Differential-mode Modeling of Common Mode Chokes for EMI filter in Switching Power Supply

2018 ◽  
Author(s):  
Na Wang ◽  
Zhaowen Yan ◽  
Jun Tang ◽  
Biao Xiao ◽  
Jifang Lyu ◽  
...  
Keyword(s):  
Power Supply ◽  
Switching Power Supply ◽  
Differential Mode ◽  
Common Mode ◽  
Switching Power ◽  
Emi Filter

Application of EMI Filter in Design of Switching Power Supply

2013 ◽  
Vol 385-386 ◽  
pp. 1305-1308
Author(s):  
Pan Feng Guo ◽  
Jian Song ◽  
Hong Zhang ◽  
Xin Li ◽  
Rui Lu
Keyword(s):  
Power Supply ◽  
High Reliability ◽  
Power Converter ◽  
Experimental Results ◽  
Electronic Systems ◽  
Power Electronic ◽  
Switching Power Supply ◽  
Switching Power ◽  
Output Waveform ◽  
Emi Filter

Because of its high reliability and stable output, switching power supply is widely used in power electronic systems, but it is can not be ignored that its self-generated electromagnetic has a profound effect on the whole system. In order to suppress conducted interference generated by switching power supply, this article proposed a cascaded technology about the integrated EMI filter, and a simulation is carried out for the power converter output waveform. Experimental results show that this cascaded technology about the integrated EMI filter has a good inhibition on the harmonic.

Filter Technology in the Switching Power Supply

2013 ◽  
Vol 787 ◽  
pp. 726-730 ◽  
Author(s):  
Zhi Hong Zhang ◽  
Bao Feng Zhang ◽  
Guang Quan Li
Keyword(s):  
Power Supply ◽  
Noise Pollution ◽  
Switching Frequency ◽  
Switching Power Supply ◽  
Switching Power ◽  
Three Phase ◽  
Wide Range ◽  
Switch Power Supply ◽  
Switch Power ◽  
Emi Filter

With the increase of switching frequency of power switch, EMI noise pollution becomes more and more serious. In order to solve this problem, in this paper, the switch power supply filter and passive EMI filter, active EMI filter is studied. It mainly research active EMI filter with feed forward , non-inductive current detection device of active EMI filter and active EMI filter for three-phase inverter motor. To solve this problem which is that EMI noise pollution has become more serious along with the increase of switching frequency switch power supply, the increasingly serious pollution make the EMI filter technology have a wide range of applications and put forward higher request to filter technology

The Filter Technology of Switching Power Supply

2011 ◽  
Vol 204-210 ◽  
pp. 482-485
Author(s):  
Hong He ◽  
Shuai Bao ◽  
Hang Li ◽  
Da Jian Zhang ◽  
Ming Feng Hou
Keyword(s):  
Power Supply ◽  
Noise Pollution ◽  
Switching Power Supply ◽  
Widespread Application ◽  
Phase Inverter ◽  
Switching Power ◽  
Three Phase ◽  
Emi Filter ◽  
Current Detection ◽  
Three Phase Inverter

The basic principle of switching power supply EMI filter was described. The circuit principle of passive EMI filter and several topology circuit of active EMI filter were introduced. Active EMI filter with feedforward, active EMI filter without current detection sensors installed and active EMI filter for three-phase inverter motor were researched. The problem that following the frequency rising of switching power supply, the EMI noise pollution was becoming more and more serious than before was solved. These growing pollutions had resulted in widespread application of EMI filter technology and in the meantime higher requirements were raised to EMI filter technology.

The Design of 5V/100W High Frequency Switching Power Supply

2013 ◽  
Vol 834-836 ◽  
pp. 1221-1224
Author(s):  
Hong Zhuan Cai ◽  
Li Bai
Keyword(s):  
Power Supply ◽  
High Frequency ◽  
High Efficiency ◽  
Design Method ◽  
Switching Power Supply ◽  
Widespread Application ◽  
Forward Converter ◽  
Switching Power ◽  
Dc Power ◽  
Important Field

Switching power supply is an important field of application of power electronic technology, the high frequency switching DC power supply with high efficiency, small size, light weight and other advantages obtain the widespread application. The application of synchronous rectifier technology, photoelectric coupling isolation technology and the active clamp forward converter design high frequency switching power supply with 16~40V DC input and 5V/100W DC output . its operational principle is analyzed, and using LM5026 control chip describes design method of switching power supply.

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