Full-bridge high-power ultrasonic generator based on phase shift

Abstract

The invention discloses a full-bridge high-power ultrasonic generator based on phase shift. The full-bridge high-power ultrasonic generator comprises a weak electricity circuit module, an MCU (microprogrammable control unit) module, an isolation driving circuit, a rectifying and filtering circuit, a full-bridge inverter module, an isolation transformer, an LC (inductance and capacitance) filtering matching circuit, an output voltage and current detection circuit, a temperature detection circuit, a bridge current detection and overcurrent protection circuit, an output current and voltage effective value measuring circuit, an output current and voltage phase detection circuit, an output overvoltage and overcurrent protection circuit, a display module, a storage module and a control module. The full-bridge high-power ultrasonic generator has the advantages that the design is skillful and reasonable, the size is small, the radiation is small, the performance is stable, the protection function is complete, the sweep frequency range and sweep frequency voltage self-setting function is realized, the resonance frequency of a transducer can be accurately found, the frequency tracking function is stable, and the output voltage, current, load and impedance information and the like can be monitored in real time during processing; the operation is convenient and simple, the power is high, and the full-bridge high-power ultrasonic generator is suitable for being widely popularized and applied.

Description

technical field [0001] The invention belongs to the technical field of ultrasonic generators, and in particular relates to a high-power ultrasonic generator based on a phase shifting full bridge. Background technique [0002] At present, ultrasonic technology is widely used, and ultrasonic equipment is applied to various fields such as machinery, electronics, chemical industry, energy, and medical treatment. In practical applications, most of the equipment needs to be monitored in real time, such as ultrasonic cleaning machines, ultrasonic welding machines, ultrasonic medical equipment, etc. Ultrasonic equipment includes transducers, ultrasonic generators and other auxiliary equipment. The ultrasonic generator provides the working energy for the transducer to convert electrical energy into sound energy. The working efficiency of the ultrasonic generator directly affects the working condition of the transducer. [0003] Existing ultrasonic generator, the mode that generall...

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Problems solved by technology

[0003] Existing ultrasonic generator, the mode that generally adopts has: 1, be made up of self-excited oscillation circuit, there is output power to be limited, and can not the deficiencies such as automatic frequency tracking; 2, adopt high-frequency inverter unit, impedance matching system and transformer Coupled output composition, due to the limitation of transformer frequency characteristics, there are shortcomings such as limited output power

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