| 继电保护测试仪用高电压功率放大电路的研制 |
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| 引用本文： | 李付亮,吴涛,周有庆. 继电保护测试仪用高电压功率放大电路的研制[J]. 电力系统保护与控制, 2009, 37(11): 78-81 |
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| 作者姓名： | 李付亮 吴涛 周有庆 |
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| 作者单位： | 1.湖南水利水电职业技术学院，湖南 长沙 410131；2.湖南大学电气与信息工程学院，湖南 长沙410082 |
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| 摘 要： | 针对继电保护测试仪的电压功率放大采用集成功率放大芯片价格昂贵，且易损坏，提出了一种性价比高、输出功率大的电压功率放大电路设计方案。首先介绍了继电保护测试仪的硬件结构，并详细分析了电压功率放大电路的原理，计算了功率管的管耗，在此基础上对电路进行了仿真分析，最后对实际电路进行了试验，结果表明，电路可输出功率大、线性度好，可以满足测试仪对电压功率放大的技术要求，并且具有很广的应用前景。
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| 关 键 词： | 电压功率放大电路；功率MOSFET管；继电保护测试仪 |
Design of high-voltage power amplifying circuit in protective relay test device |
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| LI Fu-liang,,WU Tao,ZHOU You-qing. Design of high-voltage power amplifying circuit in protective relay test device[J]. Power System Protection and Control, 2009, 37(11): 78-81 |
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| Authors: | LI Fu-liang WU Tao ZHOU You-qing |
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| Affiliation: | 1.Hunan Water Conservancy and Hydropower Vocational & Technical College;Changsha 410131;China;2.Department of Electrical & Information Engineering;Hunan University;Changsha 410082;China |
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| Abstract: | Considering voltage power amplifier used in protective relay test device with an integrated power amplifier chip is expensive and easily damaged,this paper proposes a design of voltage power amplifier with cost-effective and high output power.Hardware structure of protective relay test device is introduced and the voltage power amplifier circuit theory is analyzed in detail,then,the power consumption of amplifier tube is calculated.On the basis of above,the simulation analysis of the circuit is made.Finally... |
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| Keywords: | voltage power amplifying circuit power MOSFET protective relay test device |
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