Soft Starting of High Power Three Phase Induction Motor: Theory and Applications

Authors

  • Le Duy Vy Hanoi University of Science and Technology
  • Ho Dinh Hung Hanoi University of Science and Technology
  • Pham Bao Chung Hanoi University of Science and Technology
  • Linh Nguyen Hanoi University of Science and Technology

Keywords:

Soft starter, Variable frequency drive, Cascaded H-bridge inverter, Three-phase asynchronous motor

Abstract

In most heavy-industry, three-phase asynchronous motors have become an inevitable piece of equipment that transforms electrical into mechanical power due to their simple and reliable structure. One major problem with the high-power motor is starting, since direct-on-line starting of high-power motors usually cause voltage sag and over-current which may affect other equipment in the same network. Besides, most heavy machines are sensitive to high acceleration and jerking of mechanical parts. So, having a thorough understanding of soft starting solutions for high-power three-phase asynchronous motors is extremely important to electrical engineers. In this research, the most being-used soft-starting solutions of three-phase induction motors are reviewed with in-depth analysis. Based on numerical simulations carried out with the two most popular loads: pump/fan and dry-friction, the reader can see the effectiveness of each soft-starting method intuitively.

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Published

01-12-2023

How to Cite

Le Duy Vy, Ho Dinh Hung, Pham Bao Chung, & Nguyen, L. (2023). Soft Starting of High Power Three Phase Induction Motor: Theory and Applications. Journal of Measurement, Control, and Automation, 4(3), 54-63. Retrieved from https://mca-journal.org/index.php/mca/article/view/191