3 phase AC motor starting methods: an analysis of reduced voltage starting characteristics

Blair, Thomas Howard

doi:10.1109/secon.2002.995582

Cited by 7 publications

(2 citation statements)

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“…All starting methods aim to reduce the voltage drop on the industrial grid to ensure the smooth starting of the driven equipment while maintaining sufficient acceleration torque. There are several methods used in the practice of induction motor starting [27][28][29][30][31]. Two are most often used.…”

Section: The Starting Methods Of MV Induction Motorsmentioning

confidence: 99%

Power Compatibility of Induction Motors in Industrial Grids Containing Synchronous Generators

Varetsky,

Gajdzica

2024

Energies

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Starting an induction motor causes voltage sag in the industrial grid that may disturb the operation of grid equipment. Direct-on-line starting is the simplest and most cost-effective method for starting induction motors, but also the most problematic. Large industries often use internal power plants with synchronous generators and starting powerful motors may impact the generator operations. The synchronous generators could be operated with the automatic or manual mode of voltage control. As the operation experience proves, the generator voltage control mode has a significant impact on the transient behaviours in the industrial power grid when starting a large induction motor. This article presents a case study of the synchronous generator tripping within a true medium-voltage industrial grid during the direct-on-line starting of a large induction motor driving the feed water pump. An analysis of the generator protection logs after the tripping showed that the synchronous generator was controlled in manual mode and its protection relay settings were exceeded. The transients initiated by induction motor starts were studied for possible configurations and operating conditions of the grid using a model developed on the Matlab/Simulink Software platform. The simulations have shown that concern about starting large motors in industrial grids containing internal synchronous generators needs to be solved considering the grid configurations and the coordination of generator protection and control devices.

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Section: The Starting Methods Of MV Induction Motorsmentioning

confidence: 99%

Power Compatibility of Induction Motors in Industrial Grids Containing Synchronous Generators

Varetsky,

Gajdzica

2024

Energies

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“…Especially starting force and exciting current are higher than one in stable state, because there are end effects and big air-gap between stator and mover. Consequently many efforts about studying the starting characteristics of linear motor have been deployed [3] [4]. This paper numerically analyze the starting characteristic of an existing tubular linear motor used as lift model and calculate running parameters such as thrust force, mover's velocity and displacement，and magnetic flux density in air gap using finite element analysis method [5].…”

Section: Introduction (Heading 1)mentioning

confidence: 99%

Numerical Analysis of Starting Characteristic of Tubular Linear Induction Motor Based on Finite Element Method

Yang

Feng-lian

Yang

2010

2010 International Conference on Electrical and Control Engineering

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The starting process of Tubular Linear InductionMotor is simulated dynamically on the basis of two-dimensional (2-D) finite element analysis method and the parameters are calculated and analyzed numerically, such as starting thrust force, magnetic field density, flux linkage, velocity and placement of mover as well as magnetic flux density in the air gap, etc. The computing results indicate that thrust force and magnetic flux density in starting process is greater than one in stable progress, and varies of thrust force is along with the mover's materials. The calculating results are available for further studying of tubular linear induction motor and its controlling system．

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Research on Discrete Variable Frequency soft starting and electricity-economizing control system of induction motor

Xiao-bin

2011

2011 International Conference on Electric Information and Control Engineering

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3 phase AC motor starting methods: an analysis of reduced voltage starting characteristics

Cited by 7 publications

References 0 publications

Power Compatibility of Induction Motors in Industrial Grids Containing Synchronous Generators

Power Compatibility of Induction Motors in Industrial Grids Containing Synchronous Generators

Numerical Analysis of Starting Characteristic of Tubular Linear Induction Motor Based on Finite Element Method

Research on Discrete Variable Frequency soft starting and electricity-economizing control system of induction motor

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