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Zafer Ortatepe
2018-10-16
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Matrix Converter Controlled DFIG

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### DESCRIPTION ( Introduce yourserlf and your project)

Hi; I am a PhD student in Electrical and Electronics Engineering and my project is "Model implementation for doubly fed indution generator used in variable speed wind turbines". I need some PCB production process within the scope of this project.


### TECHNICAL DETAILS (With project photos)

Today, renewable energy is one of the most preferred electricity generation method due to the low operating costs and environmental compatibility reasons. This proposed project, wind turbine that is an important part of the renewable energy system design, modeling and control will be carried out with the Matrix Converter (MC).  MC is used as the excitation power supply for the Doubly Fed Inductıon Generator (DFIG). It has many advantages such as high efficiency, no need for high-value filters, capability of bi-directional energy conversion and no need for DC bus. The MC is used to regulate the active and reactive power of the stator by means of a rotor. It also satisfies the unity power factor (UPF) and bi-directional power flow ability of energy. 

Matrix Converter Topology

The matrix topology is a converter that can provide AC-to-AC power cycle directly. This circuit consisting of bidirectional switches connected to each other is arranged to connect any of the output lines of the inverter to any of the input lines. Figure 1 shows a typical three-phase matrix converter (MC) circuit with bidirectional nine switches; where A, B, C represent the input phases and a, b, c represents the output phases. The switches allow any input phase to be connected to any output phase. The output waveform is generated using a suitable PWM signal similar to a normal inverter, but the input of the inverter is supplied from a three-phase constant frequency and a fixed voltage AC source instead of a fixed DC voltage source. This approach eliminates the need for large reactive energy storage elements used in conventional inverter based systems.

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Figure 1. The topology of MC.

The output voltages of the MC are generated from direct input voltages due to the absence of energy storage elements between the input and the output [25]. The MC has many advantages over the traditional converter and inverter. Due to the switches are bidirectional, they can transfer energy in two directions without the need for any additional elements or algorithms. Compared to conventional power conversion technologies, the size of the power circuit can be considerably reduced due to the absence of large energy storage elements such as capacitors or inductances. In addition, the total number of switches is more than the back-to-back converter, but the absence of the DC bus capacitor has increased the efficiency and system life. According to the literature researches, it is decided to use MC due to various advantages and the model of the system to be applied is given in Fig. 2.

image.png

Figure 2. MC controlled DFIG based WECS.

 

Aims and goals

 

This project has been proposed to contribute to the economy, to develop new technologies and to ensure the most efficient use of renewable energy sources of public/private sector organizations. It is thought that natural energy will contribute to the economy of the country due to the lack of environmental damage and lack of exhausted energy. The development of technology and production methods in this field is one of the main aim of the study.


### Words to PCBWay

Firstly, I would like to express my sincere gratitude to your website for tremendous support. Your immense knowledge and support will form the milestones of this work. I do not doubt you will help me with my PCB production. Sincerely.


  • Renewable energy
  • matrix converter (MC)
  • doubly fed induction generator (DFIG)

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