Suitable for MW class large and medium-sized electrolytic equipment can pass multi-pulse(Such as 24 pulse wave, 48 pulse wave, 60 pulse wave, 96 pulse wave, etc) Achieve low harmonics; The power factor is guaranteed by on-load regulator switch and precise thyristor trigger Angle control; Through the full digital control tracking technology to meet the characteristics of photovoltaic power supply, wind power supply. The power supply scheme for large-scale electrolytic equipment has the advantages of high reliability, high efficiency, low investment, small footprint, small maintenance, etc. It is the widely used large-scale electrolytic water hydrogen power supply scheme at present.