Assessment of the energy efficiency estimation methods on induction motors considering real-time monitoring

Santos, Vladimir Sousa; Eras, Juan José Cabello; Gutiérrez, Alexis Sagastume; Cabello, M.

doi:10.1016/j.measurement.2018.12.080

Cited by 27 publications

(15 citation statements)

References 48 publications

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“…Induction motors account for around half of all global electric power use. They are built and designed for practical simplicity, unlike any other electrical counterparts; permanent magnets are unneeded, mostly are brushless, and have no commutator rings or position sensors [1]. Induction motors are also capable of self-starting operations.…”

Section: Introductionmentioning

confidence: 99%

Induction Motor DTC Performance Improvement by Reducing Flux and Torque Ripples in Low Speed

Zahraoui

Akherraz

Elbadaoui³

2022

Journal of Robotics and Control

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Since induction motors were invented, human civilization has changed forever. Due to their beneficial characteristics, induction motors are widely used and have become the most prevalent electrical counterparts. Many control strategies for induction motors have been developed, varying from scalar to vector control. In the class of vector control, the Direct Torque Control (DTC) was proposed as an alternative that ensures separated flux and torque control while remaining completely in a stationary reference frame. It offers direct inverter switching, reasonable simplicity than other vector control techniques, and less sensitivity to parameter variation. However, the use of hysteresis controllers in conventional DTC involves non-desired ripples in the system's flux and torque, which leads to bad system performances, primarily in low-speed operations. This paper aims to minimize the chattering and ensure the augmented system's performance in terms of robustness and stability. The proposed method is an improved version of DTC, which combines the addition of the Space Vector Machine (SVM) algorithm to the DTC and the increased number of DTC sectors that generate reference control voltages. Satisfactory results have been obtained by numerical simulation in MATLAB/Simulink. Eventually, the proposed method is proven to be a fast dynamic decoupled control that robustly responds to external disturbance and system uncertainties, especially in the low-speed range.

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Section: Introductionmentioning

confidence: 99%

Induction Motor DTC Performance Improvement by Reducing Flux and Torque Ripples in Low Speed

Zahraoui

Akherraz

Elbadaoui³

2022

Journal of Robotics and Control

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“…The three-phase asynchronous motors (TAM) are one of the most important loads in EPS since it is estimated that there are around 300 million of this equipment installed in industries [4], representing the consumption of around 43 to 46% of energy electricity worldwide and between 60 and 70% of energy in industries [5]- [7]. Due to the importance of TAMs, they have been the subject of numerous studies focused mainly on the improvement of the technology to increase the level of efficiency [8], [9], on control strategies in the TAMs drive system to guarantee maximum operating efficiency [10]- [12] and on methods for estimating TAM operational efficiency [13], [14] The importance of improving the modeling of TAMs in the simulation programs of EPS was evidenced by the blackout in the United States that occurred in 1996 and 2000 when millions of North Americans were without electricity for several hours [15]. In a study led by the "western electricity coordinating council," it was shown that the system in the affected area did not include the modeling of various TAMs and electronic loads, therefore, the behavior of the EPS could not be predicted correctly [16]- [18].…”

Section: Introductionmentioning

confidence: 99%

A new approach to three-phase asynchronous motor model for electric power system analysis

Solar

Montiel

Llanes

et al. 2021

IJPEDS

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In this paper, a new steady-state model of a three-phase asynchronous motor is proposed to be used in the studies of electrical power systems. The model allows for obtaining the response of the demand for active and reactive power as a function of voltage and frequency. The contribution of the model is the integration of the characteristics of the mechanical load that can drive motors, either constant or variable load. The model was evaluated on a 2500 kW and 6000 V motor, for the two types of mechanical load, in a wide range of voltage and frequency, as well as four load factors. As a result of the evaluation, it was possible to verify that, for the nominal frequency and voltage variation, the type of load does not influence the behavior of the powers and that the reactive power is very sensitive to the voltage variation. In the nominal voltage and frequency deviation scenario, it was found that the type of load influences the behavior of the active and reactive power, especially in the variable load. The results demonstrate the importance of considering the model proposed in the simulation software of electrical power systems.

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“…Induction motors (IMs) account for some 68% of the energy consumption of industry worldwide; thus, to reduce the global consumption of electricity, it is essential to improve their efficiency. Furthermore, improving the efficiency of IM and drive mechanical systems might reduce around 20%-30% of the energy consumption, also reducing some 10% of the overall electricity demand [2]. IM has one disadvantage, the fact that the mechanical speed of the machine is directly coupled to the frequency of the supply voltage, which limits its flexibility when supplied directly from the grid.…”

Section: Introductionmentioning

confidence: 99%

Harmonics Consequences on Drive Systems with Induction Motor

et al. 2020

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In the case of adjustable drives systems with an induction motor (IM), a harmonic regime is manifested, whose knowledge and analysis are always necessary. However, most studies are focused on specific drive systems, the results of these works being valid only for drive systems of the same type. The objective of the present paper was to determine the harmonics consequences not only on the technical characteristics of the IM but also on the power supply as well as on the mechanical drive system. Thus, by initiating a methodology for estimating the consequences of each voltage harmonic separately, the aim was to substantiate a generally applicable method, which allows the evaluation, for any application, of the overall effects of the harmonics. The main feature of the method used in this paper was the consideration of the presence of voltage harmonics in the stator voltage of the IM, of certain frequencies and with certain levels, and the determination of all the electrical and mechanical consequences on the model of the drive system. It has been found that the harmonics of the IM affects the power quality (PQ) of the power supply, having significant influences also on the mechanical part of the drive system.

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Assessment of the energy efficiency estimation methods on induction motors considering real-time monitoring

Cited by 27 publications

References 48 publications

Induction Motor DTC Performance Improvement by Reducing Flux and Torque Ripples in Low Speed

Induction Motor DTC Performance Improvement by Reducing Flux and Torque Ripples in Low Speed

A new approach to three-phase asynchronous motor model for electric power system analysis

Harmonics Consequences on Drive Systems with Induction Motor

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