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Practical Evaluation of an Optimized LES-QB Converter: Implementation and Experimentation
(IEEE, 2025-11-12)
Solís-Rodriguez, Jose
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Elias Valdez-Resendiz, Jesus
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Guillen, Daniel
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A Rapid Single-Phase Blackout Detection Algorithm Based on Clarke–Park Transformations
(MDPI AG, 2026-01-19)
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Valdez-Resendiz, Jesus E.
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Posada, Johnny
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Quadratic Boost Converter with Reduced Input Current Ripple
(MDPI AG, 2025-10-08)
Babaiahgari, Bhanu
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Valdez-Resendiz, Jesus E.
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Silva-Vera, Edgar D.
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Ripple Minimization Method for a Modified Non-Inverting Buck–Boost DC–DC Converter
(MDPI AG, 2026-02-16)
Villanueva-Loredo, Juan Antonio
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Martinez-Rodriguez, Panfilo R.
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Rodriguez-Cortes, Christopher J.
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Langarica-Cordoba, Diego
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Nonlinear Control Design for a PVTOL UAV Carrying a Liquid Payload with Active Sloshing Suppression
(MDPI AG, 2026-01-03)
Zurita-Gil, Manuel A.
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Ortiz-Torres, Gerardo
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Sorcia-Vázquez, Felipe D. J.
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Rumbo-Morales, Jesse Y.
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Gascon Avalos, José J.
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Inertia in Converter-Dominated Microgrids: Control Strategies and Estimation Techniques
(MDPI AG, 2025-10-14)
Fabio A. González
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Johnny Posada
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Bruno W. França
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<jats:p>This scoping review analyzes the role of inertia in converter-dominated microgrids, with an emphasis on hybrid AC/DC architectures. Following the PRISMA-ScR methodology, 54 studies published between 2015 and 2025 were identified, screened, and synthesized. The review addresses two key aspects, inertia estimation methods and control strategies for emulating inertia via power converters, emphasizing the role of the interlinking converter (ILC) as a bidirectional interface for inertia support between the AC and DC subsystems. This work addresses several limitations of prior reviews: their narrow scope, often overlooking advanced data-driven approaches such as machine learning; the lack of systematic classifications, hindering a comprehensive overview of existing methods; and the absence of practical guidance on selecting appropriate techniques for specific conditions. The findings show that conventional estimation methods are insufficient for low-inertia grids, necessitating adaptive and data-driven approaches. Virtual inertia emulation strategies—such as Virtual Synchronous Machines, Virtual Synchronous Generators, Synchronverters, and ILC-based controls—offer strong potential to enhance frequency stability but remain challenged by scalability, adaptability, and robustness. The review highlights critical research gaps and future directions to guide the development of resilient hybrid microgrid control strategies.</jats:p>
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Comparative Analysis of Efficiency and Harmonic Generation in Multiport Converters: Study of Two Operating Conditions
(MDPI AG, 2025-10-02)
Francisco J. Arizaga
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Juan M. Ramírez
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Janeth A. Alcalá
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Armando G. Rojas-Hernández
This study presents a comparative analysis of efficiency and harmonic generation in Triple Active Bridge (TAB) converters under two operating configurations: Case I, with one input source and two loads, and Case II, with two input sources and one load. Two modulation strategies, Single-Phase Shift (SPS) and Dual-Phase Shift (DPS), are evaluated through frequency-domain modeling and simulations performed in MATLAB/Simulink. The analysis is complemented by experimental validation on a laboratory prototype. The results show that DPS reduces harmonic amplitudes, decreases conduction losses, and improves output waveform quality, leading to higher efficiency compared to SPS. Harmonic current spectra and total harmonic distortion (THD) are analyzed to quantify the impact of each modulation method. The findings highlight that DPS is more suitable for applications requiring stable power transfer and improved efficiency, such as renewable energy systems, electric vehicles, and multi-source DC microgrids.
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Three-Phase Space Vector PWM Inverter for Induction Motor Drive with Leakage Current Reduction
(MDPI AG, 2025-10-20)
Gerardo Vazquez-Guzman
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Panfilo R. Martinez-Rodriguez
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Emmanuel Rivera-Perez
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Juan A. Verdin-Cruz
Several industrial applications rely on induction motors to carry out processes essential for product manufacturing. Speed control of an induction motor commonly requires a pulse width modulated inverter capable of driving a system with long cables, suppression of common mode voltage, reduction in common mode current, and suppression of electromagnetic interference. This paper proposes a three-phase motor drive aimed at maintaining a constant common-mode voltage. The proposed system consists of two three-phase conventional full bridge inverters connected in parallel and having as an input two separate direct current sources. The proposed system is controlled by using the space vector pulse width modulation technique. By properly designing the switching signal sequences for both converters, the common-mode voltage can be maintained constant, thereby reducing the associated common-mode current to an RMS value of 92.3 mA and enhancing the overall reliability of the system. The proposed system is validated through numerical simulations and by the implementation of an experimental prototype.
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Control Algorithm for an Inverter-Based Virtual Synchronous Generator with Adjustable Inertia
(MDPI AG, 2025-09-05)
Christian A. Villada-Leon
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Johnny Posada Contreras
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Rafael A. Núñez-Rodríguez
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Juan C. Valencia
<jats:p>This paper presents the design and implementation of a control algorithm for power converters in a microgrid, with the main objective of providing the flexibility to adjust the system inertia. The increasing integration of renewable energy sources in microgrids has driven the development of advanced control techniques to ensure stability and power quality. The proposed algorithm combines droop control, synchronverter dynamics, and virtual impedance to achieve a robust and efficient control strategy. Simulations were conducted to validate the algorithm’s performance, demonstrating its capability to maintain voltage within acceptable limits and improve the inertial response of the microgrid. The results contribute to the advancement of intelligent and resilient microgrid development, which is essential for the transition towards a more sustainable energy system.</jats:p>
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Improved Operation of the Modified Non-Inverting Step-Down/Up (MNI-SDU) DC-DC Converter
(MDPI AG, 2025-09-20)
Juan A. Villanueva-Loredo
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Panfilo R. Martinez-Rodriguez
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Christopher J. Rodriguez-Cortes
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Diego Langarica-Cordoba
<jats:p>This paper presents an enhanced operation strategy for a recently proposed converter called Modified Non-Inverting Step-Down/Up (MNI-SDU) DC-DC converter intended for battery voltage regulation. Unlike the conventional approach, where both switching stages share a single duty cycle, the proposed method controls asynchronously the two duty cycles through a fixed time offset to optimize performance. A methodology is developed to define suitable duty cycle ranges that ensure proper converter operation according to input/output voltage specifications, while simultaneously reducing the current and voltage ripples and electrical stress in the capacitor and semiconductors. Furthermore, a model-based control strategy is proposed, taking into account the enhanced operational characteristics. Consequently, a PI-PI current-mode controller is designed using loop shaping techniques to maintain the output voltage regulated at the desired level. The proposed approach is analyzed mathematically and validated through experimental results. The findings demonstrate that optimizing through asynchronous duty-cycle control with a fixed time offset improves ripple, stress values, and overall efficiency, while maintaining robust output voltage regulation, making this method well-suited for applications requiring compact and reliable power conversion.</jats:p>

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