Fixed-switching Frequency Sliding Mode Control Applied to Power Converters

Released on by Víctor Repecho del Corral
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  • Fixed-switching Frequency Sliding Mode Control Applied to Power Converters Book Detail

  • Author : Víctor Repecho del Corral
  • Release Date : 2018
  • Publisher :
  • Genre :
  • Pages : 186
  • ISBN 13 :
  • File Size : 3,3 MB
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Fixed-switching Frequency Sliding Mode Control Applied to Power Converters by Víctor Repecho del Corral PDF Summary

Book Description: The application of the sliding mode control in power converters has a well-known inconvenient from the practical point of view, which is to obtain fixed switching frequency implementations. This thesis deals with the development of a hysteresis band controller in charge of fixing the switching frequency of a sliding motion in power electronics applications. The proposed control measures the switching period of the control signal and modifies the hysteresis band of the comparator in order to regulate the switching frequency of the sliding motion. The proposed structure becomes in an additional control loop aside from main control loop implementing the sliding mode controller. In the first part of the thesis, the switching frequency control system is modelled and a design criteria for the control parameters are derived for guaranteeing closed loop stability, under different approaches and taking into account the most expectable working scenarios. In the second part of the thesis, the proposed strategies are applied to several power converters prototypes. Specifically, DC-to-DC and DC-to-AC power converters are built and the experimental results are shown. In this part, the strategies used for implementing the controllers are also deeply discussed.

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