Modeling and control of a three-phase T-type inverter
Inverters are very important for energy transmission. How to construct a stable and controllable inverter with high power quality is a hot topic in current research. In this dissertation, the advantages of three-level(3L) inverters are compared with two-level(2L) inverters. Several different 3L inve...
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| Format: | Thesis-Master by Coursework |
| Language: | English |
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Nanyang Technological University
2023
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| Online Access: | https://hdl.handle.net/10356/166810 |
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| Institution: | Nanyang Technological University |
| Language: | English |
| Summary: | Inverters are very important for energy transmission. How to construct a stable and controllable inverter with high power quality is a hot topic in current research. In this dissertation, the advantages of three-level(3L) inverters are compared with two-level(2L) inverters. Several different 3L inverters and the current research status of PWM are introduced in the dissertation. Specifically, the working state of the T-type inverter, the circulating current situation, switching loss and efficiency are analyzed.
On the basis of theoretical analysis, MATLAB/Simulink and Wolfram Mathematica are utilized to carry out parameter design and simulation model establishment of the T-type inverter. Because quasi-proportional resonant control is a very effective method for inverter closed-loop control, models and controller of a single-phase and three-phase inverters are designed based on quasi-proportional resonance(Q-PR) control. According to the simulation waveform based on Q-PR control, T-type inverters have very good output characteristics. |
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