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Circuit Compensation Network of Efficiency-Based Non-contact Powered Ultrasonic Vibration System

A non-contact power supply, ultrasonic vibration technology, applied in circuit devices, electrical components, etc., can solve problems such as reducing system power factor and transmission efficiency, increasing self-loss, limiting power transmission capacity, etc.

Active Publication Date: 2018-07-27
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Leakage flux prevents the energy emitted by the primary coil from being completely absorbed by the secondary coil, and some of it is stored inside the coupler, which not only limits its power transmission capability, but also increases its own loss
The load of the rotating electromagnetic coupler is the ultrasonic vibration system (transducer, horn and tool). The ultrasonic vibration system needs to work at its resonant frequency to obtain the maximum conversion efficiency and amplitude. The transducer performs at its resonant frequency. It is a capacitive element rather than a pure resistive one, which will inevitably consume a large amount of reactive power, reducing the system power factor and transmission efficiency

Method used

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  • Circuit Compensation Network of Efficiency-Based Non-contact Powered Ultrasonic Vibration System
  • Circuit Compensation Network of Efficiency-Based Non-contact Powered Ultrasonic Vibration System
  • Circuit Compensation Network of Efficiency-Based Non-contact Powered Ultrasonic Vibration System

Examples

Experimental program
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Effect test

Embodiment

[0097] Below to Figure 7 The U-shaped concentric magnetic core cylindrical induction electromagnetic coupler shown is taken as an example to illustrate the specific method of compensation components and coil optimization. The non-contact electromagnetic coupler is made of manganese-zinc ferrite PC40 material. The size parameters are shown in Table 1. The transducer used The electrical parameters of the device are listed in Table 2. The relationship between the self-inductance of the coupler coil and the AC resistance and the number of turns of the coil measured in the experiment is shown in Figure 8-10 , the coupling coefficient k between the coils is shown in Table 3.

[0098] Table 1 Dimensional parameters of U-type concentric magnetic core cylindrical induction electromagnetic coupler (mm)

[0099] d1

d2

d3

d4

H

a

b

g

65

82

84

101

25

18

4

1

[0100] Table 2 Electrical parameters of ultrasonic vibrator

[010...

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Abstract

The invention discloses a circuit compensation network for a non-contact power supply ultrasonic vibration system seeking to achieve maximum transmission efficiency, including a primary side compensation network and a secondary side compensation network, and the primary side compensation network is connected to an ultrasonic power supply and a non-contact electromagnetic coupler Between the primary side coils, it is used to compensate the reactive power of the system, so that the output voltage and current of the power supply are in the same phase. The secondary side compensation network is connected between the non-contact electromagnetic coupler secondary side coil and the ultrasonic vibrator. parameters to achieve energy transmission with the highest efficiency, and the compensation components are inductors and / or capacitors. The invention can be applied to occasions such as rotary ultrasonic processing, ultrasonic welding and the like where a non-contact electromagnetic coupler is required to supply power to ultrasonic vibrators, and realizes energy transmission with the highest efficiency by optimizing compensation element parameters.

Description

technical field [0001] The invention relates to a technology of using a non-contact rotating electromagnetic coupler to supply power to an ultrasonic transducer, in particular to a circuit compensation method for realizing the maximum transmission efficiency of the non-contact energy transmission system. Background technique [0002] Rotary ultrasonic machining uses consolidated diamond tools (electroplated or sintered diamond tools) for ultrasonic vibration and high-speed rotation at the same time. Widely used in the processing of hard and brittle materials such as engineering ceramics, composite materials, titanium alloys, etc., rotary ultrasonic machining can effectively improve material removal rate, improve workpiece surface quality and prolong tool life. Traditional rotary ultrasonic machine tools mostly use the power supply method of brush slip ring. This contact power supply method is prone to sparks and wear, and cannot be used in inflammable and explosive harsh en...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J50/15H02J50/12
Inventor 林彬朱学明刘礼平
Owner TIANJIN UNIV
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