Induction motor pre-excitation starting based on vector control with flux linkage deviation decoupling

Fan, Bo; Cao, Zhe; Jingzhuo, Shi

doi:10.21595/jve.2020.21635

Cited by 3 publications

(3 citation statements)

References 17 publications

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“…Based on the essence of magnetic field control, Cao et al scholars achieved smooth motor starting by vector control and establishing a flux chain that can ensure stable amplitude and direction. The results indicated that this method effectively reduced peak current and had good application performance [14].…”

Section: Related Workmentioning

confidence: 92%

Influence of electromagnetic transient physical models considering characterization characteristics on capacitive voltage transformers

Geng,

Yang,

et al. 2024

Archives of Electrical Engineering

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The equivalent circuit of traditional capacitive voltage transformers often faces the problem of complex data calculation and difficulty in grasping the internal nonlinear characteristics of transformers when constructing broadband models, resulting in poor power accuracy and stability. Therefore, with the help of electromagnetic transient physical models, the admittance sub model and nonlinear model are established by considering the frequency and saturation characteristics of the transformer. Based on the characteristics of capacitive voltage transformers, the model is processed in parallel to obtain a broadband coupling transformer model. The results showed that the error between the simulated current peak amplitude and voltage results of the model and the measured values was less than 2% and 1%, respectively. In the fault results, the harmonic error of the load voltage of the improved transformer was relatively small, far less than the error result of 2.73% of the traditional transformer. The proposed transformer model can better characterize its characteristics and has good transient response ability, providing reference tools and value for the operation and state detection of power systems.

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Section: Related Workmentioning

confidence: 92%

Influence of electromagnetic transient physical models considering characterization characteristics on capacitive voltage transformers

Geng,

Yang,

et al. 2024

Archives of Electrical Engineering

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“…It is urgent to consider increasing the technical requirements such as primary frequency modulation and highvoltage ride through capacity of wind farms. At the same time, the technical terms such as grid adaptability and lowvoltage ride through capacity also need to be modified and improved [7] .…”

Section: Virtual Inertia Control Of Variable Speed Wind Turbinementioning

confidence: 99%

Grid connected frequency control method of AC excitation variable speed constant frequency wind turbine

Fan

2023

Sixth International Conference on Advanced Electronic Materials, Computers, and Software Engineering (AEMCSE 2023)

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Aiming at the problem that the current grid connected frequency control effect of wind turbines is poor, the grid connected frequency control method of AC excited variable speed constant frequency wind turbines is proposed, the virtual inertia control method of variable speed wind turbines is optimized, the power oscillation damping control algorithm of AC excited variable speed wind turbines is improved, and the grid connected frequency control process of variable speed constant frequency wind turbines is simplified. Finally, it is confirmed by experiments, The grid connected frequency control method of AC excited variable speed constant frequency wind turbine generator has high practicability and fully meets the research requirements.

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“…Other equipment used to improve the energy performance of an asynchronous electric drive during start-up includes devices that allow adjusting the voltage at the motor terminals, and, accordingly, controlling the start and stop of the drive, and provide energy savings by reducing the voltage on an underloaded motor [20][21][22].…”

Section: Literature Reviewmentioning

confidence: 99%

Investigation of energy parameters of a compensated asynchronous motor in the mode of repeated short-term starts

Kaplun¹,

Chuenko²,

Makarevych³

2022

Tehnìka ta energetika

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The study is devoted to energy efficiency control of squirrel-cage induction motors of low and medium power and is a continuation of development of the theory of compensated induction motors. The aim of the research is to substantiate the influence of capacitance value on compensation of internal capacitive reactive power of induction motor in starting mode. The mathematical modeling of compensated induction motor allowed us to study quasitransient electromagnetic processes taking into account spatial and temporal directionality of currents of main and additional windings of stator and rotor phases of compensated induction motor. Achievement of the objective is based on the establishment of regularities of influence of compensating capacitance value on energy characteristics of a compensated induction motor during its start-up and achievement of nominal electromagnetic torque on the rotor shaft. Numerical modeling is performed at spatial displacement of phase axes of main and additional phase windings of stator of compensated induction motor by 30°. It provides equality of currents of main and auxiliary stator windings of CAM. As shown by numerical experiment, changing the value of compensation capacitance gives an idea of the conditions for ensuring normal excitation mode of such electrical device. Provision of normal excitation at start-up of a compensated induction motor leads to changes in energy parameters of the machine - minimization of power losses in windings and reactive power consumed by the motor and increase of its power factor. It has been established that the value of compensation capacitance required to ensure normal excitation mode at start-up and steady-state normal mode of a compensated induction motor is different. As a result of simulation, it was found that to ensure energy-efficient starting mode and acceleration to nominal slip, the value of compensating capacity of induction motor should be almost 5 times greater than for the steady-state nominal mode. The results of these studies can be useful for improving the energy efficiency of microgrids with small and medium capacity induction motors.

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Induction motor pre-excitation starting based on vector control with flux linkage deviation decoupling

Cited by 3 publications

References 17 publications

Influence of electromagnetic transient physical models considering characterization characteristics on capacitive voltage transformers

Influence of electromagnetic transient physical models considering characterization characteristics on capacitive voltage transformers

Grid connected frequency control method of AC excitation variable speed constant frequency wind turbine

Investigation of energy parameters of a compensated asynchronous motor in the mode of repeated short-term starts

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