Open AccessDual Pulse Width Modulation Harmonic Suppression Technology of H-bridge DC Converter
Author(s) -
Jun Zhu,
Jie Zhao,
Mengjie Zhang
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1549/5/052104
Subject(s) - pulse width modulation , harmonics , duty cycle , harmonic , emi , modulation (music) , pulse frequency modulation , physics , electronic engineering , electrical engineering , pulse (music) , electromagnetic interference , harmonic spectrum , engineering , voltage , acoustics , pulse amplitude modulation
In order to solve the H-bridge DC converter under the traditional pulse width modulation the peak value of EMI is mainly distributed at the switching multiple frequency, and the serious electromagnetic interference. This paper introduces dual pulse width modulation harmonic suppression technology based on the H-bridge DC converter. By expanding the spectral distribution of the harmonics by two pulse widths, the duty cycle and phase of the two pulse widths can be changed to reduce the power of a certain harmonic, and compared with the traditional single pulse width, the analysis of the two pulse width modulation Spectrum distribution on the grid side. The electromagnetic interference under two kinds of pulse width modulation is realized by analyzing through matlab / Simulink software simulation.