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

Li, Donghui; Xiao-bin, Deng

doi:10.1109/iceice.2011.5778000

Cited by 5 publications

(1 citation statement)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In [7], phase control method of DVF optimal switching is studied, which has a favorable effect on solving switch disturbance but don't compare with other methods. In [8][9], one triggering scheme of output equivalent sinusoid voltages based on DVF is proposed, which analyzes the voltage symmetry and acquired available frequency dividing coefficients. It is insufficient that the control method can't consider the flux of IM when two-phase thyristor circuits are triggered.…”

Section: Introductionmentioning

confidence: 99%

One Novel Soft-Starting Control Strategy for Induction Motor Based on Space Voltage Vectors

Xie

Liang

et al. 2022

International Journal of Advanced Network, Monitoring and Controls

View full text Add to dashboard Cite

This study presents a novel control strategy of discrete variable frequency (DVF) based on space voltage vectors for a three-phase induction motor (IM) soft-starting. The proposed strategy is developed in four steps. First, conducting states of the three-phase thyristor circuits are analysed, and the formation mechanism of space voltage vectors is also demonstrated. Then, DVF control strategy of IM based on hexagon flux linkage loci is expounded categorically, which contains frequency f/7 control, frequency f/4 control, frequency f/3 control and ramp voltage control. Next, under two-phase stationary coordinate system, stator flux equation of IM is derived, and the decrease in stator flux when zero-vector voltage working is calculated accurately. In the end, an experimental system of IM based on three-phase thyristor circuits is constructed, and the experimental results are dealt with and compared with the usual ramp voltage technique. The study results show that IM driven by the proposed strategy can steadily operate at the preset discrete frequency, and the effective value of starting current of IM can be decreased by nineteen percent. The experimental results verify the conclusions.

show abstract

Section: Introductionmentioning

confidence: 99%