Demonstration model: Huawei MateBook X system version: win 10 sinee brand is sinusoidal frequency converter. Sine frequency converter is a product of Shenzhen Sine Electric Co., Ltd., which is identified as SINEE and covers the field of machinery industry. Frequency converter is a kind of power control equipment which uses frequency conversion technology and microelectronics technology to control AC motor by changing the frequency mode of motor working power supply. The frequency converter is mainly composed of rectifier (AC to DC), filter, inverter (DC to AC), braking unit, driving unit, detection unit and microprocessor unit.