Robles-Campos, Héctor R.

Main Affiliation

Facultad de Ingeniería - CampGDL

Preferred name

Official Name

Robles Campos, Héctor

ORCID

0000-0001-7825-5458

Researcher ID

GPW-8416-2022

Scopus Author ID

57192552877

Now showing 1 - 10 of 22

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A Method for Stabilizing Dual Active Bridge Converters with Constant Power Loads
(Institute of Electrical and Electronics Engineers (IEEE), 2025)
Bhanu Shankar Babaiahgari
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Robles-Campos, Héctor R.
;
Md Habib Ullah
Dual Active Bridge (DAB)-based energy storage systems are the key to integrating renewable energy sources into the power grid. However, DAB converters can become unstable due to the negative impedance characteristic of constant power loads (CPLs), posing a risk to the overall system stability. To address this issue, a stabilization method based on inductor saturation is proposed. This method ensures converter stability by expanding its stability region, mitigating the risk of destabilization from fastacting transients. Based on the mathematical analysis that uses full-order continuous-time average models and the characteristics of a CPL, the proposed method effectively stabilizes the DAB converter by expanding the stability region and achieves a fast dynamic response, even under large signal variations. Unlike other advanced stabilization methods, this approach does not require any modification of the main control objectives, such as bandwidth, voltage regulation, or load performance. The experimental results support the theoretical analysis, demonstrating the effectiveness of the proposed converter and showing an improvement in the overall efficiency of the converter under high load conditions. © 1972-2012 IEEE.
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A Partial Power Processing SEPIC Converter for Photovoltaic Applications
(MDPI AG, 2026-03-16)
Rebullosa-Castillo, Josué Francisco
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García-Vite, Pedro Martín
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Contreras-Alvarez, Carolina
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Chavez-Muro, Jose de Jesus
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Robles-Campos, Héctor R.
This paper presents the analysis, design, and experimental validation of a Partial Power Processing (PPP) Single-Ended Primary Inductor Converter (SEPIC) for photovoltaic (PV) applications. The proposed topology limits the fraction of processed power through the active switching stage, thereby reducing MOSFET RMS current and associated conduction losses and improving overall conversion efficiency. A complete analytical framework is developed, including steady-state modeling, state-space formulation, and small-signal analysis. The theoretical results are validated through MATLAB/Simulink simulations and laboratory-scale experimental tests under multiple loading conditions. Comparative analysis against a conventional Full Power Processing (FPP) SEPIC converter demonstrates that the proposed PPP configuration achieves efficiencies up to 95% in simulation and up to 93% experimentally, compared to 87% for the FPP counterpart under identical nominal conditions (𝑉in =18 V, 𝑓s =70 kHz). Additionally, the PPP approach reduces the MOSFET RMS current by more than 50%, which directly translates into lower conduction losses and reduced device power dissipation. The results confirm that the proposed PPP-SEPIC converter constitutes a technically viable and energy-efficient solution for photovoltaic DC–DC power conversion systems.
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Modeling, Modulation and Control of Hexverter-Based Modular Multilevel Converters
(University of Colorado Denver, 2022)
Robles-Campos, Héctor R.
Electrical power extraction from renewable energy sources such as photovoltaics (PV), wind farms, and some others, have their own technical challenges. It is necessary to perform the power processing tasks according to the nature of the power supply and, at the same time, it is required to be compliant with technical regulations and particular needs of final users. These tasks are achieved with the development of power electronics converters and suitable control systems. Modular multilevel converters (MMCs) have been during the last years, and will continue to be in the near future, a trending research topic. To better process the electrical power, MMCs can be used where two or three level power converters are used today. This is essentially due to multiple advantages, such as, (i) inherent fault tolerance or some times called redundancy, (ii) application in medium and high power levels, (iii) high scalability: in function of the number of power modules, (iv) better quality of output power, and (v) comparatively low switching frequency.
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A comparative evaluation of modulation strategies for Hexverter–based Modular Multilevel Converters
(IEEE, 2019-02)
Robles-Campos, Héctor R.
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Mancilla-David, Fernando
In this work two different modulation strategies termed: i) nearest level control, and ii) phase disposition-sinusoidal pulse width modulation, are described, simulated and compared when applied to a Hexverter-based modular multilevel converter. In addition, two different voltage balancing algorithms are implemented and evaluated. Furthermore, total harmonic distortion regarding three-phase system voltages are assessed. In the end, synthesized branch voltage spectrum for each modulation strategy is analyzed.
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Ripple‐Free Input Current Quadratic Converter Based on Watkin–Johnson Topology
(Institution of Engineering and Technology (IET), 2025-01)
Brenda Lizeth Reyes‐García
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Pedro Martín García‐Vite
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Robles-Campos, Héctor R.
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Marco Antonio Coronel‐García
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Rosas-Caro, Julio
This article proposes a power electronics converter capable of providing high voltage gain while keeping a high‐quality input current ripple operating with low duty cycle. The technique for achieving the zero input current ripple at a selected duty cycle consists of extracting two inductor currents from the source in a counter‐phase manner. The technique is similar to those employed in interleaved converters, maintaining the high voltage gain. The quadratic‐type voltage gain makes the proposed converter suitable for low‐voltage renewable energy sources, such as PV panel generation. Another important topology feature is the common reference to the output voltage; that is, the load and source share the negative terminals. The high voltage gain is achieved by cascading two particular power cells. On the input side, a modified buck‐boost converter is connected, while the second stage consists of an H‐bridge based on the Watkin–Johnson topology. The H‐bridge configuration consists of two capacitors, one inductor, and a pair of transistors and diodes to control the voltage gain, which provides polarity selection flexibility. This paper includes the mathematical development in continuous conduction mode operation, providing design guidelines. Besides, two commutation techniques are proposed to obtain direct or inverse polarity. The modeling is validated via simulation, and an experimental lab‐scale corroborates its performance. The validation includes open‐loop performance, demonstrating low input current ripple, and a closed‐loop configuration that confirms proper output voltage regulation.
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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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Rosas-Caro, Julio
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Elias Valdez-Resendiz, Jesus
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Guillen, Daniel
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Robles-Campos, Héctor R.
This paper presents a study related to a recently proposed quadratic boost converter topology: the so-called Low Energy Storage Quadratic Boost (LES-QB) converter. Unlike traditional quadratic boost converters, the LES-QB converter achieves high voltage gain with reduced energy storage in its passive components, enabling more compact designs. Recently, an improved operation was proposed based on the optimized selection of capacitors. This work focuses on the implementation and validation of the optimized design. The converter was built and tested, and its operation was compared against that of a non-optimized configuration. The results demonstrate that the correct selection of capacitors leads to a reduced switching ripple without increasing the size of the converter. Experimental results are provided.
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Failure mode and effects analysis and sensitivity analysis for a neutral point re-injection multi-pulse voltage source converter
(Elsevier BV, 2025-09)
Valderrabano-Gonzalez, Antonio
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F. Beltran-Carbajal
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Robles-Campos, Héctor R.
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R. Tapia-Olvera
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Rosas-Caro, Julio
Sensitivity Analysis plays a crucial role in the design, control, and optimization of multi-pulse Voltage Source Converters. It helps engineers assess how variations in parameters influence system performance, enabling the development of more efficient and robust converters. This study presents some Failure Modes and Effects Analysis that intends to identify the most affected components when a gate disconnection failure occurs, making them critical points for stress management. Additionally, the most vulnerable components when gates remain connected to high value are distinguished. Verifying the voltage output shape, it can be noticed that RMS voltage measurements are not a reliable indicator for tracking failure, whereas THD offers a more effective solution. Understanding these failure modes is essential for refining the design and control strategies of electronic converters, particularly in applications such as motor control and StatCom. Sensitivity analysis also strengthens control algorithms, ensuring that they can effectively accommodate parameter fluctuations while aiding in fault diagnosis and failure prediction. The early detection of switch malfunctions in power converters is essential for maintaining system reliability, safety, performance, and cost efficiency. Timely identification allows for proactive maintenance, preventing extensive damage and ensuring continuous operation. As the converters become increasingly integral to various applications, implementing reliable fault detection mechanisms is essential for sustaining their optimal performance and long-term functionality.
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A Single-Output-Filter Double Dual Ćuk Converter
(2024)
Robles-Campos, Héctor R.
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Rosas-Caro, Julio
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Mayo Maldonado, Jonathan
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Johnny Posada
This study introduces an innovative version of a recently studied converter. A Double Dual Ćuk Converter was recently studied with advantages like the possibility of designing it for achieving a low-input current ripple. The proposed converter, called the Improved Double Dual Ćuk Converter, maintains the advantages of the former one, and it is characterized by requiring one less capacitor and inductor than its predecessor. This allows addressing the challenge of optimizing the topology to reduce component count without compromising the operation; this work proposes an efficient design methodology based on theoretical analysis and experimental validation. Results demonstrate that the improved topology not only retains the advantages of the previous version, including high efficiency and robustness, but also enhances power density by reducing the number of components. These advancements open new possibilities for applications requiring compact and efficient power converters, such as renewable energy systems, electric vehicles, and portable power supply systems. This work underscores the importance of continuous innovation in power converter design and lays the groundwork for future research aimed at optimizing converter topologies. A detailed discussion of the operating principles and modeling of the converter is provided. Furthermore, simulation outcomes highlighting differences in steady-state duration, output voltage, input current ripple, and operational efficiency are shared. The results from an experimental test bench are also presented to corroborate the efficacy of the improved converter.
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Double Dual High Step-Up Power Converter with Reduced Stored Energy
(2023)
Robles-Campos, Héctor R.
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Valderrabano-Gonzalez, Antonio
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Rosas-caro, Julio
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Hossam A. Gabbar
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Bhanu Babaiahgari
<jats:p>This paper introduces a dual-switchhigh step-up DC-DC power converter. The proposed converter features a high step-up voltage gain, relatively low cumulative stored energy over its inductors, low voltage stress on the active switches, and high efficiency, even at a relatively high duty ratio. An assessment of the proposed converter against conventional boost and a high step-up power converter is presented in terms of steady-state time, voltage gain, stored energy over its inductors, and efficiency. The assessment shows a reduction of 81.25% and 62.5% of stored energy in inductors to comply with the same operational conditions. Simulation and experimental results are provided to validate the benefits of the proposed dual-switch high step-up power converter.</jats:p>
Scopus© Citations 3 15 2
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A Symmetric Sixth-Order Step-Up Converter with Asymmetric PWM Achieved with Small Energy Storage Components
(2024)
Dueñas-García, Iván Emmanuel
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Rosas-Caro, Julio
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Robles-Campos, Héctor R.
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Posada, Johnny
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Valdez-Resendiz, Jesus E.
<jats:p>This research explores an improved operation of a recently studied converter, the so-called two-phase sixth-order boost converter (2P6OBC). The converter consists of a symmetric design of power stations followed by an LC filter; its improved operation incorporates an asymmetric pulse width modulation (PWM) scheme for transistor switching, sometimes known as an interleaved PWM approach. The new operation leads to improved performance for the 2P6OBC. Along with studying the 2P6OBC, one of the contributions of this research is providing design equations for the converter and comparing it versus the interleaved (or multiphase) boost converter, known for its competitiveness and advantages; the single-phase boost topology was also included in the comparison. The comparison consisted of a design scenario where all converters must achieve the same power conversion with an established maximum switching ripple, and then the stored energy in passive components is compared. Although the 2P6OBC requires a greater number of components, the total amount of stored energy is smaller. It is known that the stored energy is related to the size of the passive components. Still, the article includes a discussion of this topic. The new operation of the converter offers more streamlined, cost-effective, and efficient alternatives for a range of applications within power electronics. The final design of the 2P6OBC required only 68% of the stored energy in inductors compared to the multiphase boost converter, and 60% of the stored energy in capacitors. This result is outstanding, considering that the multiphase boost converter is a very competitive topology. Experimental results are provided to validate the proposed concept.</jats:p>
Scopus© Citations 1 13

Robles-Campos, Héctor R.

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