【摘要】 由于中频电源内部及其周围存在大量谐波和电磁干扰,常使其无法正常工作。首先介绍了中频电源的应用及存在的问题;然后为了提高中频电源中微处理器的抗干扰能力,分别从干扰源的抑制、干扰源的隔离、干扰的削减以及自身抗干扰能力的提高4个方面进行抗干扰设计;最后采用MATLAB仿真软件建立了12脉波整流器的仿真模型,通过在电源侧是否加入RLC串联滤波器进行仿真分析,以此来验证该滤波器的设计是否具有合理性。仿真结果表明,在电源侧加入RLC串联滤波器可以有效抑制谐波。更多还原

【Abstract】 Since the surrounding of medium-frequency power supply exist a large number of harmonics and the electromagnetic interference,it unable to work normally.Firstly,This paper introduces the application and problems of the medium-frequency power supply.In order to improve the anti-interference ability of the microprocessor in the medium-frequency power supply application system,the article designed anti-interference measures from four aspects of inhibition of interference sources,interference sources of segregation,interference reduction and the improvement of its anti-interference ability.Last,using MATLAB simulation software to establish the simulation model of the 12-phase rectifier to verify whether the design of the filter has the rationality through simulation analysis was made on whether to place the RLC series filter in the side of power supply.The simulation results show that placing the RLC series filter in the side of power supplyt can effectively restrain harmonics.更多还原