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COMPARISON ANALYSIS OF DC-DC CONVERTER HIGH RATIO QUADRATIC BOOST BASED ON LOW BUFFER CAPACITOR STRESS WITH BOOST CONVERTER
Last modified: 2021-11-15
Abstract
Abstract. Renewable energy sources develop along with the development of the current era, such as in solar plants, wind energy plants, and so on. The DC output level for renewable energy is low, so a step-up DC-DC converter is needed before converting it to AC voltage. The converter used to increase the voltage is a boost converter, this converter requires a very high duty cycle to produce a high output voltage, causing problems, namely EMI (Electromagnetic Interference) and a decrease in efficiency. This study discusses the new topology of the dc-dc converter the type of boost, namely a quadratic boost converter based on a low buffer capacitor stress, which is compared and analyzed for its working principle with a boost converter. The configurations possessed by these two circuit topologies are different, so they are also different for circuit analysis, voltage stress, current stress of each semiconductor component and gain results. the resulting output voltage. The analysis in this study uses an analysis of an open switch circuit and a closed switch and uses the inductor voltage second balance method, then determines the specifications of each component and component parameters from the calculation. After getting h calculation results for each component and parameter, then simulate using PSIM software. This specification is used on the same converter component in order to compare the output of the converter, where this specification includes input voltage of 50 V, frequency of 70 kHz, using a duty cycle of 10%-50%. Thus in the design of the converter by using component calculations so that it can be used efficiently in high voltage conversion applications.
References
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