Ozone-generating system and ozone generation method

An ozone generating system, comprising:

• an ozone generating device including discharge electrodes that are arranged opposite to each other to thereby form a discharge space;
• a gas supplying device that supplies an oxygen-containing gas as a source gas for generating ozone to the discharge space;
• a power source device that supplies power for discharging to the discharge electrodes;
• a temperature adjustment device that adjusts a temperature of the discharge electrodes;
• a control unit that controls the gas supplying device, the power source device and the temperature adjustment device, to thereby control an operation of the ozone generating device;
• and
• a detection unit that detects an ozone generation parameter in the ozone generating device;
• wherein, the control unit causes the temperature of the discharge electrodes to increase up to a vaporizing temperature of dinitrogen pentoxide by controlling the temperature adjustment device and the gas supplying device or the temperature adjustment device and the power source device in a cooperative manner, on the basis of the ozone generation parameter output from the detection unit, to thereby control an operation of the ozone generating device to be switched from a normal operation mode to a cleaning operation mode in which surfaces of the discharge electrodes and the discharge space are cleaned up in a state of continuing generation of ozone in the discharge space.