Research Article
Design and Implementation of a High-Performance SPWM-Based Three-Phase Inverter for Induction Motor Drives
@INPROCEEDINGS{10.4108/eai.16-9-2025.2361035, author={Wanapri Pangaribuan and Bakti Dwi Waluyo and Selly Annisa Binti Zulkarnain and Muhammad Aulia Rahman Sembiring}, title={Design and Implementation of a High-Performance SPWM-Based Three-Phase Inverter for Induction Motor Drives}, proceedings={Proceedings of the 7th International Conference on Innovation in Education, Science, and Culture, ICIESC 2025, 16 September 2025, Medan, Indonesia}, publisher={EAI}, proceedings_a={ICIESC}, year={2026}, month={3}, keywords={three-phase inverter spwm induction motor variable speed drive dsp control inverter efficiency thd}, doi={10.4108/eai.16-9-2025.2361035} }- Wanapri Pangaribuan
Bakti Dwi Waluyo
Selly Annisa Binti Zulkarnain
Muhammad Aulia Rahman Sembiring
Year: 2026
Design and Implementation of a High-Performance SPWM-Based Three-Phase Inverter for Induction Motor Drives
ICIESC
EAI
DOI: 10.4108/eai.16-9-2025.2361035
Abstract
The rapid expansion of variable speed drive systems in industrial automation has spurred a growing demand for compact, high-efficiency three-phase inverters capable of facilitating precise control over induction motors. This research presents the design, implementation, and experimental validation of a 2 kVA three-phase voltage source inverter employing sinusoidal pulse-width modulation (SPWM) for induction motor applications. The hardware architecture integrates a high-frequency gate-drive circuit, discrete IGBT power modules, and a Digital Signal Processor (DSP)-based control platform executing real-time PWM generation at a 10 kHz frequency. A closed-loop speed control algorithm, activated by feedback from an incremental encoder, is implemented to enhance dynamic response to load variations. Prototype evaluation was conducted on a 1.5 kW squirrel-cage induction motor over a speed range of 0–1500 rpm. Measurement results indicate that the total harmonic distortion (THD) in the phase-to-phase output voltage is below 4.7% without an output LC filter, inverter efficiency peaks at 95.2%, and the settling time is less than 80 ms for a sudden 50% load change. The thermal profile confirms that the junction temperature remains within safe limits (< 85 °C) after one hour of continuous full-load operation, validating the inverter's thermal reliability.
