Design of Single-Phase Induction Motor Soft Starter with Closed Loop Method Using Arduino Microcontroller

Primatama, Ardhito ORCID: https://orcid.org/0009-0002-8944-7003 (2025) Design of Single-Phase Induction Motor Soft Starter with Closed Loop Method Using Arduino Microcontroller. Design of Single-Phase Induction Motor Soft Starter with Closed Loop Method Using Arduino Microcontroller. ISSN 3110-7079

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Abstract

A closed‑loop soft‑starter for a 220 V/0.5 hp single‑phase induction motor driven by an Arduino micro‑controller and dual feedback (current + speed) is presented. Relative to direct‑on‑line (DOL) starting, the prototype halves the in‑rush current under no‑load conditions (6.62 A versus 3.30 A) and reduces it by 36 % when the
motor drives a synchronous generator (8.28 A versus 5.33 A). Starting torque is maintained at ≥ 90 % of the DOL value in both scenarios, whereas transient time rises modestly from 0.77 s to 2.32 s (no‑load) and to 7.92 s under generator load. These findings demonstrate that the proposed soft‑starter mitigates voltage sag and mechanical stress without compromising torque, making it suitable for small‑enterprise applications where three‑phase supplies are unavailable.

Item Type:	Journal Article
Keywords:	Arduino, Closed-loop Control, Induction Motor, Soft-starter, Starting Current
Subjects:	09 ENGINEERING > 0906 Electrical and Electronic Engineering > 090607 Power and Energy Systems Engineering (excl. Renewable Power) 09 ENGINEERING > 0906 Electrical and Electronic Engineering
Divisions:	Faculty of Technology > Department of Electrical Engineering
Depositing User:	Ardhito Primatama
Date Deposited:	28 Jan 2026 14:31

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