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| Author(s): |
Jakson Paulo Bonaldo
Total Authors: 1
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| Document type: | Master's Dissertation |
| Press: | Campinas, SP. |
| Institution: | Universidade Estadual de Campinas (UNICAMP). Faculdade de Engenharia Elétrica e de Computação |
| Defense date: | 2010-04-15 |
| Examining board members: |
José Antenor Pomilio;
José Renes Pinheiro;
Cesar Jose Bonjuani Pagan
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| Advisor: | José Antenor Pomilio |
| Abstract | |
This work discusses power electronic converters used in ozone generation by highfrequency electrostatic discharge, suggesting techniques to improve the system performance and increase its reliability. One of the techniques is used to avoid saturation of the high voltage transformer through the introduction of a fast current control. A slow voltage control is introduced too. This control eliminates average levels that may exist under the voltage, thus avoiding the actuation of the current control for long time. A poly-phase topology is studied in order to increase the power delivered to the load and, consequently, the generation of ozone. A new control technique is proposed to equalize the power among the phases of the converter. Discrepancies in power values, among converter phases, are due to the dispersion of the parameters of the ozone generating cells and transformers, leading to a load imbalance. The equalization technique consists basically on applying unbalanced voltages to the load, in order to compensate the load unbalance. Therefore, it is necessary to perform the feedback voltage and currents on the primary side of transformers. It is presented studies, as well as, simulations and experimental results to validate the topology and the proposed techniques. The results obtained from the implementation converge to the simulated ones, indicating that the studied methods are feasible for implementation (AU) | |
| FAPESP's process: | 08/03415-9 - Three-phase inverter for ozone production by high-voltage electrostatic discharge |
| Grantee: | Jakson Paulo Bonaldo |
| Support Opportunities: | Scholarships in Brazil - Master |