Connecting 3-Phase Inverter (Liteon Evo 600) to 1-Phase Motor: Connection & Error Solutions

At the beginning, I apologize for the topic because it was already like that, but it is closed.


Well, I have a problem and it is possible that they were created in the equipment buying phase.
I have a Liteon evo 600 1x230AC inverter that outputs ordinary U, V, W 230 V at the output

I have an engine

After connecting the motor to the 230 network everything is fine, I thought that I could connect to the two outputs of the inverter and the slime in the same way, but the engine starts, when starting up to 30Hz, it somehow turns above, the inverter throws an error and stops, man thought that there is a shift in phases and the engine will not work like that?

Is there an option to fasten it with this hardware configuration?

I connected in a triangle, but the inverter made an error that the motor was damaged and functional

Connection to the engine:

The capacitor resistance depends on the frequency.
You made a school mistake. It won't work.
Replace the motor with a suitable one.

Added after 3 [minutes]:

And measure the windings if it is sometimes not a three-phase motor.

Disconnect the capacitor, at the moment you have an incomplete triangle because the bridge on the first terminals Z1 V2 is missing. Then, as standard, from the inverter U, V, W to individual bridges.

osiniak75 wrote:

Disconnect the capacitor, at the moment you have an incomplete triangle because the bridge on the first terminals Z1 V2 is missing. Then, as standard, from the inverter U, V, W to individual bridges.

I tried this before I disconnected the capacitors, I made a full triangle, and the inverter crashed the error that "the motor or the wire is damaged".

If I am not mistaken, the motor will not start in such a system because it lacks a capacitor, the system crashes with the capacitor because the condenser.

Start at 50Hz with the smallest acceleration ramp. But why do you need an inverter so offensive?

Set the inverter to about 10A of rated current.

Apparently, the motor, despite the fact that it has three windings, is not adapted to work on three phases, it probably has windings of different impedance and the inverter treats this as damage.

Strumien swiadomosci swia wrote:

And measure the windings if it is sometimes not a three-phase motor.

And he saw the nameplate ... Probably not, let him see it and it does not suggest incompetence of the author of the topic.

osiniak75 wrote:

Disconnect the capacitor, ....

Not a bad idea, although some (!) Single-phase motors were powered by some (!) Inverters without disconnecting the capacitor.
It is important that it is not a motor with a compact start-up phase, i.e. with THREE terminals. We connect three outputs from the inverter to them and ... sometimes such a system works.
The choice of the inverter is crucial. No inverter manufacturer provides for such a connection and most even forbid it, but we have 10 LS Ic inverters with 10 fans for several years and it is OK.
As far as I know, people from LS officially do not confirm this possibility, but they unofficially recommend these inverters in such situations.
In the case of inverters from other companies, the effect of such a connection may be "different". You have to test, but what for? Isn't it better to use a 3f engine? Sometimes, however, the situation is really difficult and such tying of the shoe with an earthworm is the only acceptable solution.

osiniak75 wrote:

Apparently, the motor, despite the fact that it has three windings, is not adapted to work on three phases, it probably has windings of different impedance and the inverter treats this as damage.

You hit the nail on the head, buddy. This engine never will not work with the inverter. Replace the motor with a normal 220 ? / 400 ?. So much.

Krzysztof Kamienski wrote:

osiniak75 wrote:
Apparently, the motor, despite the fact that it has three windings, is not adapted to work on three phases, it probably has windings of different impedance and the inverter treats this as damage.
You hit the nail on the head, buddy. This motor will never work with an inverter. Replace the motor with a normal 220 ? / 400 ?. So much.

One crap rushes another. Nightmare.
The motor is SINGLE-PHASE and has TWO windings, not three. If the beginnings and ends of the windings are led into the creamer, the direction of rotation can be changed by appropriate connections. However, the windings are always connected in series giving three connections as in a 3f motor, so they can be connected to an inverter with a 3f output powered from ONE phase. Whether such a system works depends primarily on the internal design and software of the inverter. The inverter settings are also important. Ie lower frequency and ramp.
Probably the inverter of the author of the topic is not suitable for such an unusual application. You would need to test with an LS inverter. However, this is probably not what the author of the topic meant?
On the other hand, much simpler and cheaper phase regulators on a triac are used to regulate the RPM of induction motors. Almost like dimmers.

Sorry, I meant the CLAMPS, not the windings. Here is my mistake. However, as for the rest of my colleague's argument, I have divided opinions. Especially this triac with regard to induction motors.

jack63 wrote:

3f powered from ONE phase.

What does one or two or three things have to do with it? Secondly, hasn't Dear Colleague met a single-phase motor with a THREE winding capacitor? Nightmare.

Krzysztof Kamienski wrote:

Especially this triac with regard to induction motors.

Well, my friend saw little, read, was interested.
Before BLDC motors came into widespread use, such regulation was common. For example, low-power fan motors in air conditioners were so controlled.

Krzysztof Kamienski wrote:

jack63 wrote:
3f powered from ONE phase.
What does one or two or three things have to do with it?

And this has to do with the fact that the RMS of the voltage "created" by the inverter is almost the same as the voltage of that phase, i.e. 230V RMS, and there is no fear of damaging the motor.
I can see that my colleague has "forgotten" how a frequency converter, commonly known as an inverter, works.

Krzysztof Kamienski wrote:

Dear colleague, did not meet a single-phase motor with a working capacitor with THREE windings? Nightmare.

I saw not one, but they were two-speed motors.
The nightmare, however, is the colleague's strong pressure on glass, which manifests itself in his statements on topics about which his colleague has a vague idea, such as cooling. Sad...

jack63 wrote:

I saw not one, but they were two-speed motors.

Really? And not full-swing sometimes?

Based on our own and customers' experience, we used EURA DRIVES and DELTA ELECTRONICS inverters to control cutters that had single-phase motors with a capacitor. The capacitor and the starting circuit were blown out, the windings were connected to the inverter (3 taps) and it worked. Of course, it was not what it should have been and you had to combine with the settings, but the clients could work.
There is no rule as to the manufacturers of inverters, it is important how it reads the asymmetry at the output.

Hello, I know that the subject is archival, but I have literally one question.
A single-phase motor with a capacitor is 200W, and when powering two windings from a single-phase inverter, it will also have the same power and torque? It's about increasing the power, not changing the speed.

@ resistor 240 No. The impedance of the main and auxiliary windings (for the capacitor) is different. The inverter will probably report an error.

I understand, so even if the inverter would start, I would burn the auxiliary winding, I think right?

Maybe not so much "burned" as the engine would not work properly. Complete asymmetry of the rotating magnetic field. The capacitor shifts the phase by 90 degrees, the inverter by 120.

Thank you, it confirms me that this is an abnormal idea