The frequency conversion motor adopts the "special frequency conversion induction motor + frequency converter" ac speed regulation mode, which is leading a revolution to replace the traditional speed regulation mode in the field of speed regulation with its excellent performance and economy. The good news that it brings to all walks of life lies in: make mechanical automation degree and production efficiency greatly improve, save energy, improve product qualification rate and product quality, power system capacity corresponding increase, equipment miniaturization, increase comfort, is replacing the traditional mechanical speed regulation and dc speed regulation scheme with a very fast speed. Let's learn about the advantages of frequency conversion motor insulation system.
For frequency conversion motor, the input voltage and current are no longer sinusoidal wave with constant frequency, but are supplied by non-sinusoidal wave. In addition to the basic wave voltage, there will be many harmonic components, and there will be side frequency components. The main insulation between turns and the main insulation between turns are frequently affected by the impact voltage, and the main insulation and the inter-turn insulation of the motor must be strengthened. Therefore, it is one of the keys to strengthen the insulation between stator turns.
Another key is to reduce the air gap inside the winding. Because the air gap can cause partial discharge, so that the electrical performance of the winding decline, reduce the winding life. Therefore, the key to the safe operation of frequency conversion motor lies in the selection of insulation material and the design of insulation structure, and the key to the selection of insulation material lies in the selection of winding wire and the selection of impregnating resin. The key of insulation structure design lies in the rationality of structure and the implementation of technology. The insulation system of frequency conversion motor is characterized by the two key points of electronic quantification between turns and internal air gap of windings. Reasonable implementation is the key point to improve the performance of frequency conversion motor.