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Frequency-variable power source for driving small or medium-sized magnetostrictive transducer

A variable frequency power supply and magnetostrictive technology, which are applied in electrical components, output power conversion devices, and AC power input to AC power output, etc., can solve the problems of small output frequency variation range, large volume of high-frequency power supply, and high cost. , to achieve a wide frequency adjustment range, improve work efficiency, and reduce reactive power loss.

Inactive Publication Date: 2014-05-28
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] 1. The output frequency of the existing inverter power supply is generally low; 2. The high-frequency power supply for industrial use is large in size and extremely expensive; 3. The output frequency range of the existing magnetostrictive transducer drive power supply is small and the versatility is poor

Method used

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  • Frequency-variable power source for driving small or medium-sized magnetostrictive transducer
  • Frequency-variable power source for driving small or medium-sized magnetostrictive transducer
  • Frequency-variable power source for driving small or medium-sized magnetostrictive transducer

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Embodiment Construction

[0028] The present invention is described below in conjunction with accompanying drawing, but they do not limit the present invention in any way.

[0029] The present invention is a variable frequency power supply for driving small and medium-sized magnetostrictive transducers. The overall structural block diagram of the power supply is shown in figure 1 As shown in the middle dotted line box, its composition includes single-phase AC input 1, rectification circuit 2, inverter circuit 3, matching circuit 4, feedback circuit 5, control panel 6, control circuit 7, isolation circuit 8 and drive circuit 9;

[0030] Its connection relationship is:

[0031] The single-phase AC input 1 of the power supply is connected to the rectification circuit 2 for rectification and filtering, the output of the rectification circuit 2 is connected to the full-bridge inverter circuit 3 for inversion to realize the frequency conversion of the power supply, and then the inverter circuit 3 is connecte...

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Abstract

The invention relates to a frequency-variable power source for driving a small or medium-sized magnetostrictive transducer. The frequency-variable power source comprises a single-phase alternating current (AC) input, a rectifying circuit, an inverter circuit, a matching circuit, a feedback circuit, a control panel, a control circuit, an isolating circuit and a driving circuit. The frequency-variable power source is used for driving the small or medium-sized magnetostrictive transducer which has the frequency range of ultrasonic frequency (20-30KHz), medium high frequency (1-20KHz) or lower frequency (500-1000Hz) and different power requirements (maximum output power is 2KW); the frequency can be set by keys arranged on the control panel; the control circuit can be used for rapidly locking the resonant frequency of the transducer when being assisted by the feedback circuit, so that the demand of sine wave current drive of the transducer can be met; and the frequency-variable power source has the advantage of being wide in frequency adjustment range.

Description

technical field [0001] The invention relates to a variable frequency power supply specially used for small and medium-sized magnetostrictive transducers, in particular to a control system for impedance matching and frequency dynamic adjustment and its realization method, specifically using uncontrolled rectification, capacitor filtering, full-bridge inverter and its The control driving circuit, the feedback circuit and the impedance matching part realize the variable frequency power supply for the magnetostrictive transducer. Background technique [0002] Magnetostrictive transducer is a mechanical device that uses new functional materials to convert electromagnetic energy into mechanical vibration. Efficiency is directly related to the performance of the drive power supply. Driving the magnetostrictive transducer with a sinusoidally changing magnetic field can significantly improve the efficiency of the transducer, which requires the drive power supply to output a sinusoid...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M5/458
Inventor 黄文美石春园王博文翁玲王志华孙英曹淑瑛
Owner HEBEI UNIV OF TECH
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