Effect of Voltage and Load Variations on Efficiencies of a Motor-Pump System

Kini, P. Giridhar; Bansal, R.C.

doi:10.1109/tec.2009.2032628

Cited by 31 publications

(14 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The issues with voltage fluctuation are well outlined in this study for developing a dependable system and enhancing driving characteristics. Infusion craters, severe pitting and fluting damage to machine bearings are caused by frequent voltage variations, resulting in a shorter lifespan [7][8][9]. The machine's thermal stress is increased by the uneven flux distribution in the airgap, which causes overheating of the rotor cage, as well as rotor material abrasion and dynamic stress on the shaft [10].…”

Section: Problem Overview and Its Significance In The Present Studymentioning

confidence: 99%

2D Finite Element Analysis of Asynchronous Machine Influenced Under Power Quality Perturbations

S¹,

Saranya²,

Indragandhi³

et al. 2022

Computers, Materials &Amp; Continua

View full text Add to dashboard Cite

Asynchronous machines are predominantly preferred in industrial sectors for its reliability. Power quality perturbations have a greater impact on industries; among the different power quality events, voltage fluctuations are the most common and that may cause adverse effect on machine's operation since they are longer enduring. The article discusses a numerical technique for evaluating asynchronous motors while taking into account magnetic saturation, losses, leakage flux, and voltage drop. A 2D linear analysis involving a multi-slice time stepping finite element model is used to predict the end effects. As an outcome, the magnetic saturation and losses are estimated using a modified 2D nonlinear time-stepping finite element formulation. The method takes the electromagnetic fields at the ends of the motor into account using limited computer resources. The proposed method will greatly reduce computation time with limited computer resources for analyzing the machine's performance with high precision. The analyzed findings assist in preventing voltage variance issues in the power network system and provide suggestions for developing a robust system.

show abstract

Section: Problem Overview and Its Significance In The Present Studymentioning

confidence: 99%

2D Finite Element Analysis of Asynchronous Machine Influenced Under Power Quality Perturbations

S¹,

Saranya²,

Indragandhi³

et al. 2022

Computers, Materials &Amp; Continua

View full text Add to dashboard Cite

show abstract

“…Besides, the loading condition can be affected by the integrated system such as air conditioning applications. For instance, the loading condition of air-conditioning compressor can be varied due to the change of flow rate of the air [13]. Considering a SPIM applicable to various application, a more quantitative investigation on the operating characteristics of SPIMs running under unbalanced operation is needed.…”

Section: Introductionmentioning

confidence: 99%

Comparison of Electromagnetic Characteristics of Single-Phase Induction Motor between Balanced and Unbalanced Operation under Different Loads

Park

2021

Energies

View full text Add to dashboard Cite

This paper varies load conditions in a single-phase induction motor and deals with consequent effects on the electromagnetic characteristics in terms of a balanced and unbalanced operation. Based on a balanced-load condition, the magnetic field, electromagnetic losses, magnetic torque are quantified by the time-stepping finite element method at six different loads. The spatial distribution of the air-gap magnetic field are investigated to characterize the existence between the load variation and unbalanced operation. The components of electromagnetic losses are analyzed in terms of main parameters degrading the operating efficiency according to the load variation. The result can show the importance of building the magnetic balance for a high performance, and the design guideline for SPIMs running at multiple operating points is discussed.

show abstract

“…Electric drives have a rated efficiency of 70 to 95% [4]. Most of medium and large centrifugal pumps offer rated efficiencies of 65 to 85% and even smaller [5]. Their product reveals the overall pumping station rated efficiency of usually much less than 75%.…”

Section: Introductionmentioning

confidence: 99%

“…Many researches in the field of fluid distribution published in recent years touch the problem of energy management. In [5][6][7], the efficiency was established as a major quality index. Several studies focus on the multi-pump stations as the suitable tool of energy saving.…”

Section: Introductionmentioning

confidence: 99%

“…Several studies focus on the multi-pump stations as the suitable tool of energy saving. Many of them underline an extremely important role of the variable-speed drives (VSD) in the conditions of supply instability and pipeline disturbances explained in details in [5,8] as well as in such functionalities as an accurate pumping speed adjustment, robust technology management, and fast data processing [9,10].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Predictive control of multi‐pump stations with variable‐speed drives

Vodovozov

Raud

2017

IET Electric Power Applications

View full text Add to dashboard Cite

The growing energy market and increasing energy costs require new solutions in pumping technology aiming to rise the energy efficiency. In the study, a novel centrifugal pump predictive control organisation is proposed. Unlike the traditional speed-oriented pump regulation, an efficiency-oriented approach is realised where the specific power loss in the motor drives are taken into account alongside the general pump and pipeline losses. The offered management strategy and algorithm are based on the prediction of optimal operating points using combined tabulated and analytical performance characteristics of a pumping station. Applying the efficiency distribution diagram, the control map has been designed intended for running the optimal number of pumps at the appropriate speeds. As a result, the system performance within one of the best efficiency regions is maintained now at all the requested head and pressure inputs and pipeline condition instabilities.

show abstract

Effect of Voltage and Load Variations on Efficiencies of a Motor-Pump System

Cited by 31 publications

References 24 publications

2D Finite Element Analysis of Asynchronous Machine Influenced Under Power Quality Perturbations

2D Finite Element Analysis of Asynchronous Machine Influenced Under Power Quality Perturbations

Comparison of Electromagnetic Characteristics of Single-Phase Induction Motor between Balanced and Unbalanced Operation under Different Loads

Predictive control of multi‐pump stations with variable‐speed drives

Contact Info

Product

Resources

About