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UPS Design for Increased Flexibility of Use and More Economic with PWM Controlled Inverter Based on ATmega 328 Microcontroller

Perancangan Uninterruptible Power Supply (UPS) untuk Peningkatan Fleksibilitas Penggunaan dan Lebih Ekonomis dengan Inverter Kendali Pulse Width Modulation (PWM) Berbasis Mikrokontroler ATmega 328

*Rakhmad Syafutra Lubis orcid scopus  -  Jurusan Teknik Elektro dan Komputer, Universitas Syiah Kuala, Indonesia
Abdul Haris  -  Jurusan Teknik Elektro dan Komputer, Universitas Syiah Kuala, Indonesia
Tarmizi Tarmizi  -  Jurusan Teknik Elektro dan Komputer, Universitas Syiah Kuala, Indonesia
Open Access Copyright (c) 2022 TEKNIK

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Abstract
As the high electrical load increases, power outages can occur suddenly while using electronics and often will cause damage to both software and hardware from the electronic load. To solve this problem, can use an UPS. but UPS also still has weaknesses that become the basis for consideration of its use not yet widespread, such as the price is still expensive and the backup time is short, Therefore, the design of a single-phase ac power supply with a PWM Inverter controller based on the Atmega 328 Microcontroller was carried out to increase the flexibility of the UPS using a current flow pattern according to a bidirectional ac power supply and simplified in this study to make it more economical with fewer diodes and MOSFETs. Total harmonic distortion (THD) voltage is 5.24%, output frequency is 49.56 Hz, output voltage and voltage drop meet the standard with the UPS device consisting of a transformer, adapter and inverter with adjustable switching frequency and filters.
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Keywords: mikrokontroler; uninterruptible power supply; rectifier; inverter; pwm

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