Tiếng Việt
Today, there are many types of machines with 3-phase motors, so the demand for 1-phase 3-phase inverters is relatively high. Or places where production machinery is located but there is no 3-phase power grid, this is also the only solution for businesses. So what is the structure and benefits of a single-phase 220V to three-phase 380V inverter?
We invite you to follow the article below:
1 – What is a single phase inverter?
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.
In Vietnam, all inverters are single-phase 220V, but with some special countries like Japan. There is a different electricity network in Vietnam, so they use a 110V single-phase inverter to produce three-phase 220V, widely used for 220V household electricity.
2 – Anatomy of inverter 220V 1 phase 380V 3 phase out
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.
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. When using a single-phase 220V to 3-phase 380V inverter with a voltage doubling board is the optimal and more cost-effective solution when using a transformer to increase the voltage.
There is a limitation when using a single-phase 220V input to 380V three-phase inverter, which is less life and durability because it is dependent on the voltage doubling circuit.
In addition, it is also important to pay attention when supplying input to the 380V 1-phase 3-phase inverter, it is necessary to follow the instructions correctly to avoid damage. Because compared to normal inverters, the power supply diagram of a single-phase inverter may change slightly to accommodate the voltage doubler circuit.
3 – Use a single-phase 220V inverter to three-phase 380V in any case?
Factories that cannot pull 3-phase 380V electricity to use for machines whose motors cannot be connected to 3-phase 220V are required to use. If the motor of the machine can be re-connected to 3 phase 220V, you do not need to use it.
There is one thing to note when using a single-phase 220V to 3-phase 380V inverter, the electricity costs will increase. The reason is because we use electricity to convert, so when we exceed the power consumption limit, the price will be high. In addition, it is also necessary to choose the appropriate type of conductor and CB to supply enough current to the inverter.
4 – Notes when using single phase inverter
When using a single-phase 220V inverter to three-phase 380V, the input amp is very large. Therefore, when you choose to use this type of inverter, please note the following:
+ It is necessary to choose a conductor with a large cross-section to be able to load enough current for the inverter, in addition, it also helps to prevent the wire from getting hot during operation, limiting fire and explosion.
+ Need to check how many amps the total power supply is. As the total CB usually fluctuates in the range of 60-100ampere, but the inverter operates up to 80% of the allowed limit of the CB, so it will not be safe.
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.
5 – The place to supply reputable and quality 1-phase inverters
With many years of experience in supplying and installing inverters, VPIC is currently the exclusive distributor of inverters for Hiconics in Vietnam. To be able to advise in the best way, you can send motor information such as voltage, capacity and what application to use to email: [email protected]. We will advise the most suitable type of inverter for you: 220V single phase 220V to 3 phase 380V inverter.
For more information, please contact Hotline: 0896 422 224
