Design of Unipolar Pure Sine Wave Inverter with Spwm Method Based On Esp32 Microcontroller As a Support of The Ebt System On ShipZindhu Maulana Ahmad Putra, Anggara Trisna Nugraha, Yuning Widiarti, Wafiq Safaroz and Rama Arya SobhitaE3S Web Conf., 473 (2024) 01008DOI: https://doi.org/10.1051/e3sconf/202447301008