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Design and Construction of High-voltage Linear Regulator with Minimal Losses for Power Supply of Microwave Tube Cathode

Osanloo, Mohsen | 2016

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 48903 (05)
  4. University: Sharif University of Technology
  5. Department: Electrical Engineering
  6. Advisor(s): Kaboli, Shahriyar
  7. Abstract:
  8. Microwave tubes are widely used in the telecommunications transmitters. high voltage power supplies are used to feed them. According to the specifications that arises for microwave tubes, To take advantage of these tubes need to maintain and stabilize voltage in a certain amount to be felt. If the tube supply voltage changes, the desired output parameters such as RF output power quality will change. To stabilize the voltage is within acceptable limits provided in different ways. One common method is the use of switching regulators due to the high efficiency compared to linear regulators considered. But it also will bring problems. Some of these problems can be pointed to electromagnetic interference. So we need to design a linear power to avoid this problem. series resistance is Equipment that can act as voltage regulators. From this resistance can be used to create a voltage drop in the power supply output voltage. Problems that will be created is the losses and thus reduce the efficiency performance that is mentioned in thesis. To avoid problems caused by the following as well as reduce losses inductor regulator proposed. According to disadvantages of mentioned regulators, structure of variable inductor proposed in thesis, The output voltage from no-load to full load is fixed. According to the inductor current through the inductor voltage is created, and The output voltage will stabilize. In the proposed method, several points should be considered. The design should be done in such a way that for a wide range of output voltage regulatorThe system is responsive and stabilize voltage error. Dynamic systems also have to be considered a good response time to controller. To achieve good dynamic voltage stability regulator should be examined for changes in load and input voltage. In the thesis given practical tests and simulations performed on the structure of the proposed variable inductor, structure of inductor regulator investigated. Different core were compared in terms of losses and voltage change. The dynamic response of variable inductor was investigated
  9. Keywords:
  10. Losses ; Power Supply ; Inductive Source Degenerated ; Microwave Tubes ; Linear Regulator

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