- 作者: CHIA-NAN CHANG, HUI-KANG TENG, JUN-YUAN CHEN, AND HUANG-JEN CHIU
- 中文摘要: A novel computerized system for obtaining the conducted EMI measurement and systematic filter design of a switched-mode power supply has been developed. The measurement, control and filter design of the conducted EMI noises of the tested device were obtained and integrated using an automatic data acquisition system and a comprehensive virtual instrument, which was developed using the LabVIEW application software program. As an application of this system, conducted EMI noise measurement and filter design of a boost ac-dc converter with PFC (94 kHz, 100 W, 200 V) has been achieved while successfully satisfying the FCC Class A limit in the frequency range from 450 kHz to 30 MHz, which confirms the validity of the developed computerized system. This computerized system has the advantages of providing accurate measurement of different conducted EMI noises and fast determination of the associated filter corner frequencies and component values. Modification and enhancement of this computerized system are also easy due to the block diagram form of the source code in the virtual instrument.
- 英文摘要: --
- 中文關鍵字: conducted EMI, accurate measurement, systematic filter design, LabVIEW software, application
- 英文關鍵字: --