Simulation and Modeling of a AC-DC Converter Controlled by Pulse Width Modulation Using Soft Switching topology
This work presents the design, analysis, and simulation of AC-DC converter topology incorporating a voltage source converter (VSC) and a direct converter, connected with medium frequency transformer isolation. A control method is studied by which it is possible to reduce the transformer core...
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| Format: | Article |
| Language: | English |
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University of Thi-Qar
2019-05-01
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| Series: | مجلة علوم ذي قار |
| Subjects: | |
| Online Access: | https://mail.jsci.utq.edu.iq/index.php/main/article/view/361 |
| Summary: |
This work presents the design, analysis, and simulation of AC-DC converter topology incorporating a
voltage source converter (VSC) and a direct converter, connected with medium frequency transformer
isolation. A control method is studied by which it is possible to reduce the transformer core losses by
only magnetizing the transformer when a Pulse Width Modulation (PWM) pulse should be applied on the
AC side of the system. By alternately commutating the two converters it is possible to achieve soft
switching conditions for all of the semiconductor elements. Furthermore, it is shown that resonant
commutation of the voltage source converter is possible by utilizing the cycloconverter for short
circuiting the transformer terminals.
converter. The PWM voltage is applied to aninductive filter and thereby the AC side current aswell as the power flow through the system can be
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| ISSN: | 1991-8690 2709-0256 |