Graduate papers
  
Description of the graduate paper
Form of studies Master
Title of the study programm Computerised Control of Electrical Technologies
Title in original language Enerģijas elektronikas pārveidotāju pielietojums hibrīdās atjaunojamās enerģijas sistēmās
Title in English Power Electronics Converter Applications to Hybrid Renewable Energy
Department International Cooperation and Foreign Students Department
Scientific advisor Iļja Galkins
Reviewer Ingars Steiks
Abstract Hybrid renewable energy systems are growing rapidly nowadays and it would become a new learning opportunity for the future generation because of environmental friendly effects and nature. Solar, as well as wind energy resources, are connected to each other which would have the real potential to complete the power demand. But the only wind energy system sometimes not be technically efficient in all aspects because of low wind speeds and being more unpredictable compare to solar energy. The main objective and the primary reason to make a combined utilization of the renewable system and that are being widely used as an option of nonrenewable sources and it is called a hybrid renewable system. Basically, this thesis presents the basic application of advanced power electronics in hybrid renewable generating systems. There will be a design of a multi-input dc to dc converter which can be used in a hybrid renewable energy system. Here mainly rectifier and dc to dc boost converter play a major role and rectifier can be received output voltage of generator through dc-link voltage. The output voltage of the dc to dc converter is controlled by the current regulated PWM voltage source inverter at a constant value by balancing the dc-link input and output power. This thesis also gives an insight into the evaluation of the existing converter topologies of multi-input converters and inverters by considering the different parameters. Through which a suitable characterization of promising converter topology can opt for either stand-alone or hybrid renewable energy resources. After designing topologies of inverters and converters it is important to see the result of the simulation. It will be an analysis of different reference past simulations for the good performance of the hybrid systems. After the simulation results, it can be easily concluded that which things technically need to improve in design of multi-input inverter and multi-input converter.
Keywords Hybrid renewable energy - learning opportunity -future generation - environmental -effect -wind energy resources-connected -real potential -complete-the power demand.- wind energy system - technically efficient-low wind speeds -unpredictable-compare -solar energy.-multiinputconverters-inverters-simulation-efficiency-voltage -current-improvement-performance-capacitor-resistance-load-power-three state converter-output power-circuit-assumption-diagram-parellel-conclusion-demand of electronics
Keywords in English Hybrid renewable energy - learning opportunity -future generation - environmental -effect -wind energy resources-connected -real potential -complete-the power demand.- wind energy system - technically efficient-low wind speeds -unpredictable-compare -solar energy.-multiinputconverters-inverters-simulation-efficiency-voltage -current-improvement-performnce-capacitor-resistance-load-power-three state converter-output power-circuit-assumption-diagram-parallel-conclusion-demand of electronics
Language lv
Year 2020
Date and time of uploading 04.09.2020 12:50:43