Aug 2026· Gazi Üniversitesi Fen Bilimleri Dergisi Part C: Tasarım ve Teknoloji· 0 citations· 8 references
Abstract
This study proposes a cascaded power conversion structure composed of a three-level DC-DC boost converter and a single-phase five-level T-type inverter to address the high performance and power quality demands of renewable energy systems. The integrated topology is designed to overcome the limitations of conventional two-level architectures by combining high voltage gain with reduced voltage stress on power switches and minimized total harmonic distortion (THD). The paper presents a comprehensive mathematical model and a robust control strategy, utilizing decoupled loops for total DC-link voltage regulation and neutral-point balancing, alongside a synchronous reference frame current controller for the inverter stage. Simulation studies conducted in the MATLAB/Simulink environment validate the operational characteristics of the proposed system. The results demonstrate that the boost stage maintains a stable symmetric DC-link voltage of 350Vdc (∓175Vdc). Furthermore, the T-type inverter generates a five-level output waveform with a THD as low as 1.22% under steady-state conditions and 1.01% under dynamic loading, compliant with IEEE 519 standards. This confirms the system capability to reduce voltage stress on switches by 50% while ensuring high-quality power delivery.
This paper presents a self-balanced five-level active neutral-point-clamped inverter with unity voltage gain. The proposed topology consists of seven active switches, six diodes, a low-voltage switched capacitor, and two dc-link capacitors to generate a five-level output voltage without requiring an additional voltage-...
Rezwan Allabasha, K. Vijayakumar, Meshari S. Alshammari et al.· IEEE Access· 0 citations
Multilevel inverters (MLIs) are widely used in energy-conversion systems because they generate high-quality AC voltages with reduced harmonic distortion. However, existing MLIs often require numerous power devices, multiple DC sources, voltage sensors, or dedicated capacitor-balancing controllers, which increases both...
Taoufiq El Ansari, Ayoub El Gadari, Y. Ounejjar· International Journal of Pow...· 0 citations
This study presents a high-efficiency T-type three-level inverter for interior permanent magnet synchronous motor (IPMSM) drive applications, featuring a comprehensive performance comparison with a conventional two-level inverter. To address the high switching losses and noticeable harmonic distortion typically associa...
The growing penetration of renewable energy sources into modern power networks has intensified the need for compact, efficient, and reliable multi-source power-conversion architectures. This paper presents the design, modeling, and MATLAB/Simulink-based validation of a three-input DC-DC boost converter that simultaneou...
Harshvardhan Mane, D. More, N. Jagtap· International Research Journ...· 0 citations
The topic of this paper is advancing technology to create a new T-type multilevel inverter (TMLI) matrix converter (MC) that can deliver a three-phase output voltage. In this newly developed 3TMLIMC architecture, three unbalanced TMLIs can be connected to a 3x3 MC to enable voltage sharing and to obtain higher output l...
A. Al-Mahrouk, Wasseem Al-Rousan, Emad A. Awada et al.· Jordan journal of electrical...· 0 citations
Conventional switched capacitor boost-multilevel inverters have been widely adopted in solar energy systems and electric vehicles, but their performance is constrained by limited voltage gain, increased switch count, and capacitor voltage imbalance. To mitigate these drawbacks, this paper proposes three phase a single...
Y. V. Sambhavi, K. M. Sanjeeva Kumar, Satyajit Das et al.· IEEE Access· 0 citations
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