Motors

et al. 2020

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Brazil has started an energy transition process through more efficient electric motors. The new legislation determining the IE3 Class as the minimum efficiency level in commercial electric motors became valid in August 2019. Currently, four induction motor classes are defined by the IEC 60034-30-1, with the IE4 class being the most efficient, and in the same way, proposals to achieve IE5 efficiency class are available in the market. Considering the upcoming new technologies, it is necessary to know the impact of power systems disturbances in IM's in view of future substitutions. This paper presents a detailed analysis of the impact of different percentages of under and over voltage unbalances on the temperature and performance of electric motors classes IE2, IE3 and IE4. Results show that the IE4 hybrid motor presents non-linear characteristics, being observed this motor shows less dependence on voltage variation, mainly undervoltage unbalance. An analysis of how this phenomenon impacts on the current harmonic distortions in the induction motors operation is also developed through Spearman's correlation matrices. Finally, models that represent the temperature increase of each motor with different voltage unbalance conditions are presented.

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“…The new IE5 class has not yet been defined in detail but is planned for potential products in a future edition of the standard. For IE5 electric motors called Ultra-Premium Efficiency, the goal is to reduce losses by about 20% compared to the IE4 class [14,15]. Some manufacturers already offer IE5 class electric motors.…”

Section: Introductionmentioning

confidence: 99%

“…Table 1 presents the description of the components in Figure 1 and the approximate typical efficiency of each one of them. -Labels and MEPS for these devices tend to be stabilized by the theoretical limits of the dominant technologies so that the following improvements will come through new technologies in the case of electric motors [14,19], replacing the traditional three-phase Induction Motors with Squirrel Cage Rotor (SCIMs), by Permanent Magnet Synchronous Motors (PMSM), and by Motors Synchronous Reluctance (SynRM), to achieve the highest levels of IE4 and the future IE5 [20,21].…”

Section: Introductionmentioning

confidence: 99%

Energy Efficiency Indicators for Water Pumping Systems in Multifamily Buildings

et al. 2021

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With the current concerns about sustainable development and energy consumption in buildings, water pumping systems have become essential for reducing energy consumption. This research aims to develop guidelines for the energy assessment of water pumping systems in multifamily buildings. The methodological procedures are: (i) definition of the efficiencies of electric motors; (ii) definition of pump efficiency levels; (iii) determination of energy consumption; and (iv) construction of the efficiency scale and guidelines for projects and assessments. The results obtained were that centrifugal pumps with 40% efficiency have higher energy consumption, regardless of the efficiency class of the electric motors, showing a 20% increase in electrical energy consumption. Lower efficiencies directly impact the energy efficiency rating of the water pumping system. Thus the 40% efficiency obtained energy efficiency rating “Very Low—VL” for all motor efficiency classes (between IE1 and IE5). At 60% efficiency, the energy efficiency level of the system was “Average—A”, gradually increasing to “Very High—VH”, as the energy consumption in the pumps decreased and the motors’ energy efficiency classes increased. It is concluded that designers and professionals in the area must consider the efficiency of the pumps, as they play a fundamental role in the classification of the system’s energy efficiency. It is also recommended to verify the energy efficiency of the water pumping system and implement design guidelines so that the pumping system achieves lower energy consumption, contributing to the building’s energy efficiency and sustainability.

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New technology trends and policy needs in energy efficient motor systems - A major opportunity for energy and carbon savings

Cited by 49 publications

References 17 publications

Identification and characterization of decision-making factors over industrial energy efficiency measures in electric motor systems

Identification and characterization of decision-making factors over industrial energy efficiency measures in electric motor systems

Assessing Voltage Unbalance Conditions in IE2, IE3 and IE4 Classes Induction Motors

Energy Efficiency Indicators for Water Pumping Systems in Multifamily Buildings

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