| 三相IGBT全桥隔离驱动电源设计 |
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| 引用本文： | 马帅,赵仁德,许强. 三相IGBT全桥隔离驱动电源设计[J]. 现代电子技术, 2011, 34(14): 199-201,204 |
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| 作者姓名： | 马帅 赵仁德 许强 |
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| 作者单位： | 中国石油大学(华东)信息与控制学院,山东,东营,257061 |
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| 基金项目： | 中央高校基本科研业务费专项资金资助 |
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| 摘 要： | 设计了一种基于电流型PWM控制器UC3845的三相IGBT全桥隔离驱动电源。采用单端反激式结构，电压反馈与电流反馈组成双闭环串级结构。TL431a与PC817组成反馈网络，旁路掉UC3845内部误差放大器，反馈信号直接输入到内部误差放大器的输出端。提供4路相互隔离输出，每路均提供＋15V／-9V输出。该电源稳压效果好，负载调整率高，适合作为三相IGBT全桥隔离驱动电源。
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| 关 键 词： | UC3845 三相IGBT全桥 隔离电源 反馈网络 |
Design of Isolated Power Supply for Three-phase IGBT Full-bridge Driving Circuit |
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| MA Shuai,ZHAO Ren-de,XU Qiang. Design of Isolated Power Supply for Three-phase IGBT Full-bridge Driving Circuit[J]. Modern Electronic Technique, 2011, 34(14): 199-201,204 |
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| Authors: | MA Shuai ZHAO Ren-de XU Qiang |
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| Affiliation: | MA Shuai,ZHAO Ren-de,XU Qiang(College of Information and Control Engineering,China University of Petroleum,Dongying 257061,China) |
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| Abstract: | An isolated power supply based on UC3845 for three-phase IGBT full-bridge driving circuit is designed.The form of single-ended fly-back is used.Voltage and current feedback form the double-loop cascade structure.The TL431a and PC817 are combined to form a feedback network,bypass the internal error amplifier of UC3845.The feedback signal is directly input to the output terminal of the internal error amplifier.Providing a total of four isolated outputs,each of them consists of +15 V /-9 V outputs.This power s... |
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| Keywords: | UC3845 three-phase IGBT full-bridge isolated power supply feedback network |
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