alexa A Positive Buck-Boost DC-DC Converter with Mode-Select Circuit Using PID Controller
ISSN ONLINE(2319-8753)PRINT(2347-6710)

International Journal of Innovative Research in Science, Engineering and Technology
Open Access

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Special Issue Article

A Positive Buck-Boost DC-DC Converter with Mode-Select Circuit Using PID Controller

K.Vijaykaran1, Mrs.J.Jeyashanthi2,
  1. M.E .Power Electronics& Drives, Department of EEE, Sethu Institute of Technology, Pulloor, Kariapatti, Virudhunagar, Tamilnadu, India.
  2. M.E .Power Electronics& Drives, Department of EEE, Sethu Institute of Technology, Pulloor, Kariapatti, Virudhunagar, Tamilnadu, India.
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Abstract

The proposed work is to design a positive buck-boost converter with mode-select circuit and with wide range of input voltages. Four switches produce more switching and conduction losses when the converter operates in high frequency. In order to avoid those losses, we employ mode-select circuit in which the converter can work in three different modes as buck, boost and buck-boost mode. With the mode-select circuit the losses in switches are reduced and by the way the converter efficiency is improved. To lessen the loss of switches as the positive buck-boost converter operates in wide range of supply voltages, it is essential to avoid power converters operating in buck-boost mode. By implying feed-forward techniques, the proposed converter can improve its transient response when the supply voltages are changed. It is typically used to compensate for input variations and provide tighter control response of the output voltage. With the above mentioned techniques the proposed converter can get better power efficiency and extends the battery life. The proposed work was simulated by using MATLAB R2012a (v.7.14).

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