Patent ID: 11894782
Assignee: SANTAK ELECTRONIC (SHENZHEN) CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 7:
8. The PWM method according to claim 1, wherein each phase of the CHB converter is provided with n+m CHB rectifier circuits, the n CHB rectifier circuits are used for rectification, and the m CHB rectifier circuits are used as redundancy levels, where m is greater than 1; and, n+m carrier signals having successively decreasing levels and equal amplitudes are generated for each phase, wherein the n carrier signals with the highest levels correspond to the n CHB rectifier circuits respectively, and the levels of the n+m carrier signals are cascaded to fill the voltage amplitude throughout the cycle of the reference waveform.