N-phase ozone generator

An ozone generating apparatus comprising:

• an ozone generator including
• a discharge chamber having a high voltage terminal and a low voltage terminal, and
• a plurality of multi-layer flat-ozone generating units stacked within the discharge chamber, each ozone generating unit including, alternately stacked, a plurality of flat-plate high-voltage electrodes and low-voltage electrodes, wherein the multi-layer flat-plate ozone generating units are electrically divided into n groups within the discharge chamber, high-voltage electrode terminals of the multi-layer flat-plate ozone generating units within each group are connected together, and low-voltage electrode terminals of all multi-layer flat-plate ozone generating units are connected together;
• and
• an n-phase power supply supplying power to the plurality of multi-layer flat-ozone generating units, the n-phase power supply including
• a polyphase rectifier rectifying polyphase alternating current (AC) power received from a commercial power source to produce a rectified voltage,
• an n-phase inverter receiving the rectified voltage and producing n-phase AC power, in each of n phases, at a higher frequency than the AC power received from the commercial source,
• n serial reactors, one serial reactor being connected in series with each of the phases of the n-phase AC power, and
• an n-phase transformer receiving the n-phase AC power transmitted by the n serial reactors and increasing the voltage of the n-phase AC power to produce n-phase high voltage AC power, each phase of the n-phase transformer being connected to a respective high-voltage electrode terminal of a corresponding group of the multi-layer flat-plate ozone generating units, wherein the n-phase transformer includes
• a central polygonal core having a polygonal cross-section with at least n sides,
• a plurality of U-shaped or L-shaped cores, each core being attached to a respective side of the polygonal central core, and
• a respective transformer coil or reactor coil wound around each corresponding U-shaped or L-shaped core, with the coils electrically interconnected in a delta or star arrangement.