دانلود رایگان مقاله Fast Transitions Between Current Control Loops of the Coupled-Inductor Buck–Boost DC–DC Switching Converter

دانلود رایگان مقاله Fast Transitions Between Current Control Loops of the Coupled-Inductor Buck–Boost DC–DC Switching Converter

 

AUGUST 2013

 

IEEE TRANSACTIONS ON POWER ELECTRONICS

 

Fast Transitions Between Current Control Loops of the Coupled-Inductor Buck–Boost DC–DC Switching Converter

 

Abstract

An already published current control strategy for the coupled-inductor buck–boost converter is able to change its aim from controlling the input current to controlling the output current, and vice versa, depending on the instantaneous operation point and the applied current references. The main drawback of the two PI-based control implementation is its slow response when the control aim is changed from one current to the other. Due to the magnetic coupling, the converter’s control-to-input and controlto- output current small signal transfer functions exhibit similar first-order characteristics. Therefore, it is possible to transform the previous control scheme to a PI-based one that exhibits faster and, in certain cases, much faster transitions between input and output current control operation. The presented experiments also show that the steady-state behavior of the converter is unaffected by the new control implementation.

Index Terms—Average current-mode control, fast control response, input and output current control, noninverting buck–boost converter.

 

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