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Open your check-book, wide...... Posted by MI-Roger [Email]  (#882) [Profile/Gallery]
(more from MI-Roger) on Sat, 6 Oct 2007 19:07:07
In Reply to: How do you sink up a power inverter with house current, Chaz, Sat, 6 Oct 2007 15:41:24 Members do not see ads below this line. - Help Keep This Site Online - Signup |
To do this legally, you will need equipment costing many thousands of dollars. Illegally, the most robust system - which is the utility system - will drive the weaker system into synchronicity with the grid. Try it illegally and get caught, the fine will be many times the cost of the correct equipment.
The utility company will specify which equipment you must use so that your wind generator is in synchronous operation with the grid. Hopefully the cost has come down in recent years. My experience is a local person who tried it illegally 15 years ago and got caught.
The wind generator probably generates DC power. This get turned into a crude sinewave AC signal thru use of SCR's which probably receive their triggering signal from the local grid, hence synching the currents. The voltage goes thru step-up transformers to match the distribution system voltage. You will also need a switch to open the link to the grid when the grid is off due to a power outage.
The tricky part is what synchs the signal during a power outage? During the outage it wouldn't matter, but upon re-energization the robust grid could blow your expensive SCR's. The inertia of the power grid against phase shifts is so strong that it will cause spinning generators to instantly stop (with resulting destruction) if the switches connecting them to the power grid are closed wothout peerfect synchronous operation.
posted by 69.134.114...
_______________________________________ Saabs owned: 2008 9-5 Aero Sedan, sold at 227K miles 2006 9-3SC 2.0T - Wife's daily driver 2000 Viggen Convertible - Sold May, 2022 1964 Quantum IV Formula Car - Retirement project 2000 9-5lpt Sedan, sold at 318K miles
, Sun, 7 Oct 2007 07:51:50
, Sun, 7 Oct 2007 22:53:31, Sat, 6 Oct 2007 19:07:07 <-- Viewing This Message
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