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The need of dc–dc switching converters for power supplies with high-voltage gains has increased in the recent years due to new applications in areas as renewable energy systems, transportation, industrial, medical, and others. A quadratic boost converter is a useful topology to obtain a step-up output voltage; however, a major drawback is the presence of a higher voltage stress over the active and...
The main goal of this paper is to model and control a tilt-rotor aerial robot for interactive operations via a 1DOF robotic manipulator. The modeling is derived by means of the Euler-Lagrange formulation, providing couplings between the robotic manipulator and the rotorcraft. The aerial robot is fully actuated and features thrust vector control, having a more flexible aerial profile. In terms of control,...
Fuel-cell stacks are an attractive and efficiently way for power generation; however, its low and unregulated DC output voltage demands a DC-DC conversion stage to step-up the voltage to suitable levels. In this way, a transformerless boost converter with high step-up conversion ratios is proposed in this work to process the energy from a fuel-cell stack. This configuration is formed by two inductors,...
In this work, a complete study of the dynamical behavior of a class of switched-capacitor converters is carried out. The relationships between voltages, currents and duty ratio are given, as well as the corresponding ripples on the inductor currents and capacitor voltages that allow the proper selection of elements of the converter. The linear switching, nonlinear average and linear average models...
DC-DC power converters play an important role as interfaces between renewable energy sources and specific applications in AC or DC power systems. In particular, PEM fuel cells are attractive generation systems; unfortunately, they deliver a low and unregulated output voltage. Several converter configurations have been proposed for this application; however, a major drawback is the voltage stress over...
Fuel-cell stacks are an attractive option for power generation; however, this technology presents some drawbacks as slow dynamic response and low unregulated DC output voltage, which depends nonlinearly on the output current. In this paper, a quadratic boost converter with a single active switch is proposed as an interface between a PEM fuel-cell stack and a load. The proposed topology is used to...
A fuel-cell stack generates low and unregulated DC output voltage, which depends on the demanded current. Therefore, a DC-DC converter is required to step up and regulate the output voltage. This voltage can be used as an input for an inverter to generate an AC voltage. In this work, a quadratic boost converter with a single active switch is proposed to obtain high conversion ratios and regulated...
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