A high efficient and robust MPPT control of a hybrid system

Tez Türü: Yüksek Lisans

Tezin Yürütüldüğü Kurum: Gazi Üniversitesi, Fen Bilimleri Enstitüsü, Elektrik Elektronik Mühendisliği, Türkiye

Tez Danışmanı: Doç. Dr. Korhan Kayışlı

Tezin Onay Tarihi: 2023

Tezin Dili: İngilizce

Özet:

The energy is needed for all work done in daily life. This energy can be based on human power, mechanical power or electrical power. Power is the key point. For this reason, fossil fuels, nuclear energy, and other renewable sources are used to obtain the required power. In this thesis renewable energy sources are used to produce power. During literature review there is no PV, TEG, Fuel Cell combination with Super Twisting Sliding Mode Control based MPPT application. For this reason the PV,TEG and Fuel Cell is selected as source and Super Twisting Sliding Mode Control is selected as a control method. PV panel is used to convert the sun light or light energy as the electrical energy. PV is commonly used source in the literature. The other source is TEG (Thermoelectric Generator). TEG device uses temperature difference between two surfaces to generate electrical energy. The third source is Fuel Cell. The Fuel Cell used chemical reaction to produce electrical energy. In the system, Fuel Cell will be used as a source and by using reversable types of fuel cell or electrolyser, the fuel cell can be used as battery. Power and voltage characteristics of the mentioned three sources are different from linear power sources. The RES sources have Maximum Power Point (MPP) in the Power Voltage Characteristic. MPP can be obtained from using Maximum Power Point Tracking (MPPT) methods. In the thesis, Super Twisting Sliding Mode Control is selected. The aim is to obtain efficient, sustainable design. For this reason, the control method is very important. Super Twisting Sliding Mode control is reducing the disadvantages of the Sliding Mode Control Method. In the thesis MPPT control the three boost converter and Buck Converter. The system is connected 3 Phase Half Bridge based DC/AC inverter that controlled with Sinusoidal Pulse Width Modulation (SPWM). The aim is to obtain 50 Hz, 220 Vrms voltage on load side. The system is worked under two different load types as resistive, and motor load. The system behavior is tested under ideal condition (there are three different test in ideal condition) and under nonideal components (real switching units and components). The aim is to obtain efficiency greater than 98%. To obtain the advantages and disadvantages of the controller, Simulation is tested from using Super Twisting Sliding Mode (STSM) Control and Perturb and Observe Control (P&O). The aim of the test is to ensure the controller performance.