A plate-type ozone generator includes a first ground electrode plate, second ground electrode plate, central plate and reactor middle frame arranged between first end and second end of plate-type ozone generator, wherein the central plate houses the reactor middle frame that is moveable from centre of central plate. The frame includes a high-voltage electrode plate, first dielectric barrier plate and second dielectric barrier plate, first gap being formed between first dielectric barrier plate and first ground electrode plate and second gap being formed between second dielectric barrier plate and second ground electrode plate. The first gap and second gap are filled with gas. A power source is used to charge the first ground electrode plate, second ground electrode plate, and high-voltage electrode plate. Dielectric barrier discharge occurs for generating ozone.

In an ozone generating system which performs intermittent operation, that is, an operation in an ozone generating operation period in which ozone is generated by discharging gas including oxygen at a discharge electrode part and an operation in an ozone generating operation standby period in which ozone is not generated by stopping discharge are alternately repeated, a gas circulating device which circulates gas in the ozone generating apparatus and removes at least nitric acid from the gas which is circulated is connected to the ozone generating apparatus.

A current-limiting reactor that regulates a short-circuit current, a controller that controls an action of an inverter, and a detection unit that detects a short circuit. The controller causes the inverter to stop when a short circuit has occurred.

The present invention relates to a method of operating an ozone generator, a transformer assembly and an ozone generator apparatus configured to be operated at an operational frequency range between 25-40 kHz, such as between 30 and 40 kHz.