Today, the most popular electrostatic generator is the Van de Graaff type
The Van de Graaff generator rotate a insulating belt by a motor's mechanical force. The belt holds a lot of charges (ions) on it.
As a result, they were transported from a low potential place to a high potential place.
On the contrary, the new electrostatic generator carry down an asymmetric shaped charge carrier to more low potential place at first by electrostatic force.
This charge carrier has been accelerated by a strong electrostatic force all the while. As a result, the charge carrier get a lot of kinetic energy.
After the lowest potential point, the charge carrier moves up to high potential place by using the got kinetic energy.
In this climbing way, the charge carrier lost some of the kinetic energy. Because, an electrostatic force forces it behind.
But, fortunately, the electrostatic force is not strong. As a result, the charge carrier can climb up to more high potential place than its start place.
In other words, the charge carrier is carried up to high potential place from low potential start place by electrostatic force difference between downhill and uphill.
The basic theory of electrostatic generating of the new electrostatic generator is the same as that of the Van de Graaff generator.
Only difference between them is kinds of force that is used to carry up charges to high potential,
In the following, I will introduce the basic concept of the both generator pictorially.
figure 20 Explanation of force that is used to carry up a charge carrier to high potential in both generator. .
The generating method of Van de Graaff generator.
The Van de Graaff generator is consist of an insulating belt, a corona discharge pin array and a charge recovery pin array.
The insulating belt was rotated by a motor, and the corona discharge pin array was connected a high potential power supply.
The potential of the recovery electrode was kept at 1 million volts for example.
The generating method is:
1. A lot of charges (ions) is sprayed on the insulating belt by corona discharge pin array at lower potential.
2. The motor rotate the insulating belt and transport it into the recovery electrode that is keeping at 1 million volts,
3. Corona discharge occur between the insulating belt and the 1 million volts recovery pin array. As a result, the charges (ions) is transfered to the recovery electrode from the insulating belt.
This generator does not produce CO2,and other dangerous materials any time. Therefore, the environmental problem can be solved by this generator.
This generator generate electric energy, but its motor need more electric energy. Therefore, the energy crisis can not be solved by this generator.
This generator generate 1 million volts, but miniature size machine can not be made, Because, it need a motor.
Figure 21 The layout of Van de Graaff generator
New generating method using asymmetric electrostatic force
The new electrostatic generator using asymmetric electrostatic force consist of 3 disks.
The upper electrode disk 11 and the lower electrode disk 13 are fixed. There is the charge carrier disk 12 between them. This disk rotate at high speed.
Many charge injection electrode 1, electric field generating electret 2 and charge recovery electrode 4 are located radially on the lower electrode disk 13.
Many injection electrode 1, electret 2 and recovery electrode 4 are located radially on the back face of the upper electrode disk 11, but we can not see them in this figure.
The injection electrodes of the upper and lower disk face each other. The electret and the recovery electrode face each other like the injection electrode.
The injection electrodes are grounded.The electrets have same density charge. Its voltage is 2500 volts for example.
The recovery electrodes have mission of Faraday gauge. They are connected into a condenser. Its voltage is -250 volts for example.
Many gutter shape charge carriers 3 are located radially on the charge carrier disk 12.
Figure 22 A projection figure for new electrostatic generator
The generating method is:Figure 23 Explanation of minimum unit of the new electrostatic generator using asymmetric electrostatic force.
Method of electrostatic generators | |||
Van de Graaff type | Asymmetric electrostatic type | ||
Comparison terms | Charge carrier | Insulating belt | Asymmetric shape conductor |
Force carrying charge carrier | Mechanical force | Asymmetric electrostatic force | |
One million volts | Easy | Difficult | |
Miniature size | Impossible | Possible | |
Environmental problem | Solving is possible | Best solution | |
Energy crisis | Impossible | Best solution |