This work presents the design, implementation, and experimental validation of an open-loop three-phase inverter prototype. The experimental campaign was carried out with a regulated 48 V DC bus, while the bus-monitoring circuit was dimensioned for a wider voltage range. Control was implemented on an STM32 using digital SPWM, with a 120° phase shift and an adjustable output frequency between 60 and 80 Hz. To reduce the risk of cross-conduction in the MOSFETs, dead-time insertion was configured in both hardware and firmware. Tests with resistive loads verified three-phase operation in star and delta configurations, with balanced line voltages under laboratory conditions. The efficiency close to 92% corresponds to the tested low-load condition. Characterization at higher power levels and harmonic-distortion measurements are proposed as the next validation stage.
This paper proposes a high-frequency DC/AC inverter design using full-SiC MOSFETs and a T-type three-level topology to address the large volume and low power density of traditional subway auxiliary inverters. To further reduce the passive filter volume in two-stage isolation architectures, the switching frequency is el...
Zhi-Qiang Wen, Shi-Gan Tan, Jian-Ming Tang et al.· Journal of Physics, Conferen...· 0 citations
The proliferation of non-linear loads in modern electrical systems has intensified the degradation of Power Quality (PQ), leading to technical and economic impacts ranging from equipment overheating to significant financial losses. Given the need for continuous monitoring in compliance with current regulations, such as...
Antônio Lima, T. Weber· 2026 10th International Symp...· 0 citations
The growing penetration of distributed generation (DG) in low-voltage (LV) networks has increased the need for effective voltage regulation, particularly for prosumers who act as both consumers and generators. To mitigate long-term voltage variations, this study further develops a recently proposed single-phase LV volt...
A. Danzo, S. Perna, G. Casolino et al.· 2026 International Conferenc...· 0 citations
In this paper, a design of symmetric and asymmetric multilevel inverter (MLI) with few quantities of switch is presented. The structure can be able to operate with both symmetric and asymmetric sources. The presented model is capable of producing output levels of 15 with symmetric structure and 33 with asymmetric struc...
Vijayaraja Loganathan, Dhanasekar Ravikumar, G. Srinivasan et al.· International Journal of App...· 0 citations
Islanded AC microgrids with parallel inverters require coordinated voltage formation and load sharing. This study presents a Van der Pol-based virtual oscillator controller for two parallel single-phase voltage-source inverters. The voltage reference of each inverter is generated from its local output-current measureme...
Duy Thai Ha, Thanh Trung Lai, Trọng Minh Trần et al.· International Journal of Ele...· 0 citations
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