Adaptive Charging System for PEM Fuel Cells Using a 4-Switch Buck-Boost Converter | chapter 6 | Current Approaches in Engineering Research and Technology Vol. 9

Proton Exchange Membrane (PEM) fuel cells are integral to clean energy applications, often necessitating the integration of batteries to ensure consistent power delivery. A critical requirement in such systems is the precise matching of the battery voltage to the PEM fuel cell's output voltage to achieve optimal performance. Additionally, since PEM fuel cells operate as current-output systems, meticulous control of current is essential to maintain the fuel cell at its peak performance point, thereby maximizing both efficiency and lifespan. This paper introduces an adaptive 4-switch buck-boost DC-DC converter specifically designed to charge batteries from PEM fuel cells while ensuring voltage compatibility and optimal current management. The converter's interleaved design effectively minimizes ripple and enhances thermal management. Furthermore, the study compares the performance of single-phase and four-phase converter configurations, demonstrating the superior efficiency and stability of the four-phase approach. Simulation results validate the converter's effectiveness, presenting a robust solution for the seamless integration of PEM fuel cells with battery systems.

 

Author (s) Details

 

Puneet Kaur
Electrical and Electronics Engineering Department, UIET, Panjab University, Chandigarh, India.

 

Please see the book here:- https://doi.org/10.9734/bpi/caert/v9/2827

Performance Evaluation of DC-DC Converters for Solar Photovoltaic-fed Switched Reluctance Motor Applications in Electric Vehicles | Chapter 4 | Contemporary Perspective on Science, Technology and Research Vol. 2

This member describes the performance of a Cosmic PV-powered switched disinclination motor accompanying low torque ripple in energetic vehicle applications. The prominent impression of solar energy in our nation’s strength requirements has become ruling in recent age. It is a boundless source of strength and the finest substitute for some other non-renewable beginnings in our country. Switched reluctance motors have enhance increasingly prevalent in the electric car subdivision due to their unbreakable looks, which include their enthusiastic ability, simple construction, lack of rotor windings, and depressed maintenance requirements. Nevertheless, because to its nonlinear face, SRM's large torque ripple is a restraint. This paper analyzes the performance of a exchanging reluctance engine with several DC-DC converters, and compares the judgments in terms of the motor's speed and turn ripple %. The switching time of the preacher is controlled by the MPPT controller, that uses incremental conveyance and the Integrator method. The converters presented in this place work are the Boost converter and the Cuk converter. These two types of converters are created in MATLAB software and their characteristics are analysed while furnishing the switched reluctance engine. . The DC-DC converter harvest is given to the input of capacity converter, which is irregular bridge converter. This converter drives the changed reluctance motor under changeable load conditions. By variable the duty cycle of the DC-DC preacher circuit the output service can be controlled. This in proper sequence controls the speed of the motor effectively. The verdicts of the simulation are used to resolve how well the suggested scheme works with the engine. From the results, it is evident that using this somewhat converter improves the speed and turn ripple performance of the cosmic PV powered switched disinclination motor. Hence, it is acceptable for electric vehicle uses, which require less revolution ripple and mechanical shakings.

Author(s) Details:

G. Mahalakshmi,
Sri Krishna College of Engineering and Technology, Coimbatore, Tamil Nadu, India.

S. Kanthalakshmi,
PSG College of Technology, Coimbatore, Tamil Nadu, India.

K. Maharaja,
University of Technology and Applied Sciences, Al Musannah, Oman.

Please see the link here: https://stm.bookpi.org/CPSTR-V2/article/view/12861

Current Research on Forward Converter Based Switch Mode Power Supply with Modified Boost Converter as PFC | Chapter 1 | Emerging Trends in Engineering Research and Technology Vol. 4

Due to modern era industrialization, the requirement of DC power is drastically increased. Enemy harmonics and bad power factor are the primary most concerns in power electronics. In mono-stage SMPS system, it is observed that percentage sharing of real power in apparent power is quite low and also observed that undesired harmonics are found enrich in source current. This project deals with two stage SMPS system in which forward converter is used as step down converter and modified boost converter is used to increase the real power share in apparent power of source as well as to reduce the higher frequency currents in source current. Isolated converters are preferred to get reduced ground bounce as well as to isolate from high voltage circuit. To get rid of kilo-hertz currents in load, it is preferred to make the terminal capacitor voltage ripple free with the use of closed loop control system. Boost converter is adjusted to get rid of high stresses over a switch which further reduces switching losses to noticeable percentage. The settling time of terminal voltage was adjusted to a fraction of second without affecting the output DC’s smoothness.

Author(s) Details

Naspuri Arun Raju
Department of Electrical and Electronics Engineering, GRIET, Hyderabad, Telangana, India.

View Book :-  http://bp.bookpi.org/index.php/bpi/catalog/book/180