Using corona to our advantage
Has anyone every considered using corona discharge to dissipate electrical charge into the atmosphere on purpose? The system I have in mind could be as follows:
One single conductor is used as a tether, isolated electrically from ground. High up at/near the kite (which is more than 5km high) is flygen and DC/DC converter. A very high voltage is applied between the conducting kite tether and some object that has very high corona discharge (sharp pointed conductors or something). Electrons escape from this object into the atmosphere allowing HV DC current to flow from the bottom of the kite tether, up and into the upper atmosphere.
A DC/DC converter on the ground simply extracts the energy from current flowing between the earth at 0V, and the conducting tether at a higher voltage. The greater the corona discharge, the greater current and hence power that can be transfered this way. No need for a second return conductor. Operating voltage can (and must be) very high, so conductor/tether loss is minimal.
The flygen+DC/DC could maybe even be an electrostatic generator?
Has anyone ever heard of atmospheric electricity? This might help to get the voltages high enough for sufficient corona discharge, or might be a second energy source augmenting the flygen? Apparently, the average voltage potential in the atmosphere is 100V/m (http://en.wikipedia.org/wiki/Atmospheric_electricity). A kite of 5km AGL would then already have 500kV potential between the top of the kiteline and the ground before a generator is even added.
What are you're thoughts? Would such an idea work?
- Wonderful voltages are often found in the sky before they become lightning. The problem is that air is such a good insulator that you'd need a cloud of emitters.On 6-Jan-12, at 10:22 AM, kites4christoff wrote: