Simulation of TI-SEPIC Converter for BLDC Motor Drives

Power Factor Correction (PFC) is one of the research areas in the field of power electronics due to the enormous power required in various industrial applications. In this work, a SEPIC converter with the Tapped Inductor model which is operated in Discontinuous current Conduction Mode (TI-SEPIC- DCM) is proposed for a BLDC Drive. The proposed TI-SEPIC-DCM also improves the voltage gain with the help of voltage multiplier cell and charge pump circuit. It also helps in attaining the ZVS and ZCS, which results in higher switching frequency range and reduction in size reduction. Moreover, a third order harmonic reduction control loop is also proposed to attain a better third order harmonic elimination. The proposed work has been simulated using MATLAB simulink and the results are also validated

Обоснование параметров преобразователя постоянного тока для источника автономного электро-снабжения

As the Smart Grid concept has become a part of the electric power industry development, DC/DC conver­ters have turned into a matter of increased interest. This is due to their effective coordination in the DC-bus system operating different types of power sources, including renewable ones and energy storage devices (batteries, supercapacitor modules), and various loads. The article analyzes switch mode power supply DC/DC converters for autonomous power supply systems. The application of the SEPIC (Single Ended Primary Inductance Converter) type converter is substantiated. The techniques of determining the parameters of the converter are presented. The active phase at the duty cycle operation has been demonstrated, and justified in accordance with the theoretical behavior in response to an input voltage change above and below the desired output value. A simulation of the converter's operation in the buck and boost modes in order to stabilize the output voltage at a set level has been performed in the MATLAB / Simulink package. The obtained simulation results show the effectiveness of the suggested solution for an autonomous power supply source.  С внедрением концепции Smart Grid в развитие электроэнергетики нарастает интерес к использованию DC/DC-преобразователей для координированной работы на одну систему шин постоянного тока разнотипных источников питания, имеющих в своем составе источники возобновляемой энергии, накопители электроэнергии (аккумуляторные батареи, модули суперконденсаторов), различную нагрузку. В статье выполнен анализ DC/DC-преобразователей для систем автономного электроснабжения. Обосновано применение преобразователя типа SEPIC (Single Ended Primary Inductance Converter). Представлена методика определения параметров преобразователя. Продемонстрирована и обоснована регулировка активного периода коэффициента заполнения в соответствии с теоретическим поведением после изменения входного напряжения выше и ниже желаемого выходного значения. Выполнено моделирование работы преобразователя в режимах повышения, понижения и стабилизации выходного напряжения в пакете MATLAB / Simulink. Полученные результаты моделирования показывают эффективность предлагаемого решения для источника автономного электроснабжения