[002] Improved Configuration for Dc to Dc Buck and Boost Converters

Author

Farideh Khodabakhshi, Department of Electrical Engineering, Masjedsolyman Branch, Islamic Azad University, Masjedsolyman, Iran and Toraj Taheri, Department of Electrical Engineering, Masjedsolyman Branch, Islamic Azad University, Masjedsolyman, Iran.

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Abstract:

Boost dc to dc converter is used to change the input voltage level to a desired output voltage level more than the input voltage magnitude and buck dc to dc converter is used to change the input voltage level to a desired output voltage level less than the input voltage magnitude. This paper proposed a novel method for increasing output power by utilizing two storage elements (inductor and capacitor) for boost converter. By analyzing and simulating with Matlab software, the results are provided. Then it is compared with conventional buck and boost inverter. In this improved converter, two inductors used for feeding the load by two switches of insulated gate bipolar transistor (IGBT) type. One inductor is charged by the source voltage while another inductor was discharging its energy into the load during the same time. With this novel structure, output power generation was almost double and the output voltage reduced to half.

Index Terms— Boost dc-dc converter, buck dc-dc converter, ripple voltage.

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