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电气强度试验是电器产品安全性能检验的一项重要指标。文章根据GB4706.1推荐的90°移相法,研究了一种智能型热态电气强度试验仪,详细介绍了该试验仪的系统设计方案,包括智能控制模块、AC/AC变换模块、AD采样以及通信模块等,分析了仪器试验高压的电压外环、电流内环的双闭环控制策略,最后通过实验验证了该方法的可行性和有效性。
Electrical strength test is an important indicator of electrical product safety testing. According to the 90 ° phase shift method recommended by GB4706.1, this paper studies a kind of intelligent thermal electrical strength tester, and introduces the system design scheme of the tester in detail. The system includes intelligent control module, AC / AC converter module, AD sampling As well as the communication module. The double closed-loop control strategy of high-voltage voltage outer loop and current inner loop is analyzed. Finally, the feasibility and effectiveness of this method are verified by experiments.