"I canna change the the laws of physics Jim!"
Therefore, according to Scotty, U.S.S. Enterprise (and the laws of physics), the power USED in an electrical circuit cannot exceed the power supply coming IN to the circuit. The maximum power a 110V, 15A circuit can SAFELY provide is approximately 1700W before wiring starts to get warm, fire risk increases, and breakers blow. This number is not actually fixed as it depends on your incoming line voltage, but the practical limits are set by electrical code to ensure regardless of your electrical conditions, safety is always controlled.
Some homes may only have roughly 110V supplied at the outlet, while other (like here), we actually get around 124 volts at the outlet. This voltage is variable as it depends on your location in the country, your city, your building, your local wiring, and time of day, how hot it is outside (people using air conditioner all over your state) etc. etc.
If a machine wants to draw 3000W, you need a circuit that can provide 3000W. Like mentioned, there is no way a typical residential 110V outlet can provide this.....
But....there IS a device that converts TWO 110V outlets to a single 220V output at higher wattage....but there is a requirement. The two 110V outlets used as the source HAVE to be on DIFFERENT phases in the electrical panel. This is how you get your 220V at home....each hot wire comes a different 1/2 of your electrical panel and is 180 degrees out of phase, therefore the potential voltage between each is 220V.http://www.quick220.com/
This will allow you to convert two 110V 15A circuits to a single higher wattage 220V output.
Both the laws of physics and Scotty will remain happy.
Again, you require two outlets on different phases of the electrical panel though. So, you need two outlets close to each other, and also on different phases. This may not exist in your location/room/building.
I am not 100% sure I would want to use it for a continuous on, high power draw device either...almost like you are cheating mother nature or something. Better make sure your building/insurance folks don't have any concerns over a device like this.