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| Content Provider | IET Digital Library |
|---|---|
| Author | Ghamri, Lamyaa Y. Awadh, Hamda Shamsi, Najla Al Khateri, Saeed Al Khurram, Adil Rehman, Habibur |
| Abstract | Conventional automatic voltage regulator (AVR) schemes use thyristor-based rectifiers in which the generator field voltage is varied by changing the thyristor's firing angle. The conventional AVR has been known to cause voltage sags and extended under-voltages, especially under fault conditions. Several control schemes such as digital proportional–integral–derivative (PID) controllers, adaptive control schemes, and intelligent control schemes have been proposed in the literature. However, these schemes increase the complexity of the system. This work proposes a DC−DC converter-based AVR as an alternative to the rectifier-controlled AVR. The DC−DC converter is arranged in step-down (buck-type) configuration. The DC−DC converter uses metal-oxide-semiconductor field-effect transistor/insulated-gate bipolar transistors and has a faster response than the thyristors, thereby resulting in faster and precise control of the generator field voltage. The DC−DC converter is connected to the field circuit of the generator, and the terminal voltage of the generator is regulated by a PI controller by varying the converter duty cycle to control the generator field voltage. Simulation and experimental investigation has shown that the proposed scheme exhibits a better transient response and is robust under DC input voltage variation and generator load changes. |
| Starting Page | 4111 |
| Ending Page | 4115 |
| Page Count | 5 |
| Volume Number | 2019 |
| e-ISSN | 20513305 |
| Issue Number | Issue 17, Jun (2019) |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/joe/2019/17 |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/joe.2018.8114 |
| Journal | The Journal of Engineering |
| Publisher | The Institution of Engineering and Technology |
| Publisher Date | 2019-01-22 |
| Access Restriction | Open |
| Rights License | Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0/) |
| Subject Keyword | Adaptive Control Adaptive Control Scheme Control of Electric Power System Control System Analysis Control System Synthesis Conventional Automatic Voltage Regulator Scheme Conventional AVR DC Input Voltage Variation DC-DC Power Converter DC−DC Converter-based AVR Digital Proportional–integral–derivative Controllers Generator Field Voltage Insulated Gate Bipolar Transistors Insulated Gate Field Effect Transistors Intelligent Control Intelligent Control Scheme Machine Control Metal-oxide-semiconductor Field-effect Transistor/insulated-gate MOSFET Novel AVR Design PI Control PI Controller Power Converter Power Generation Control Power Supplies to Apparatus Power Supply Quality Precise Control Rectifier Rectifier-controlled AVR Self Adjusting Control System Synchronous Generator Synchronous Machine Synthesis Method Terminal Voltage Three-term Control Thyristor-based Rectifier Thyristors Voltage Control Voltage Regulators |
| Content Type | Text |
| Resource Type | Article |
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