The Most Simple and Efficient ROTOVERTER Setup on the Internet

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Introduction: The Most Simple and Efficient ROTOVERTER Setup on the Internet

Items used for the experiment:

1 electric motor (4 kw 3 ph ). The rotor must rev very easy by hand.

2 capacitors (10 uF 400 V each).

Wiring diagram: The motor must be wired in Rotoverter mode, i.e. in STAR configuration (not DELTA).

Pole nr.1 and 2 must be connected to the capacitors. The 2 capacitors are in parallel.

Pole nr. 1 and 3 must be connected to the grid (220V in my country).

When connected to the grid the rev rise until 2840 - 2850 rot/min and the current drops from 4.5 to 0.7 Amps.

If I disconnect the capacitors the current drop to 0.2 Amps. When I connect a load the current rise to 1.2 Amps, but when I reconnect the capacitors the current drops to 0.0 Amps. If I increase the load beyond the sweet point, the curent start to rise until 4.5 Amps when the motor halts. You may see the demonstration on youtube:

Step 1: The Motor Used

Step 2: The Capacitor Used

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    7 Comments

    You may see that video at https://www.youtube.com/watch?v=9k9Zd9H7vn8

    With no load, I have 1 Amps and 2850 rot/min (as labeled on motor plate). When I feed a small electric motor from one of the capacitor the amperage drops to 0.4, 0.5 Amps and the revs are 2990 rot/min. Strange, very strange. I'll post a video on youtube.

    Interesting. Could you share some more details on how it works and how you use it.

    And it's ROTOVERTER, not ROTORVERTER

    No offence, but it was invented google for that.

    ROTORVERTER is a unknown word, what is the application of it?

    Hey. Do you mind giving a little background info for those of us unfamiliar with what a rotoverter is? I'm off to Google, but thought it might be really good to put in your write up for others