BIPOLAR SOLID STATE MARX GENERATOR
First Claim
Patent Images
1. A bipolar high-power pulse generator comprising:
- a DC power source;
a DC-DC converter connected to the DC power source;
a H-bridge switching circuit connected in parallel with the DC-DC converter, wherein the H-bridge switching circuit comprises four switches (A+, A−
, B+, B−
) connected in a H configuration with a load connected across the bridge; and
a controller connected to the DC-DC converter and the H-bridge switches (A+, A−
, B+, B−
).
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Abstract
A high-voltage bipolar rectangular pulse generator using a high efficiency solid-state boosting front-end and an H-bridge output stage is described. The topology of the circuit generates rectangular pulses with fast rise time and allows easy step-up input voltage. In addition, the circuit is able to adjust positive or negative pulse width, dead-time between two pulses, and operating frequency. The intended application for such circuit is algae cell membrane rupture for oil extraction, although additional applications include biotechnology and plasma sciences medicine, and food industry.
84 Citations
28 Claims
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1. A bipolar high-power pulse generator comprising:
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a DC power source; a DC-DC converter connected to the DC power source; a H-bridge switching circuit connected in parallel with the DC-DC converter, wherein the H-bridge switching circuit comprises four switches (A+, A−
, B+, B−
) connected in a H configuration with a load connected across the bridge; anda controller connected to the DC-DC converter and the H-bridge switches (A+, A−
, B+, B−
). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A method of treating one or more biological cells, water, or a pumpable food within a treatment chamber comprising the steps of:
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providing a bipolar high-power pulse generator comprising (a) a DC power source, (b) a DC-DC converter connected to the DC power source, wherein the DC-DC converter comprises two or more boost cells connected together, wherein each boost cell comprises a positive input node, a negative input node, a switch (Si) connected in series with an inductor wherein the series connected switch (Si) and inductor are connected in parallel with the positive and negative nodes, a diode connected in series with a capacitor wherein the series connected diode and capacitor are connected in parallel with the switch (Si) and the capacitor is connected in parallel with a positive output node and a negative output node, (c) a H-bridge switching circuit connected in parallel with the DC-DC converter, wherein the H-bridge switching circuit comprises four switches (A+, A−
, B+, B−
) connected in a H configuration with the treatment chamber connected across the bridge, and (d) a controller connected to the DC-DC converter and the H-bridge switches (A+, A−
, B+, B−
); anddelivering one or more pulses to the treatment chamber, wherein (a) a positive pulse is delivered whenever the controller sequentially turns the H-bridge switches (A+, B−
) on, turns the switch (Si) on, turns the switch (Si) off, and turns the H-bridge switches (A+, B−
) off, and/or (b) a negative pulse is delivered whenever the controller sequentially turns the H-bridge switches (A−
, B+) on, turns the switch (Si) on, turns the switch (Si) off, and turns the H-bridge switches (A−
, B+) off. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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Specification