Abstract
A new hybrid step-up converter suitable in applications where large conversion ratios are needed is presented. The topology is still simple, containing only one transistor and three diodes. A detailed dc and ac analysis is performed and all design equations are provided. Compared to other topologies of the same type, the proposed converter exhibits lower or equal current and voltage stresses. A state space model is provided including the conduction losses and based on it the audio susceptibility and the control to output function are derived. As the converter is still of second order with the control to output transfer function exhibiting a right half plane zero, controller design is practically the same like in a Boost topology. It is shown how the proposed converter can be used in a photovoltaic system for performing the maximum power point tracking algorithm using the perturb and observe method. All theoretical considerations are verified through simulation and finally validated by practical experiments.
Highlights
In the context of today’s energy and pollution crisis [1,2], renewable energy sources have gained increasingly more interest [2,3,4,5]
The values for the inductors and capacitor to the ones switching from the simulation
For functional testing of the new proposed converter supplied by PV panels and employing a maximum power point tracking (MPPT) controller, some measurements under constant irradiance coming from the Sun and clear sky conditions were acquired
Summary
In the context of today’s energy and pollution crisis [1,2], renewable energy sources have gained increasingly more interest [2,3,4,5]. As defined, these sources are naturally available on a practical infinite timescale, are accessible in most geographic locations and climate conditions and have no impact on the environment during the energy harvesting and its distribution [5]. Electrical energy has a wide variety of applications from powering home appliances to heating/cooling, industrial transportation and recently personal transportation [4,5,6,7,8,9]
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