基于测量模型的传导骚扰超标问题分析和改进

Analyzing and Improving of the Conduction Harassment Overproof Problem Based on the Measurement Model

电源系统由于其输出功率大,又工作在开关状态,EMI问题一直是一个难以解决的问题,特别是近期许多电源系统集成了风能或太阳能变换功能,更是加大了问题解决的难度。该文在解决一款混合能源系统的传导骚扰超标问题时,基于传导骚扰的测量模型,通过对传导骚扰的试验数据分析、建模研究,开发了一块交流滤波板,在500K以上频段降低噪声限值降低达24d Bμ,产品得以顺利通过传导骚扰CLASS A测试。

The power system EMI problem has always been a difficult problem because of its large outputpower and working in the switch state.In particular,recently power system integrates wind or solar powerconvertor,so increase the difficulty of problem solving.In the paper,while solving the problem of excessconduction harassment of a power supply system,based on the measurement model of conduction harassment,by conduction harassment of a hybrid energy system test data analysis,modeling research,we developeda AC filter board to reduce conduction harassment limit amounted to 24 dBμ above 500kHz,The EUTpass the conduction harassment CLASS A test.