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Ultrasonic power source for transducer cascading

A transducer and ultrasonic technology, applied in the direction of impedance matching network, multi-terminal pair network, etc., can solve problems such as power supply capacity limitation

Active Publication Date: 2014-08-06
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this working mode, a single inverter power supply can only be operated with one transducer, so that the capacity of the power supply is limited by the power of the transducer

Method used

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  • Ultrasonic power source for transducer cascading
  • Ultrasonic power source for transducer cascading
  • Ultrasonic power source for transducer cascading

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Embodiment Construction

[0022] The implementation of the present invention will be further described below in conjunction with the accompanying drawings, but the implementation and protection of the present invention are not limited thereto.

[0023] Such as figure 1 As shown, an ultrasonic power supply for transducer cascading, including a rectifier bridge, a filter circuit, a DC chopper circuit, a full-bridge inverter circuit, a first impedance stepless matching network TL1, a second impedance stepless matching network TL2, first transducer tran1, second transducer tran2, matching network control circuit, voltage and current sampling circuit, frequency tracking circuit, power constant circuit.

[0024] The connection diagram of the cascaded transducer is shown in figure 2 As shown, the first impedance stepless matching network TL1 is composed of a first thyristor THY1, a second thyristor THY2, a first inductor L1, and a second inductor L2. The second stepless impedance matching network TL2 is co...

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Abstract

The invention relates to an ultrasonic power source for transducer cascading. The ultrasonic power source comprises a rectifier bridge, a filter circuit, a direct-current chopper circuit, a full-bridge inverter circuit, a first impedance stepless matching network, a second impedance stepless matching network, a first transducer, a second transducer, a matching network control circuit, a voltage current sampling circuit, a frequency tracking circuit, and a constant power circuit. The matching network control circuit controls magnitude of matching inductors of the first and second impedance stepless matching networks, accessing an inverter output circuit. Output voltage and current of the full-bridge inverter circuit are connected to the frequency tracking circuit and the constant power circuit through the sampling circuit; the frequency tracking circuit controls full-bridge inversion frequency; the constant power circuit controls magnitude of the output voltage of the direct-current chopper circuit. The ultrasonic power source has the advantages that coaction of the first and second matching network control circuits ensures normal operation of transducer cascading and the traditional single-inverter single-transducer operating mode is changed.

Description

technical field [0001] The invention relates to the technical field of ultrasonic power supplies, in particular to an ultrasonic power supply for cascading transducers. Background technique [0002] The ultrasonic power supply is usually called the ultrasonic generating source, and its function is to convert electrical energy into a high-frequency alternating current signal that matches the ultrasonic transducer. The load of the ultrasonic power supply is the ultrasonic transducer, and the ultrasonic transducer has static capacitance. Therefore, when the ultrasonic transducer is used, it must have a corresponding inductive matching network to cooperate with the work of the ultrasonic transducer. [0003] At present, the matching network used by the commonly used ultrasonic power supply is a single inductor or a T-shaped matching inductor. By changing the output frequency of the inverter, the effect of tracking the resonant frequency of the transducer is achieved. In this wo...

Claims

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Application Information

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IPC IPC(8): H03H11/28
Inventor 杜贵平罗杰方俊翔
Owner SOUTH CHINA UNIV OF TECH
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