Stepless speed regulator based on differential transmission/power converging mechanism, and energy-saving system thereof

The invention discloses a stepless speed regulator based on a differential transmission/power converging mechanism, and an energy-saving system thereof. The stepless speed regulator based on the differential transmission/power converging mechanism is mainly composed of a differential transmission/power converging mechanism assembly, a power regulation/speed regulation motor, a motor control driverand a speed regulator accessory, wherein the differential transmission/power converging mechanism assembly comprises a planet gear carrier, a planet gear, a planet gear shaft, a left half shaft gearand a right half shaft gear, and the planet gear is mutually meshed with at least one pair of left half shaft gear and right half shaft gear separately; and the left half shaft, the right half shaft and the planet gear carrier are used as a power output end/shaft, a power regulation end/shaft and a power input end/shaft of the stepless speed regulator separately. The stepless speed regulator basedon the differential transm