摘要
针对有源电力滤波器(APF)主电路中的IGBT及其驱动器容易引发开路故障,以及如何利用虚拟仪器技术取代传统的电能质量分析装置对APF进行实时监测等问题,通过对APF中IGBT的开路故障进行分析,设计了其相应的故障诊断硬件电路,同时设计了监控系统中的电网电流信号、APF运行温度采样信号的硬件电路,并分析说明了电路工作原理。设计了一种基于Lab VIEW软件的实时监测系统,通过将采样数据发送到该监测系统,实现了利用上位机对APF运行的实时监测功能。最后进行了对电网电压、谐波电流等信号的实时采样,以及对IGBT开路故障的模拟测试。实验及研究结果表明,该系统能够实现对APF的运行状态进行实时监测,同时能够实现IGBT及其驱动器的故障诊断功能,系统故障诊断精确性高、响应迅速。
Aiming at the problems that IGBT and its driver in the main circuit of the active power filter（APF）is easy to cause opencircuit fault,and how to use the virtual instrument technology to replace the traditional power quality analysis device for real- time monitoring on APF,through the analysis of the open-circuit fault of IGBT in APF,the hardware circuit on fault diagnosis was designed accordingly. At the same time,the hardware circuit monitoring the sampling signal of grid current and APF operating temperature was designed. The operatinging principle of circuit was analysised and defined. The real-time monitoring system based on Lab VIEW was designed,the sampling data was sent to the monitoring system,and the real- time monitoring function of APF operation using hostcomputer was achieved. Finally,the real-time sampling of the grid voltage and harmonic current signal,and the simulated test of opencircuit fault in IGBT were proceeded. The results indicate that the system can realize the real-time monitoring of the running state of APF,and can achieve the fault diagnosis function of IGBT and its driver,which has high accuracy and quick response.
出处
《机电工程》
CAS
2015年第4期553-556,共4页
Journal of Mechanical & Electrical Engineering
基金
上海张江国家自主创新试范区专项发展资金重点项目(201310-PI-B2-008)
