Balkan Journal of Electrical and Computer Engineering 2147-284X 2147-284X MUSA YILMAZ 10.17694/bajece.1475619 Electrical Engineering (Other) Elektrik Mühendisliği (Diğer) Identification of the Operating Modes in Single-Phase DC Drives https://orcid.org/0000-0003-2262-1599 Kaymaz Ahmet Karabük Üniversitesi https://orcid.org/0000-0001-5013-091X Akbaba Mehmet KARABÜK ÜNİVERSİTESİ https://orcid.org/0000-0001-7243-9395 Akay Ali KARABÜK ÜNİVERSİTESİ 01 07 2025 12 4 309 319 04 30 2024 10 07 2024 Copyright © 2013, Balkan Journal of Electrical and Computer Engineering 2013 Balkan Journal of Electrical and Computer Engineering

In this study, operating modes of controlled single-phase rectifier-driven direct current (DC) drives were investigated. It was observed that the motor performance exhibited different behaviour depending on the combined interaction of the rectifier firing angle, motor parameters, motor load (or speed), supply voltage and frequency. It can be said that the voltage across the motor and the current through the motor take different waveforms in each of these different states, which are named drive operating modes in this study. Furthermore, analysis and simulations were conducted for two different types of drives: a) Single-phase fully controlled bridge rectifier drive (FCBRD) and b) Single-phase half-controlled bridge rectifier drive (HCBRD), including a freewheeling diode. As a result, the motor current waveform exhibits seven distinct operating modes, each performing different characteristics when driven by two types of rectifier circuits. On the other hand, the mathematical models of these seven modes were also presented in this study. The actual time variations of voltage across and current through the motor armature and the total harmonic distortion (THD) were presented through simulations for each mode using the obtained mathematical models in MATLAB.

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