The paper presents a computer-based measurement system for recording and visualizing selected electromechanical quantities of an AC drive. The basic parameters of the three-phase controller and the principles of their configuration are characterized. Measurement tests of the drive system during start-up were conducted. The results of the tests are presented in the form of time waveforms of rotational speed, interphase voltage, and phase current.A three-phase AC voltage controller, also known as a soft-start system, due to the fact that it is most often used for the soft start of squirrel-cage induction motors, is currently finding wider and wider application in industry.
Especially in relation to those technological processes where a soft start and braking of one motor or a group of induction motors is required without the need for continuous angular velocity regulation [1]. (…)
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Source: Logistyka Magazine