Design and Research of Intelligent Power Supply for Ozonizer Based on MCU

Ozone is widely used in industry or even home nowadays, the power supply with frequency and duty cycle easy-adjust feature is very important to ozone production. An intelligent power supply based on MCU system is introduced in this paper, Intelligent Power Module (IPM) is used to compose a full bridge inverter circuit, and PWM technology is used to drive the IGBTs integrated in the IPM. The frequency and duty of the output AC can be adjusted manually or by auto tracking, and can be displayed synchronously on the LCD. The result shows that the power supply can adjust and display the output frequency and duty cycle by keyboard manually or by auto tracking based on detected current, and ozonizer have a higher efficiency with adjustable output frequency and duty cycle.