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Circuit analysis and modeling of a phase-shifted pulsewidth modulation full-bridge-inverter-fed ozone generator with constant applied electrode voltage
Author(s)
Hothongkham, Prasopchok
Date Issued
December 1, 2010
Type
Article
Abstract
This paper proposes a circuit analysis and system modeling of an ozone generator using a phase-shifted pulsewidth modulation full-bridge inverter connected to two electrodes via a step-up transformer. The circuit operation of the inverter is fully described. Approximate models of the high-frequency transformer and the ozone-generating tube are given. Model parameter values are obtained from electrical characteristic measurement in conjunction with physical dimension calculation. In order to ensure that a zero-voltage soft-switching mode always operates over a certain range of a frequency variation, a series compensated resonant inductor is included. The advantage of the proposed system is a capability of varying ozone gas production quantity by varying the frequency of the inverter while the applied electrode voltage is kept constant, in order to overcome a high-frequency effect on the transformer voltage regulation. As a consequence, the absolute ozone production affected by the frequency is possibly achieved. The correctness and validity of the proposed system are verified by both simulation and experimental results. © 2011 IEEE.
Citation
IEEE Transactions on Power Electronics, 25(7), 1739-1752, 2010