Simultaneous output of 220v and 380v inverter

In fact, the single-phase 220V to 3-phase 380V inverter, which is a normal 380V inverter, has been improved by the technician by adding a voltage doubler circuit before the input source. So when we supply 220V power, it will be doubled to 1 phase 380V – 400V.

A single-phase inverter is simply a device that uses a single-phase 220V input power source and converts it to a 3-phase 220V or 380V current. Currently, most inverters have a 3-phase 220V input, but even if you supply a single-phase 220V, the inverter will still work.

So when we supply 220V power, it will be doubled to 1 phase 380V – 400V. The most important component in the structure of the voltage doubling circuit to convert 220V to 380V is the capacitor and the diode. With capacitors, depending on the size, they will be mounted separately or inside the inverter.

For motors with large inertia such as centrifugal loads, lifting and lowering, when using a single-phase 220V inverter, three-phase 380V is used. It is necessary to learn about the inverter's discharger and discharge resistance to avoid overvoltage error when using it.

The next 3 V to 220 V inverter circuit is designed to work in a blocking oscillator mode having an operating frequency set at around 400 Hz. The transistor used can be any PNP power transistor. The center tap transformer can be any standard step down transformer. This transformer provides the feedback and the voltage boosting both together.

Currently, most inverters have a 3-phase 220V input, but even if you supply a single-phase 220V, the inverter will still work. In Vietnam, all inverters are single-phase 220V, but with some special countries like Japan.