Connecting a three-phase motor to a single-phase network

The problem of connecting a three-phase motor to a single-phase network is known to many, especially for people living outside the city. Popular applications are household circular saw, compressor, concrete mixer and other mechanisms A well-known solution is to connect capacitors to one of the motor phases to provide a phase shift< br />                                                                          

But the disadvantages of this method are also obvious. Firstly, the power consumption from the network after such an application increases, the engine efficiency decreases Secondly, the starting torque is reduced, which requires starting with a minimum load on the shaft (especially for circular saws, it is required to raise the engine for start it at idle) Thirdly, the rotating field inside the engine is not circular, but pulsating. This is clearly visible when the incandescent lamp is turned on while the engine is running in this way. The lamp burns with a certain frequency, either brighter or dimmer. This is the effect of charge-discharge capacitors , this circuit introduces a change in voltage to your network, from which other household appliances are powered, which is fraught with failure (this is especially a threat to energy-saving lamps, refrigerators and other equipment) And finally, & nbsp; the implementation of such a scheme also requires certain investments. But capacitors will not only provide engine starting, but will not provide control over the engine

But We can offer you a solution to this problem  This is a frequency converter with 1ph 220V input and 3ph 220V output (When connecting the engine, if it is connected to a star at 380V, then it must be switched to work at 220V to a triangle) Why is this solution good? Firstly, you have the opportunity to regulate the speed of rotation of the motor Secondly, you provide a smooth start and stop of your mechanism, which reduces its wear and mechanical overload Also, the frequency converter provides full control of the motor and its comprehensive protection against overload, jamming, drawdown or voltage boost, thermal protection, etc. Gives you the ability to quickly reverse There are many more functions that will suit a particular application Finally, this is energy saving Optimal power consumption depends on the correct settings of the frequency convertercomua/manuals">Documentation

If you have questions about technical support or purchase of frequency converters, you can ask them in any of the suggested ways in the section Contacts