| 基于74HC4046AD的感应加热电源设计 |
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| 引用本文： | 姜翔文,马俊清,徐秀平.基于74HC4046AD的感应加热电源设计[J].通信电源技术,2012,29(3):28-30,41. |
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| 作者姓名： | 姜翔文 马俊清 徐秀平 |
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| 作者单位： | 1. 五邑大学信息工程学院,广东江门,529000
2. 华南理工大学电信学院,广东广州,510640 |
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| 摘 要： | 针对感应加热过程中,铁质负载的电阻率和磁导率会发生变化,使谐振频率发生变化的情况,文中介绍了一种锁相驱动方案。该方案可以实现负载频率自动跟踪,它的电路包括锁相环电路、同步信号提取电路和隔离驱动电路三部分。其中锁相电路实现负载频率的跟踪,同步信号提取电路和隔离驱动电路实现IGBT驱动。设计并制作一台2.5 kW/20 kHz感应加热电源样机,通过给注塑机炮筒加热,实验数据表明锁相驱动方案锁相稳定。
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| 关 键 词： | 感应加热电源 74HC4046AD SG3525 锁相环 |
Design of Induction Heating Power Supply Based on 74HCA046AD |
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| JIANG Xiang-wen,MA Jun-qing,XU Xiu-ping.Design of Induction Heating Power Supply Based on 74HCA046AD[J].Telecom Power Technologies,2012,29(3):28-30,41. |
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| Authors: | JIANG Xiang-wen MA Jun-qing XU Xiu-ping |
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| Affiliation: | 1(1.Wu Yi University,Jiangmen 529000,China;2.South China University of Technology,Guangzhou 510640,China) |
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| Abstract: | According to the change of resistivity and magnetic permeability of iron load which will influence the resonant frequency in the process of induction heating,this paper introduces a plan of phase lock and drive.The plan consists of three parts which include phase lock loop,synchronous signal extraction circuit and isolat drive circuit.The phase lock circuit operates as tracking frequency of load.The synchronous signal extraction and isolated drive circuit perform to drive IGBT.This plan can realize automatic frequency tracking.A prototype of 2.5 kW/20 kHz was designed and made.The experiment data show that this plan has stability of phase lock by heating charge stock of the injection molding machine. |
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| Keywords: | induction heating 74HCA046AD SG3525 phase lock loop |
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