Impedance matching circuit
View Patent ↗A system for performing ozone water treatment comprises a voltage supply circuit and a plasma eductor reactor. The voltage supply circuit includes an H-bridge controller and driver, a transformer, and an output port. The H-bridge controller and driver are configured to switch the electrical polarity of a pair of terminals. A primary of the transformer is connected to the H-bridge driver and controller. A secondary of the transformer connects in parallel with a first capacitor and in series with an inductor and a second capacitor. The output port connects in parallel with the second capacitor. The plasma eductor reactor includes an electric field generator, a flow spreader, and a diffuser. The electric field generator includes a pair of electrodes that generate an electric field. The flow spreader supplies a stream of oxygen. The diffuser supplies a stream of water. The streams of water and oxygen pass through the electric field.
1. An impedance matching circuit for an H-bridge inverter comprising:
an H-bridge driver configured to switch the electrical polarity of a pair of terminals;
an H-bridge controller configured to send a control signal to said H-bridge driver to control the switching of the electrical polarity;
a transformer including a primary connected to said terminals of said H-bridge driver and a secondary;
an impedance-matching network connected in parallel with said secondary;
an inductor connected in series with said secondary;
an output port connected to said inductor configured for delivering a voltage to a load;
a first capacitor connected in series with said secondary and in parallel with said output port; and
an auto tune signal generator configured to send a signal to said H-bridge controller to set a phase value of said control signal to adjust the phase of said H-bridge driver to approximate a resonant frequency of said secondary.
2. The impedance matching circuit according to claim 1 , further comprising:
a duty cycle generator configured to send a signal to said H-bridge controller to set the duty cycle of said control signal.
3. The impedance matching circuit according to claim 1 , further comprising:
a base frequency generator configured to send a signal to said H-bridge controller to set the frequency of said control signal.
4. The impedance matching circuit according to claim 1 , wherein said impedance matching network includes a capacitor.
5. The impedance matching circuit according to claim 4 , wherein said impedance matching network includes said inductor in series with said capacitor.
6. An impedance matching circuit for an H-bridge inverter comprising:
an H-bridge driver configured to switch the electrical polarity of a pair of terminals;
an H-bridge controller configured to send a control signal to said H-bridge driver to control the switching of the electrical polarity;
a transformer including a primary connected to said terminals of said H-bridge driver and a secondary;
an impedance matching network connected in parallel with said secondary;
an inductor connected in series with said secondary;
an output port connected to said inductor configured for delivering a voltage to a load;
a phase sensor configured to sense a phase of current through said load and said first capacitor; and
an auto tune signal generator configured to send a signal to said controller to set a phase value of said control signal to adjust the phase of the driver to approximate a resonant frequency of said secondary.
7. The impedance matching circuit according to claim 6 , wherein:
said driver comprises an H-bridge driver; and
said controller comprises an H-bridge controller.
8. The impedance matching circuit according to claim 6 , further comprising:
a duty cycle generator configured to send a signal to said controller to set the duty cycle of said control signal.
9. The impedance matching circuit according to claim 6 , further comprising:
a base frequency generator configured to send a signal to said controller to set the frequency of said control signal.
10. The impedance matching circuit according to claim 6 , wherein said impedance matching network includes a capacitor.
11. The impedance matching circuit according to claim 10 , wherein said impedance matching network includes said inductor in series with said capacitor.
12. The impedance matching circuit according to claim 6 , further comprising:
a first capacitor connected in series with said secondary and in parallel with said output port.
13. An impedance matching circuit comprising:
a driver configured to switch the electrical polarity of a pair of terminals;
a controller configured to send a control signal to said driver to control the switching of the electrical polarity;
a transformer including a primary connected to said terminals of said driver and a secondary;
an impedance matching network including a matching capacitor or inductor in series with a matching capacitor connected in parallel with said secondary;
a gain inductor connected in series with said transformer secondary and configured for providing voltage gain in conjunction with the matching capacitor, ballast capacitor and load wind driven in resonance;
an output port connected to said gain inductor and configured for delivering a voltage to a load;
a phase sensor configured to sense a phase of current through said gain inductor and load; and
an auto tune signal generator configured to send a signal to said controller to set a phase value of said control signal to adjust the phase of said driver to approximate a resonant frequency of said secondary.
14. The impedance matching circuit according to claim 13 , further comprising:
an isolation capacitor connected in series between the transformer secondary phase sensor and the impedance matching network and ground; and
a DC power supply connected to said isolation capacitor to create a DC voltage offset voltage between the secondary circuit including the load and ground.