Slip Compensation in Efficiency-Optimized Three-Phase Induction Motor Drive Systems

Sarhan, Hussein; Issa, Rateb; Alia, Mohammad; Assbeihat, Jamal M.

doi:10.4236/ica.2011.22011

Cited by 5 publications

(3 citation statements)

References 3 publications

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“…In [22] a slip compensator, based on fuzzy logic incremental controller has been developed to improve the steady state performance of efficiency-optimized three-phase induction motor drive system. Efficiency optimization here was accomplished by using a search controller manipulating the value of stator voltage, at which the efficiency is at its maximum for any operating point.…”

Section: Estimation Of the Scalar Speed Control Methodsmentioning

confidence: 99%

Performance Improvement of Pumps Fed by the Variable Speed Drives

Vodovozov¹,

Bakman²

2013

Electrical, Control and Communication Engineering

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-Speed inaccuracy decreases the pump efficiency, reliability, and energy saving. This research is devoted to the determination of the ways of accurate speed control of the pump drives operated under changeable loads. The impact of speed inaccuracy on the pump performance is studied. Based on the analysis of methods for the static accuracy improvement, the drawbacks of the traditional approaches have been shown with reference to the pumping applications. A new methodology of the slip compensation has been proposed for implementation to improve the scalar drive performance. It notably decreases the speed inaccuracy of the open-ended pumping applications. The enhanced quality of the drive control at different loading conditions has been shown on a laboratory test bench. Also, for the multi-pump systems this approach results in an additional benefit from the viewpoint of the operation around the best operation point providing a safe pump control both to exclude the pump damage and to improve the process quality.

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Section: Estimation Of the Scalar Speed Control Methodsmentioning

confidence: 99%

Performance Improvement of Pumps Fed by the Variable Speed Drives

Vodovozov¹,

Bakman²

2013

Electrical, Control and Communication Engineering

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“…In addition, the slip remained at zero thanks to the slip compensator part of the control system of the variable speed drive. This helps improve the operating performance of the induction motor [32].…”

Section: Dynamic Response Of the Control Systemmentioning

confidence: 99%

Comparative study by numerical simulation of two methods for automatic flow control in centrifugal pumps

Andrade-Cedeno

Pérez‐Rodríguez²,

Amaya-Jaramillo³

et al. 2022

IJPEDS

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Flow rate and pressure are variables of great interest in the process control industry, especially in pumping systems. With the help of modeling and simulation, it is possible to understand the operation of these systems prior to their construction, in addition to allowing their behavior to be analyzed in various operational scenarios and testing different control strategies. In this work, the hydraulic, mechanical, electrical and electronic models of the different components of the system are studied. Two study cases for automatic flow control are assembled, using Simscape library from MATLAB/Simulink R2019b. This study cases are: i) with a control valve and ii) with a variable speed drive. The simulations determined that both cases keep the flow constant in the face of pressure disturbances, with a good dynamic response. Case 2 consumes less power than case 1, between 24 and 64% less, especially at low flow rates. It also reduce unwanted mechanical and electrical problems due to sudden starts and stops. Case 2 produced harmonic pollution on both the grid and motor sides, which implies a potential risk for the motor and the electrical grid. Case 2 was experimentally validated, obtaining errors of less than 10%.

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“…The squirrel-cage motor derives its name from the shape in which its rotor is designed. The rotor of a squirrel-cage induction motor is made up of heavy copper bars which are joined together at each end by end rings, usually made of copper or brass [6]. These types of induction motors require three-phase supply for operation.…”

Section: Three-phase Squirrel-cage Induction Motorsmentioning

confidence: 99%

Design and Construction of a 3-Phase Induction Motor Wireless Control System

Owusu¹,

Amuzuvi²

2020

JEEE

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Infrared (IR) wireless transmission technology has proven to be reliable in electric motor control. The existing control schemes for electric motors require the operator to be at the location of the motors or resort to the use of wired controls. Wired motor controls can fail due to objects falling on them and accidental disconnections. Also, voltage drops in the control wires are wasted in generating heat and increase the cost of electricity tariffs. Further, there is increase in labour cost and installation of wired motor control. Additionally, there are slips, trips and fall hazards associated with control trailing wires. In this research, a wireless control system for a three-phase, 415 V, 50 Hz, squirrel-cage induction motor is designed, simulated and implemented. The issues of voltage drop in control wires is minimised because of the reduced wires involved with this control scheme, thereby improving on the motor efficiency. The transmitter transmits IR signal to the receiver. There is a phototransistor in the receiver that receives the IR signal, amplifies it and decodes it with the help of a microcontroller. The output from the microcontroller is used to regulate auto-transformers to control the three-phase voltage to the motor. The designed system can wirelessly start, stop and change the speeds of induction motor for three successive speed levels. The receiver senses signal from the transmitter within a distance of 9 m. The system is designed to switch the motor into standby mode and then proceed to speeds one, two, three and then finally stop the motor. The developed infrared-based wireless transceiver can be adopted to control a three-phase, 415 V, 50 Hz, squirrel-cage induction motor at remote and inaccessible areas such as water treatment and three-phase separation plants.

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Slip Compensation in Efficiency-Optimized Three-Phase Induction Motor Drive Systems

Cited by 5 publications

References 3 publications

Performance Improvement of Pumps Fed by the Variable Speed Drives

Performance Improvement of Pumps Fed by the Variable Speed Drives

Comparative study by numerical simulation of two methods for automatic flow control in centrifugal pumps

Design and Construction of a 3-Phase Induction Motor Wireless Control System

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