Reduced Energy Consumption in Induction Motors with Possible Mechatronic Applications

2014 ◽  
pp. 219-228
Author(s):  
G. Calzada-Lara ◽  
J. Álvarez-Gallegos
Keyword(s):  
Energy Consumption ◽  
Induction Motors

scholarly journals Energy Efficiency Analysis of Fixed-Speed Pump Drives with Various Types of Motors

2019 ◽  
Vol 9 (24) ◽  
pp. 5295 ◽  
Author(s):  
Victor Goman ◽  
Safarbek Oshurbekov ◽  
Vadim Kazakbaev ◽  
Vladimir Prakht ◽  
Vladimir Dmitrievskii
Keyword(s):  
Energy Efficiency ◽  
Energy Consumption ◽  
Duty Cycle ◽  
Induction Motors ◽  
Electric Motors ◽  
Pump Unit ◽  
Permanent Magnet Synchronous Motors ◽  
Variable Flow ◽  
Synchronous Motors ◽  
Flow Pump

The paper presents a comparative analysis of energy consumption by 2.2 kW electric motors of various types and energy efficiency classes in the electric drive of a pump unit with throttle control in a water supply system. Line-start permanent-magnet synchronous motors of the IE4 energy efficiency class and induction motors of the IE4 and IE3 energy efficiency classes of various manufacturers were considered (IE4 and IE3 are labels of energy efficiency classes of electric motors according to IEC 60034-30-1 standard). Energy consumption at a hydraulic load changing under a typical duty cycle was calculated based on the nameplate data of the pump and electric motors. The developed method shows that selecting an electric motor based on the IE energy efficiency class under the IEC 60034-30-1 standard (i.e., based on efficiency at a rated load) may not provide the minimum energy consumption of a variable flow pump unit over a typical duty cycle. In particular, the considered IE4 class line-start permanent-magnet synchronous motors do not provide significant advantages over IE4 class induction motors, and sometimes even over IE3 class induction motors when they are used in variable flow pump units.

scholarly journals Comparative analysis of PD-PWM technique in the set: Multilevel Inverter-Induction motor

2020 ◽  
Vol 21 (1) ◽  
pp. 1-8
Author(s):  
Yesenia Reyes Severiano ◽  
Jesús Aguayo Alquicira ◽  
Susana Estefany De León Aldaco ◽  
Luis Mauricio Carrillo Santos
Keyword(s):  
Energy Consumption ◽  
Comparative Analysis ◽  
Induction Motor ◽  
Induction Motors ◽  
Electrical Energy ◽  
Power Converter ◽  
Multilevel Inverter ◽  
Motor Speed ◽  
Three Phase ◽  
Cascaded Multilevel Inverter

Currently, induction motors are widely used in industry because have a high potential for the efficiency improvement. Therefore, a topic of interest to the industry is to reduce the energy consumption of induction motors, as they represent almost half of the total electrical energy consumption in the world. The energy consumption of electric motors can be reduced by using motors that are more efficient and by using power converters to feed the motors, thereby enabling accurate control according to the load. The function of the power converter is to modify the intrinsic characteristics of the induction motor (speed and torque). There are different topologies of the power converter commonly called inverter for induction motors. An inverter requires a modulation strategy for its operation, there are several modulation strategies that are used in the induction converter-motor assembly. This paper presents the comparative analysis of the influence of the phase disposition modulation (PD-PWM) strategy with different modulation indices, on parameters related to the output signal of a seven-level cascaded multilevel inverter as well as on the nominal working conditions of a three-phase induction motor.

scholarly journals Analysis of the payback period of a modernized pump unit with induction electric motors of advanced energy efficiency classes

2021 ◽  
pp. 15-19
Author(s):  
V.V. Goman ◽  
V.A. Prakht ◽  
V.M. Kazakbaev ◽  
V.A. Dmitrievskii ◽  
E.A. Valeev ◽  
...  
Keyword(s):  
Energy Efficiency ◽  
Energy Consumption ◽  
Induction Motor ◽  
Induction Motors ◽  
Power Grid ◽  
Payback Period ◽  
Pump Unit ◽  
Operating Period ◽  
Operating Cycle ◽  
Electricity Costs

Aim. The comparative analysis of energy consumption, electricity costs during lifetime cycle and payback period of a pump unit with 90 kW 2-pole induction motors, belonging to various energy efficiency classes, feeding directly from power grid. Methods. The examined operating modes aligned with a typical operating cycle of a pump unit with approximately constant flow rate of 75-110 % of the rated flow. The calculations were based on the pump and induction motors nameplate data, which, in their turn, were based on the manufacturers’ experimental data. Results. The calculations of energy consumption, electricity costs and payback periods of a pump unit with 90 kW 2-pole induction motors, feeding directly from power grid have been performed in the article. The application of induction motors belonging to IE2, IE3 and IE4 energy efficiency classes has been discussed. Practical value. It has been demonstrated, than in case of replacement of an induction motor of energy efficiency class IE2 due to planned retrofit, payback period for an IE4 induction motor is 2.18 years, energy savings within a calculated 20-year operating period are 268MW·h, which makes €41110 in money terms. Under the same conditions, the replacement of an induction motor of energy efficiency class IE2 with an induction motor of energy efficiency class IE3 will allow to save 88 MW·h within a calculated operating period, which, expressed in monetary terms, is €13500 and the payback period is 5.11 years. Thus, the article proves that despite a higher initial price, the choice of an induction motor of energy efficiency class IE4 tends to be more economically advantageous.

Lay Perceptions of Energy Consumption

2009 ◽  
Author(s):  
Shahzeen Z. Attari ◽  
Michael L. DeKay ◽  
Cliff I. Davidson ◽  
Wandi Bruine de Bruin
Keyword(s):  
Energy Consumption ◽  
Lay Perceptions

Study on Energy Consumption by Land Cargo Transportation

ICCTP 2009 ◽  
2009 ◽  
Author(s):  
Shunquan Huang ◽  
Siqin Yu ◽  
Zhongmin Liu
Keyword(s):  
Energy Consumption ◽  
Cargo Transportation
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