Single-Phase SPWM Inverter Ordered With Microcontroller

Albu, Razvan Daniel; Gordan, Cornelia-Emilia

doi:10.1109/emes58375.2023.10171665

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2024

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Cited by 2 publications

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PIC Based Bipolar and Unipolar SPWM for Pure Sine Wave Single-Phase Inverter

Chaaira,

Kraiem,

Gamoudi

et al. 2024

Green Energy and Technology

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PIC Based Bipolar and Unipolar SPWM for Pure Sine Wave Single-Phase Inverter

Chaaira,

Kraiem,

Gamoudi

et al. 2024

Green Energy and Technology

View full text Add to dashboard Cite

Comparative Analysis of Bipolar and Unipolar SPWM Techniques in PIC-Based Pure Sine Wave Single-Phase Inverters

Chaaira,

Kraiem,

Gamoudi

et al. 2024

Eng. Technol. Appl. Sci. Res.

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This paper provides a comparative analysis of bipolar versus unipolar Sinusoidal Pulse Width Modulation (SPWM) in DC-AC inverters, focusing on Total Harmonic Distortion (THD) across modulation indices and the latter’s effects on the R-L loads. Using the PIC18F2431 microcontroller for its efficiency, a single-phase inverter accomplished to deliver a high-fidelity sine wave. This study discovered that while both SPWM methods reduce harmonics, the unipolar approach yields more uniform THD reduction and superior performance, particularly noticeable in RL load conditions, where minimal harmonic distortion is crucial. The bipolar inverter, despite a higher initial THD, shows a considerable improvement at higher indices, significantly enhanced by an LC low-pass filter. This filter is a key component in achieving sub-1% THD levels at full modulation, ensuring optimal sine wave quality. The findings highlight the operational differences between the SPWM techniques and the importance of the LC filters in ameliorating the inverter output for various power applications.

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Single-Phase SPWM Inverter Ordered With Microcontroller

Cited by 2 publications

References 2 publications

PIC Based Bipolar and Unipolar SPWM for Pure Sine Wave Single-Phase Inverter

PIC Based Bipolar and Unipolar SPWM for Pure Sine Wave Single-Phase Inverter

Comparative Analysis of Bipolar and Unipolar SPWM Techniques in PIC-Based Pure Sine Wave Single-Phase Inverters

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