1results about How to "Less power conversion stages" patented technology

This invention discloses a quasi-single-stage three-phase pulse power supply and its control method. The quasi-single-stage three-phase pulse power supply includes a three-phase T-type three-level rectifier and a synchronous rectifier converter. By injecting a zero-sequence component into the three-phase modulation wave, the power transferred from the T-type three-level rectifier to the low-voltage port is adjusted. Part of the energy is directly transferred to the load by the T-type three-level rectifier, achieving maximum power single-stage transmission and improving energy transmission efficiency. Furthermore, the wide-range fluctuation of the capacitors at the high-voltage and low-voltage output terminals of the T-type three-level rectifier compensates for the instantaneous power difference between input and output, suppressing the impact of pulse power on the AC power grid. Simultaneously, the synchronous rectifier converter compensates for voltage fluctuations at the low-voltage output terminal capacitor, providing a stable voltage to the pulse load. This invention achieves input-output power decoupling, suppresses the impact of pulse loads on the AC power grid, and improves energy transmission efficiency by maximizing power single-stage transmission, making it suitable for applications with pulse loads.