Power Converter Research Papers - Academia.edu (original) (raw)

2025

This study presents a comparative analysis of the one, two and threediode mathematical models of photovoltaic (PV) cells. It is shown that for an n-diode (n > 1) PV cell model, the open circuit voltage and maximum power decreases by n % when compared with a one diode model. The non-linear equations that governs the currentvoltage and power-voltage characteristics are presented and simulated using an iterative looping method in Matlab. All the mathematical model simulations were performed at manufacturers standard test conditions (25 • C, 1000W/m 2) and compared with the manufacturer parameter values from the KC200GT datasheet. Results obtained are presented for two cases: models without shunt resistance and models with shunt resistance. For models without shunt resistance, the one diode has the highest values of the open circuit voltage and maximum power. The two diode model values of maximum power and open circuit voltage differed from values of the single diode model with a 2 % decrease. The three diode model values were reduced by 3 %. Similarly, for models with shunt resistance, the one diode has the highest values of the open circuit voltage and maximum power. The two diode model values of maximum power and open circuit voltage differed from values of the single diode model by 2 % decrease. The three diode model values were decreased by 3 %. The findings indicate that the one-diode model offers the best trade-off between simplicity and accuracy, making it suitable for simulation tasks where computational efficiency is critical. This comparative framework provides valuable insights for selecting appropriate PV models based on application-specific requirements.

2025, HAL (Le Centre pour la Communication Scientifique Directe)

Energy management for systems presenting at least two energy sources is still a challenge. Moreover in Hybrid Electrical Vehicle the power must be managed in real time within system constraints. The proposed approach based on a fuzzy controller, uses different set of rules depending on different phases present in a mission profile. From the proposed segmentation of the requested power profile to follow, derives a switch between three different rules in order to decrease the fuel consumption instead of applying a unique rule computed globally on a given profile.

2025, IEMDC 2001. IEEE International Electric Machines and Drives Conference (Cat. No.01EX485)

This paper deals with literature survey of various existing converter topologies, which have been proposed for adjustable speed single phase induction motor drives (SPIMD). Included in the paper are several newly proposed converter topologies. A study of the merit and demerit of different converter topologies have been carried out. Various converter topologies have been compared in this paper. Among these converter topologies, the adjustable frequency PWM inverter is the best choice for single-phase induction motor drives. However, adjustable-frequency drives have not been widely used with single-phase induction motors. The open-loop constant V/f control law cannot be used with the single-phase induction motor drives as it is used with three phase motors. The variation of the operating frequency at lower speed range with constant load torque causes variation in the motor's slip. A constant V/f control is suitable only over the upper speed range. However, improvements in the low frequency performance require the use of constant power dissipation in the motor. Simulation studies for some of the existing topologies as well as for the proposed ones have been carried out.

2025, International Journal of Power Electronics and Drive System (IJPEDS)

This paper presents an investigation into the energy potential of the Albian aquifer in the Algerian Sahara at the El Oued water demineralization plant, focusing on its capacity to generate electrical power due to its high-pressure and high-temperature water reserves. We designed and implemented a turbine-generator system to convert hydraulic energy into electricity, achieving an average annual energy output of 1,804,560 kWh, which translates to a financial gain of approximately 345,888,600 DZD per year from energy savings. The selection of a Francis turbine was justified based on its efficiency, which ranges from 90% to 95%, and the system design was simulated using MATLAB-Simulink, demonstrating its robustness and effectiveness in managing the electrical network parameters. Our economic analysis indicates a high return on investment, confirming the feasibility of utilizing the Albian aquifer as a strategic asset for clean and reliable energy production in the region.

2025, Solar Compass

2025, IEEE Transactions on Power Electronics

This paper presents a simplified sinusoidal uninterruptible power supply (UPS) system. The proposed scheme includes features such as high power factor, low total harmonic distortion and good dynamic response at the ac output voltage. In addition, the scheme has the desirable characteristics of high efficiency, simple circuit and low cost compared with a traditional standalone multiple stages UPS with power factor correction. The paper also presents the circuit operation, the analysis and, experimental results of the proposed UPS scheme. The proposed UPS approach is a good solution in low power applications ( 500 W).

2025, International Journal of Applied Power Engineering (IJAPE)

Choosing the right controller with the right approach is one of any power converter's biggest concerns. In order to optimise induction heating, a hybrid Cuk converter with a fractional-order proportional integral derivative (FOPID) controller is built. The findings show an improved time domain responsiveness in the FOPID controlled closed-loop hybrid DC-DC converter (CDHC) system. In order to improve the interface between the resonant inverter and DC source and to step up voltage with less output ripple, Cuk converters are used. The research project is concerned with modelling and simulating a hybrid closed-loop DC converter system. The findings show an improved time domain responsiveness in the FOPID controlled CDHC system. The suggested approach offers advantages such as high-power density and buck boost capability. After being inverted, the Cuk converter's output is applied to a DC load. The time responses of the closed loop proportional integral (PI) and FOPID controlled homogeneous charge compression ignition (HCCI) systems are compared. The hardware is implemented and tested for the CDHC system for electric vehicles. The results indicate that the FOPID controlled CDHC system has enhanced time response and benefits such as high-power density buck boost ability.

2025, … , 2009. EPE'09. 13th …

This paper presents a novel modulation for a two-stage dc-ac power converter with high-frequency isolation installed in a photovoltaic stand-alone system. The presented modulation, which is designed for the converter discontinuous... more

2025, International Journal of Applied Power Engineering (IJAPE)

A non-isolated DC-DC converter topology is proposed in this paper, which is distinguished by its superior performance and reduced component count in comparison to conventional converter designs. The suggested architecture is especially appropriate for applications demanding a large voltage step-up since it achieves an improved voltage conversion ratio and excellent efficiency. The addition of a voltage-boosting element, which is an inductor combined in series with a switching device, to the source side of a conventional boost converter is a unique feature of the suggested converter. To confirm the converter's operating features, a thorough theoretical analysis has been carried out, including stability and steady-state evaluations. In addition, a hardware prototype with a 200 V output and 100 W power rating was created in order to test the converter's functionality. With a peak efficiency of 94.3%, the prototype showed good agreement with analytical forecasts. The suggested converter is a viable option for renewable energy applications because of its high voltage gain, small size, and efficiency. This is especially true for solar systems and other distributed energy sources, where low component counts and high step-up ratios are preferred.

2025, 2010 IEEE Vehicle Power and Propulsion Conference

This paper deals with the validation of an EMI model to predict electromagnetic interferences (EMI) produced by power converters. A direct AC to AC matrix converter (MC) has been selected as experimental setup for the paper, but the modeling method can be applied to other converter topologies. The method is based on obtaining a high frequency equivalent circuit, using a combined time and frequency domain approach based on: "EMI source identification→ propagation path impedance→ derived disturbance". The advantages of the proposed procedure are the computational time reduction and the lack of convergence problems, which may arise when using pure time domain procedures. The paper is focused on the prediction of common mode (CM) EMI of a matrix converter. The simulation results of this case will permit the calculation of currents which leak through the ground connections. Two different EMI sources are compared: one based on PWM waveforms obtained from MATLAB ® model and a second one where these data are obtained experimentally from a MC prototype. This procedure allows the comparison of EMI spectra when using simulated waveforms or real source waveforms. I.

2025, IEICE Electronics Express

This paper presents a new model for simulation of Electromagnetic Interference (EMI) in power converters. Despite the fact that a Matrix Converter (MC) has been selected, such methodology can be applied to other converter topologies. The EMI model relies on a combination of time and frequency domain techniques in order to not only reduce the computational complexity but also to avoid convergence problems. Common Mode (CM) leakage current, which lays basically in A band (10 kHz to 150 kHz), is simulated and such results are compared with those obtained from the MC prototype showing a good concordance in terms of peak value.

2025, 2012 15th International Power Electronics and Motion Control Conference (EPE/PEMC)

This paper presents a new mixed modulator that combines interleaving and spread-spectrum techniques in order to achieve the lowest level of conducted EMI generation. This modulator is addressed to power converters in parallel arrangement. The practical details of the hybrid modulator and controller implementation on a FPGA are explained. The characteristics of such modulator in terms of EMI reduction and converter performance are theoretically explored and experimentally validated in a four channel parallel buck converter operating in closed loop.

2025, 2010 IEEE Vehicle Power and Propulsion Conference

2025, IEICE Electronics Express

2025, Journal of Advanced Engineering Trends (Print)

The smart grid (SG) is a new scientific progress concept. Residential and commercial colonies and smart homes have many sensitive electrical devices and renewable energy systems (solar and wind). SG is greatly affected by Power Quality (PQ) disturbances. PQ has significant impacts on the low voltage smart grid, such as flicker, voltage sag/swell, and harmonics, causing substantial losses and disrupting the SG system. The smart home resident needs a clean and reliable electric power energy source without any PQ troubles. Dynamic Voltage Restorer (DVR) is a costefficient and promising static var device installed in series with transmission and distribution lines to protect PQ disturbances in electrical power systems. This research introduces an idea to improve PQ disturbances in the smart distribution grid (smart home) at the low voltage side using a Low-Cost Two-level inverter DVR. This study will use a two-level inverter topology to integrate with the DVR System to obtain a simple and straightforward Low-Cost Two-level Inverter DVR approach that is easy to use, flexible, and practical. In this research, the proposed DVR was designed and simulated in MATLAB/Simulink, where it shows excellent performance to overcome PQ-related disturbances such as voltage sag/swell, flicker, and harmonics with percentages close to 99%.

2025, arXiv (Cornell University)

Electric drive using dc shunt motor or permanent magnet dc (PMDC) motor as prime mover exhibits bifurcation and chaos. The characteristics of dc shunt and PMDC motors are linear in nature. These motors are controlled by pulse width modulation (PWM) technique with the help of semiconductor switches. These switches are nonlinear element that introduces nonlinear characteristics in the drive. Any nonlinear system can exhibit bifurcation and chaos. dc shunt or PMDC drives show normal behavior with certain range of parameter values. It is also observed that these drive show chaos for significantly large ranges of parameter values. In this paper we present a method for controlling chaos applicable to dc shunt and PMDC drives. The results of numerical investigation are presented.

2025, Electric Power Systems Research

The paper presents a selection criterion and approach for sizing neutral-point inductors and detuning capacitor banks in electrical distribution and plant utilization systems. The paper also develops a model relating the influence of... more

2025

In this paper are analyzed the operating characteristics at the rotorical parameters variation in comparison with the charge and in that conditions when rotorical parameters ' 2 ' 2 , X R are constant.

2025, Proceedings of the IEEE International Symposium on Industrial Electronics ISIE-02

Commonly, the magnetic component designer focuses the design on the performance of the magnetic component without a detailed analysis of the whole circuit. However, a complete design process should cover different stages, from the analytical design to the circuit simulation using accurate models. This paper presents a design example where it is highlighted the importance of designing inductors not just from the point of view of the device itself but from the point of view of the circuit where the component is working. It is shown that the optimum design depends on the working mode of the converter and therefore, the design should be analyzed applying circuit simulations in order to verify the selected configuration.

2025, Journal of Applied Physics

For decades, the technology and engineering domains have been constantly demanding high-performance magnetic materials. Recently, polymer bonded NiZn ferrite magnetic materials mixed with titanium (IV) isopropoxide (C12H28O4Ti) for power converter applications have been found to be very promising in reducing the loss, cost, and material weight when compared to their conventional counterparts using air-core technology, conventional soft ferrites, and powder iron. The proposed magnetic core is flexible in both size and shape and is not brittle. The design of a high-frequency transformer for a 100 W two-transistor forward converter-based electric vehicle battery charger operating at a switching frequency of 360 kHz is reported in this paper. Printed circuit board prototyping and experimental results as well as comparisons with conventional converters are provided to validate the application feasibility of the proposed materials.

2025

This paper introduces a closed-loop control system for klystron modulators. The system is based on the discharge of a capacitor into a step-up voltage transformer and an active bouncer implemented with a multiphase buck converter. In order to obtain a constant Klystron voltage at the at-top, the active bouncer must compensate both the capacitor discharge and the pulse transformer characteristic. The proposed control includes an inner voltage regulation loop that controls the active bouncer output voltage and an outer one that controls the klystron voltage. The primary side current and main capacitor voltage are included in the regulation loops to simplify the controllers. Simulations demonstrate that the strategy adopted allows to obtain a precision better than 0:1% on a 110 kV klystron. Experimental tests have shown that the multiphase converter is able to track a high dynamics reference even under variable output voltage conditions.

2025, Procedia Chemistry

A circuit architecture is proposed, which enables an improved system startup for vibration based piezoelectric microgenerators. The innovative approach is based on an optimized synchronous rectifier design and a new trigger circuit. The new architecture is realized as an ASIC in 3.3 V, 0.35 μm CMOS technology. Simulations and experimental measurements show significant performance improvement in comparison to a single diode-connected transistor. For a load of 1 MΩ, the measured value of the circuit output voltage is 1.15 V, where the input voltage amplitude, serial capacitance and frequency are 1.3 V, 44 nF and 500 Hz, respectively.

2025, 2006 37th IEEE Power Electronics Specialists Conference

A growing demand for deployment of autonomous sensors and sensor networks is leading to a subsequent increase in the demand for localized, independent energy harvesting capabilities for each node. In this paper, a method of remote area wind energy harvesting is presented, with a focus on an anemometer-based solution. By utilizing the motion of the anemometer shaft to turn a compact alternator, small amounts of power can be harvested from otherwise unavailable sources. Energy harvested is converted to battery potential via a pulsed buck-boost converter operating in discontinuous conduction mode (DCM). It is found that maintaining a constant input resistance at the input port of the converter biases the alternator to operate at its peak power point over a wide range of wind speeds. Results show that power harvesting capability using the discussed alternator and power converter solution are in the range of tens to hundreds of microwatts up to approximately one milliwatt. This power is passed to the central system batteries, providing a trickle-charge. As a result, sensor nodes incorporating this harvesting solution have an increased field lifetime. High overall efficiency is maintained over a wide range of potential wind speeds, with little impact on anemometer measurement accuracy.

2025, Sustainable Energy, Grids and Networks

One of the fundamental concerns in the operation of modern power systems is the assessment of their frequency stability in case of inertia-reduction induced by the large share of power electronic interfaced resources. Within this context, the paper proposes a framework that, by making use of linear models of the frequency response of different types of power plants, including also gridforming and grid-following converters, is capable to infer a numerically tractable dynamical model to be used in frequency stability assessment. Furthermore, the proposed framework makes use of models defined in a way such that their parameters can be inferred from real-time measurements feeding a classical least squares estimator. The paper validates the proposed framework using a full-replica of the dynamical model of the IEEE 39 bus system simulated in a real-time platform.

2025, Tanzania Journal of Engineering and Technology

With the increased demand for high-reliability power converters in the
electric drive-train and propulsion systems, the efforts to design and
analyze converters with high fault tolerance have become apparent.
Among the emerging trends to improve the reliability of power
converters is the incorporation of dual-buck (DB) structures in
traditional converter topologies. Thus, this paper studies a singlephase dual-buck structured three-level flying capacitor (FC) inverter.
The dual-buck flying capacitor (DBFC) inverter was constructed in
such a way as to suppress the shoot-through problems that may occur
because of the switching mismatch and gate driver delay, as exhibited
in the traditional FC inverter. The detailed operation of the DBFC
inverter was performed using a comparative analysis of the traditional
FC inverter as a benchmark. It was noted that the DBFC inverter
considerably reduces the current stress on some switches and mitigates
the shoot-through problem. Moreover, it was inferred that apart from
improving the reliability of the inverter, the DBFC inverter reduces the
total harmonic distortion (THD) of the output current. The 98.8%
maximum efficiency and 4.03% THD were depicted in the DBFC at a
switching frequency of 40 kHz. The results of the study were validated
using detailed simulations and preliminary experiments.

2025

energize July 2006 Page 56 Electrostatic precipitators (ESPs) have been in commercial operation since the early part of the 20th century. Major applications are in the prevention of particulate pollution arising from electricity generating plant and industry. The principle of operation is that gas borne particles are passed into an electric field comprising of an arrangement of discharge electrodes and collectors, where they are first charged and then, as charged particles, migrate through the field and are deposited on the collectors. To ensure the process is continuous the collectors are either mechanically rapped in a dry application or liquid washed in a wet application, to remove the deposited materials.

2025, Indonesian Journal of Electrical Engineering and Informatics (IJEEI)

Electrical power quality (EPQ) in distribution systems is a critical issue for commercial, industrial and residential applications. The new concept of advanced power electronic based Custom Power Devices (CPDs) mainly distributed static synchronous compensator (D-STATCOM), dynamic voltage restorer (DVR) and unified power quality conditioner (UPQC) have been developed due to lacking the performance of traditional compensating devices to minimize power quality disturbances. This paper presents a comprehensive review on D-STATCOM, DVR and UPQC to solve the electrical power quality problems of the distribution networks. This is intended to present a broad overview of the various possible DSTATCOM, DVR and UPQC configurations for single-phase (two wire) and three-phase (three-wire and four-wire) networks and control strategies for the compensation of various power quality disturbances. Apart from this, comprehensive explanation, comparison, and discussion on D-STATCOM, DVR, and UPQC are presented. This paper is aimed to explore a broad prospective on the status of D-STATCOMs, DVRs, and UPQCs to researchers, engineers and the community dealing with the power quality enhancement. A classified list of some latest research publications on the topic is also appended for a quick reference.

2025, Indonesian Journal of Electrical Engineering and Informatics (IJEEI)

The voltage events namely voltage sags and voltage swells represent the most common, frequent and important power quality events in today's power system. Dynamic voltage restorer (DVR) is one of the key components used to mitigate the supply voltage quality disturbances in terms of voltage sags and swells in the distribution system. It consists of an energy storage unit, a voltage source inverter, a filter, a coupling transformer and the control system. This paper presents three different inverter configurations of dynamic voltage restorer (DVR) for mitigation of voltage events such as voltage sags and swells with sudden addition or removal of the nonlinear load. These three configurations are voltage source inverter based DVR (VSI-DVR), current source inverter based DVR (CSI-DVR) and impedance or Z-source inverter based DVR (ZSI-DVR). The d-q control technique is used to control the operation of the DVR. The response of ZSI-DVR for mitigation of voltage sags and swells are investigated and compared with VSI-DVR and CSI-DVR using MATLAB/SIMULINK environment.

2025, Indonesian Journal of Electrical Engineering and Computer Science

This paper describes the comparative analysis of three different control techniques of distributed flexible AC transmission system (DFACTS) controller called as distributed static synchronous compensator (DSTATCOM), aimed at power quality (PQ) enhancement in terms of voltage sag mitigation in a threephase four-wire (3p4w) distribution system. A DSTATCOM is one of the major power quality improvement devices which consist of a DC energy source, a voltage source inverter (VSI), a filter, a coupling transformer and the control system. The control strategy based on synchronous reference frame (SRF) theory, instantaneous active and reactive current (IARC) theory and propositional-integral (PI) controller has been used for reference current generation of voltage source inverter (VSI) based DSTATCOM. The SRF, IARC and PI control based DSTATCOM is validated through dynamic simulation in a MATLAB\SIMULINK environment under linear as well as nonlinear loads.

2025, IEEE Transactions on Industrial Electronics

A discrete-time proportional integral derivative (PID) controller, the manipulated variable of which takes two values, i.e., ON and OFF, is proposed and analyzed. Oversampling technology is employed in the controller design. As to the structure of the controller, a cascade type and a built-in type are proposed. An experimental example is presented.

2025, Mathematical and Computer Modelling of Dynamical Systems

Infinite-dimensional port-Hamiltonian representation of irreversible processes accounting for the thermal energy domain is presented. Two examples are studied: the transmission line and a non-isothermal reaction diffusion process. The proposed approach uses thermodynamic variables in order to define the infinite-dimensional interconnection structure linking the different phenomena. A presentation is given for one-dimensional spatial domain. For the transmission line, the Hamiltonian is the total energy and for the reaction diffusion process it is the enthalpy or the opposite of entropy.

2025, 2011 IEEE Conference on Clean Energy and Technology (CET)

This research aimed to design a three-phase ac-dc buck converter to achieve low-THO unity-power-factor sinusoidal input current and regulated dc voltage via modified pulse-width-modulation (PWM) technique. A 6-switch topology with bidirectional power flow capability is presented. The modified PWM switching strategy is discussed and verified via Matlab-Simulink and implemented in Digital Signal Processor (DSP) TMS320F28335. The topology and the switching technique performed well for sinusoidal input current, power factor, harmonic distortion level of the ac input currents, and regulated dc voltage, and enabled return of power flow from the dc side back to the ac. Simulation using Matlab-Simulink is presented to verify the effectiveness of the circuit configuration.

2025, EUROCON 2011 - International Conference on Computer as a Tool - Joint with Conftele 2011

This paper presents the analysis and design of a DC-DC series resonant power converter used as a contactless battery charger (5V DC -1A) for a mobile electronic device. The system is enclosed in a sealed spherical pack containing temperature and humidity wireless sensors for real time composting process monitoring. Some particular characteristics of the device and its physical dimensions impose a maximum distance between the primary and the secondary transformer windings of 20mm. For transformer type core and windings configuration selection criteria, an experimental characterization of loosely coupled power transformers was evaluated. Both simulation and experimental results, obtained in a 150kHz laboratory prototype, were used as evidence of the developed theoretical models and analysis.

2025

This paper presents a gate driver topology designed in a GaN on Si technology to be implemented on the same substrate with a 650-V, 500-mΩ power GaN switch. The driver consists of three buffer stages, three anti-cross conduction networks, two level shifters, and three bootstrap capacitors. Simulations of the proposed GaN driver are presented and a comparison with the conventional solution, assuming the same static current consumption, is provided. The proposed circuit not only solves cross-conduction problems, which are crucial for the limitation of undue dynamic power consumption, but it is also aimed at limiting static current consumption by using a bootstrap technique. Simulations show that the power GaN transistor driven by a 6-V, 2.5-MHz PWM signal with 50% duty cycle through the proposed driver, reaches a nominal switching speed as high as 50 V/ns at 27 °C, with an average current consumption of about 1 mA, over the entire range of temperature from −40 °C to 150 °C.

2025, IEEE Transactions on Power Electronics

The 100 MVA intertie is mainly characterised by the following innovations: hard driven GTO (HD-GTO) with a new housing series connection of hard driven GTOs low-inductive high power HD-GTO inverter valve fuseless high power HD-GTO inverter. The presented hard driven GTO technology allows the robust, reliable and cost-efficient series connection of GTOs. The concept of the 100 MVA intertie, which is based on the HD-GTO technology, is reviewed. The development of the high power HD-GTO inverter module according to a state-of-the-art development process is presented. With the use of a circuit simulator with accurate physical models of the power semiconductors, especially the concept phase, the development phase and the verification phase have been supported.

2025, IEEE Transactions on Industry Applications

Use of multilevel inverters has become popular in recent years for high-power applications. Various topologies and modulation strategies have been investigated for utility and drive applications in the literature. Trends in power semiconductor technology indicate a tradeoff in the selection of power devices in terms of switching frequency and voltage-sustaining capability. New power converter topologies permit modular realization of multilevel inverters using a hybrid approach involving integrated gate commutated thyristors (IGCT's) and insulated gate bipolar transistors (IGBT's) operating in synergism. This paper is devoted to the investigation of a hybrid multilevel power conversion system typically suitable for high-performance high-power applications. This system, designed for a 4.16-kV 100-hp load is comprised of a hybrid seven-level inverter, a diode bridge rectifier, and an IGBT rectifier per phase. The IGBT rectifier is used on the utility side as a real power flow regulator to the low-voltage converter and as a harmonic compensator for the high-voltage converter. The hybrid seven-level inverter on the load side consists of a high-voltage slow-switching IGCT inverter and a low-voltage fast-switching IGBT inverter. By employing different devices under different operating conditions, it is shown that one can optimize the power conversion capability of the entire system. A detailed analysis of a novel hybrid modulation technique for the inverter, which incorporates stepped synthesis in conjunction with variable pulsewidth of the consecutive steps is included. In addition, performance of a multilevel current-regulated delta modulator as applied to the single-phase full-bridge IGBT rectifier is discussed. Detailed computer simulations accompanied with experimental verification are presented in the paper.

2025

The suitability of the direct modular multi-level converter for high power, low speed, gear-and transformerless drives is investigated. Control methods which optimize the capacitor voltage ripple are presented, analyzed and verified in... more

2025, International Transactions on Electrical Energy Systems

e power electronic interface is critical in matching a distributed generation (DG) unit's characteristics to grid requirements as most DG technologies rely on renewable energy. Increased adoption of electric vehicles (EV) is seen as a positive step toward minimizing air pollution as well as carbon emissions. Rapid proliferation of electric vehicles as well as charging stations has exacerbated voltage quality as well as harmonic distortion difficulties, which harm the efficiency of combined renewable energy. is research proposes novel hybrid design techniques in control systems that enhance the energy efficiency of electronic converters for power electronics. e control system enhancement has been carried out using a hybrid energy storage electric convertor, and energy efficiency is improved using a synergetic battery reference adaptive controller. A plug-in hybrid electric vehicle (PHEV)'s internal combustion engine with a small photovoltaic (PV) module is utilised to assess a proposed control method which effectively regulates electric power on-grid by draining electricity from batteries during peak hours as well as then charging them during off-peak times, lowering the load on the converter as well as allowing electric vehicles to charge faster. Experimental results show the constant acceleration case obtained battery current of 92 Amps, ultracapacitor current of 89 Amps, charging voltage of 88 V, DC load current of 85 Amps, battery SOC of 72%, and the time-varying acceleration proposed technique obtained current of 94 Amps, and ultracapacitor current of 90 Amps, charging voltage of 90 V, DC load current of 82 Amps, battery SOC of 79%.

2025, IET Cyber-Physical Systems: Theory & Applications

Decentralization of generation and increasing utilization of information communication systems bring challenges to present power system modeling approaches. This work applies functional modeling for monitoring and modeling of distributed energy resources, with wind turbine generator (WTG) application as a case study. First, we established a functional model of a generic WTG through the multilevel flow modeling approach. The model acts as basis of a state estimator (SE) for monitoring the WTG. Afterwards, the application of the SE is extended for wind power plant monitoring and control. The case study results show that the SE can efficiently limit the impact of information errors from different data integrity attacks during active power curtailment.

2025, 2014 International Symposium on Power Electronics, Electrical Drives, Automation and Motion

In this paper, a rotating contactless power transfer system achieving 200W for space application is presented. Both transformer and electronics designs are presented. A proof-ofconcept prototype, making use of components with space grade... more

2025, IEEE Transactions on Power Electronics

Power converter efficiency is always a hot topic for switch mode power supplies. Nowadays, high efficiency is required over a wide load range, e.g., 20%, 50% and 100% load. Computer-aided design optimization is developed in this research work, to optimize off-line power converter efficiency from light load to full load. A two-stage optimization method to optimize power converter efficiency from light load to full load is proposed. The optimization procedure first breaks the converter design variables into many switching frequency branches. In each fixed switching frequency branch, the optimal designs for 20%, 50% and 100% load are derived separately in the first stage, and an objective function using the optimization results in the first stage is formed in the second stage to consider optimizing efficiency at 20%, 50% and 100% load. Component efficiency models are also established to serve as the objective functions of optimizations. Prototypes 400V to 12V/25A 300W two-FET forward converters are built to verify the optimization results.

2025, Chemical Engineering Transactions

Battery has been widely used in the storage of new energy. In this paper, we focus on the research of the controller design of a battery charging system, in which an isolated dual converter is used for energy conversion. In practical applications, the performance of the battery charging system is always affected by the uncertain circuit parameters. In order to improve its dynamic and steady performance under various uncertainties, a sliding mode control (SMC) strategy is proposed in this paper for the control of the battery charging system. First, the working principle of the isolated dual converter with parameter uncertainties is analyzed in this paper. Then, based on the model of the battery charging system, a SMC strategy based on the Pulse Width Modulation (PWM) method is designed and analyzed in this paper. The influence of variation of switching frequency on the controller parameters design is also discussed in this paper. Finally, simulation results show that, compared with t...

2025, IEEE Transactions on Industrial Electronics

This paper presents a regenerative step-up/stepdown dc-dc zero-voltage-switching pulsewidth-modulation converter with active clamping. The switch losses are reduced due to the implementation of a simple active snubber circuit that provides soft commutation in all the switches of the converter. The theoretical analysis, basic equations, design methodology, and experimental results are shown in this paper. A control methodology to assure the output voltage regulation is also proposed. The main advantages of the proposed power converter are the small number of components, simplicity of the controller, robustness, small weight and size, and high efficiency.

2025, IEEE Transactions on Industrial Electronics

2025, Proceedings of APEC 97 - Applied Power Electronics Conference

Computer and telecommunication systems tend to demand lower supply voltages than 3.3V. This fact raises the challenge of obtaining high efficiency DC/DC converters with low output voltage. We have implemented a compact converter with an output voltage of 1.5V. The output power is 5W and the converter has been provided with galvanic isolation between input and output sides. The windings of the magnetic components are directly integrated in the PCB, which allows to reduce the size. Self driven synchronous rectification allows to obtain very high efficiency (81.2% at nominal conditions, 85.3% maximum) for such a low output voltage.

2025, IEEE Transactions on Power Electronics

2025, IEEE Transactions on Energy Conversion

2025, International Journal of Electronics

Average modelling of PWM converters is reexamined in the light of the behavioural-dependent sources now included in modern versions of electronic circuit simulators. A topology-independent behavioural model is developed to emulate the operation of PWM converters in voltage and current modes, for continuous and discontinuous inductor current cases. It is shown that the operation of the switching part involves, in general, three behavioural blocks: the generic switched inductor model, the duty cycle generator and the inductor current generator. Explicit expressions and equivalent circuits are developed for all possible modes of operation and a PSpice (MicroSim Inc., Irvine, CA) netlist template is appended.