摘要
针对电力通信设备中高频开关电源转换器在开关频率和谐振频率下产生电磁干扰的问题,通过建立并行扩频解调后信号的数学模型对断续电流模式的变流器进行电磁干扰抑制,降低电力通信电源的电磁干扰,提高电力通信系统抗电磁干扰能力。仿真实验表明:随着扩频倍数的增大,直流电源开关调频中的谐波干扰频幅得到有效降低。
The power communication equipment is often affected by the electromagnetic interference caused by the switching frequency and resonant frequency in the high-frequency switching power converter. In order to effectively improve the ability of anti-electromagnetic interference for the power communication system,this paper establishes a mathematical model.Simulation results show that the harmonic interference in the direct current switch power is effectively reduced with increase of the spreading factor.
出处
《电网与清洁能源》
2014年第5期22-25,30,共5页
Power System and Clean Energy
基金
国家自然科学基金(61306093)~~
关键词
电力通信电源
电磁干扰
并行扩频
干扰抑制
power supply for communication
electromagnetic interference
parallel spread-spectrum
interference suppression
