Sensorless current prediction in single phase inverter circuits with machine learning algorithms

Year 2021, Volume: 5 Issue: 3, 221 - 230, 30.09.2021

Hüseyin Türe , Selami Balcı , Kadir Sabancı , Muhammet Fatih Aslan

https://doi.org/10.30521/jes.932581

Abstract

Inverter circuits are widely used in power electronics applications such as electric motor control, induction heating or different Alternating Current (AC) loads. The control signal applied to the switching elements can affect the quality of the sinusoidal signal that occurs at the output of the inverter circuit by the means of voltage and current values. The inverter circuit topologies are generally designed as closed loop. However, these cause complexity of the circuit topology, increase the production costs and give difficulties in designing the control signals. In the present work, simulations of a single-phase inverter circuit with the Sinusoidal Pulse Width Modulation (SPWM) control signal are performed. Thus, the effect of the SPWM signals on the output of the inverter has been observed by changing the Modulation rate (M), the carrier signal frequency (f_c) and the reference signal frequency (f_r). Through the data obtained, the output current of a phase inverter without a sensor is estimated by Machine Learning Algorithms (MLA) such as Multi-Layer Perceptron (MLP), Support Vector Machine (SVM) and K-Nearest Neighbors (KNN).

Keywords

Inverter circuit, Machine learning algorithms, Sensorless control, Parameter estimating

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