Single-phase motor VVVF technology overview

Single-phase motor VVVF technology overview
Frequency conversion technology in the asynchronous induction motor speed control drill edm system, with its excellent speed and start-up performance, high power factor, and energy-saving effect, and was recognized as the governor of the most promising means.
Only two sets of winding single-phase AC induction motor, simple structure, low production costs, easydrill edm maintenance, small power motor applications, such as refrigerators, washing machines, electric fans, air conditioners and other household appliances, auto accessories, and other fields dominate .
1) single-phase motor winding is different from the three-phase motor, its primary and secondary windings drill edm asymmetric winding, the secondary winding series run capacitor usually brought new problems to the synthetic circular rotating magnetic field;
2) single-phase motor with the VVVF inverter main circuit structure also drill edm has its own unique side, there is the problem of how to obtain a reasonable and efficient inverter circuit;
3) for the single-phase motor speed regulation, there is what kind of control technology in order to makedrill edm a single-phase motor with three-phase motor, even with DC motor as excellent governor effect.