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Author Topic: 100% energy saver in the market  (Read 41874 times)

Offline gyulasun

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Offline wattsup

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Re: 100% energy saver in the market
« Reply #61 on: March 12, 2010, 02:08:13 PM »
Commercial and industrial watt meters supplied by utilities generally include a power factor multiplier reading on the meter. That multiplier goes from 1-10 and based on that reading, the total watts consumed will be multiplied by that number to get the final billing wattage. So the name of the game is to keep that multiplier as low as possible.

Basically, the magic number is 20 minutes since it takes at least 20 minutes of peek demand consumption to slide the multiplier out to its maximum reading. Let's say you have a very huge electric motor that takes a good 30 minutes to start up. Well the multiplier is a slide reading and will show the maximum amperage used during a steady 20 minute time slice of that motor start up. If peek draw can be held down to 3-4 minutes or half the rated amps, then the multiplier will not have enough time to get to the maximum, saving loads of money for the industry. But homes do not have such a multiplier?????

Most of the electronic power factor controllers will sense the load on an electric motor and if maximum load is not required, the controller will cut out a slice of the sine wave from the feed source to only let enough pass to meet the load. Actually it is not such a big deal since everything works at a rather slow 60 hz, you have more then enough time to cut out a part of the sine wave according to the load demand. It's not like guys here doing tests at a few megahertz, then trying to cut out a part of those frequencies. At 60 hertz, you have more then enough time to sense load and control feed.

Offline mediamex

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Re: 100% energy saver in the market
« Reply #62 on: July 03, 2012, 07:54:07 AM »