一个二级快速放电电路,用于短暂的电磁发射器
Chao Tan1, Shibin Yuan1, Linshan Yu1
1College of Electrical and New Energy, China Three Gorges University, Yichang 443002, China.
Sensors (Basel, Switzerland)
|April 12, 2025
概括
一个新的电路设计大大减少了短暂电磁 (TEM) 发射器的关机时间. 这项创新确保了快速,负载独立的放电,提高了发射器的性能和效率.
科学领域:
- 电气工程 电气工程
- 电磁学 电磁学 电磁学 电磁学
- 电力电子 电力电子 电力电子
背景情况:
- 过渡性电磁 (TEM) 发射器经常面临长时间关机的挑战,特别是在感应负荷下.
- 这种限制可能会影响TEM系统的效率和性能.
研究的目的:
- 引入和分析TEM发射器的新型二级快速放电电路拓.
- 解决和减轻TEM发射器中长时间关机时间的问题.
主要方法:
- 在标准的H桥结构中集成了一个新的二级电路拓,包括一个电容器,两个金属氧化物半导体场效应晶体管 (MOSFET) 和两个电阻.
- 分析了四个阶段的操作原理,并开发了关机时间和MOSFET电压应力的数学模型.
- 电阻器和电容器的参数被优化为一个固定的发射器线圈.
主要成果:
- 拟议的拓证明了电流独立的关机时间,在50A时实现了与其他拓相比最短的持续时间.
- 在9A时观察到MOSFET的低电压应力.
- 实验结果证实,在各种电流负载 (1A,5A,9A) 中,一致的关机时间约为64μs.
- RLC系列共振进一步将关机时间缩短到58μs,保持负载电流独立性.
结论:
- 这种新型的二级快速放电电路有效地减少了TEM发射器中MOSFET关机时间.
- 电路的性能特点是负载电流独立的关机持续时间和降低的电压压力.
- 这一进步为TEM发射器的设计和应用提供了显著的改进.
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