1000W 28khz 40khz 20khz 超聲波箱式發生器 數位超聲波發生器

The power supply of high-power industrial ultrasonic cleaning generator has analyzed and designed the hardware circuit, signal source circuit, PWM drive circuit, acceleration circuit, inverter circuit, boost circuit, current sampling circuit, and software program part used in the system. To address the drift of resonance points when multiple transducers are connected in parallel, impedance analysis has been conducted on the equivalent model of ultrasonic transducers, The parallel resonance frequency of six 50W ultrasonic transducers is determined to be 216KHz. Finally, after software system simulation test, the PCB board is designed, welded and debugged according to the wiring rules of the PCB board diagram. After testing, the output signal frequency of the signal source circuit is 216KHz, the Dead time is greater than 58ns, the duty cycle is the same, and the phase is complementary; The peak voltage at both ends of the ultrasonic transducer is 245V, and the “sizzling” sound during normal operation of the transducer can be clearly heard