Joel P asked:
how does an electric inverter used at the tail end of either home solar panels or wind generator stay in phase with the incoming household current. It would seem to me that if the phase was just slightly out of time with that from the power company, much of the power produced would be lost.
Here’s what Energy Companies DONT want you to see!
Possibly related posts: (automatically generated)
- Related posts on Household
- Staples Ad 1/03/10 – 1/09/10 FREE and Cheap Items
- How much does household help cost in Hong Kong?
- Tolerance is a policy that great exihibit frequently : sugar-bush
- Related posts on Solar Wind
- McClellan Power & Energy purchases 63 acre site in San Diego …
- Facts About Solar Energy Systems » How to Make Your Own Renewable …
- Related posts on Wind Generator
- windmill manor farm | How to Build Solar Panels and Wind Generator
- How to Build a Wind Generator » How to Make Your Own Renewable Energy
- My Own Analysis – homemade solar panels » How to Make Your Own …
Digg it StumbleUpon Facebook Twitter del.icio.us Google Yahoo!
The phase is locked to the signal from the power company. A PLL keeps it locked to the power frequency and phase.
.
The best inverters use a pulse-width-modulated output and a low-pass power filter for the line frequency (60 Hz or 50Hz). The high voltage DC input is modulated at a rate in the 20-40 kHz range or even higher. The modulation is controlled directly by the line to which the power is fed into. Some of these inverters can run in the high 90% efficiency range.
For the PWM inverter to work, whatever the output of the generator, it must be converted (any phase, any frequency, or even DC) to high voltage DC. This can be done independantly of the line frequency or phase.
.