Designed and exploited anewgeneration of YVF315~630 series high voltage varible frequency speed regulation three phase asynchronous motor, with features of energy saving, low vibration, low noise, small shape, light weight, wide spectrum, high power density, energyconservation, environmental protection, etc. The variable frequency speed regulation system, basic data, highefficiency design, insulation structure design, forced ventilation, both insideand outside the wind road design and insulation cover design were introduced, finally compared with the product test data and target data, the analysis showed that the development and design of this series product had achieved the expected goal.