HIGH VOLTAGE PULSE GENERATOR UNIT

Abstract

The present invention describes a high voltage pulse generator unit comprising a primary side, a transformer and a secondary side, wherein the primary side comprises a winding and wherein the secondary side comprises multiple windings and multiple pulse module units (PMUs), and wherein each PMU comprises the winding and a switching element.

Claims

1. High voltage pulse generator unit comprising a primary side, a transformer and a secondary side, wherein the primary side comprises a winding and wherein the secondary side comprises multiple windings and multiple pulse module units (PMUs), and wherein each PMU comprises the winding and a switching element.

2. High voltage pulse generator unit according to claim 1, wherein the primary side comprises one single winding.

3. High voltage pulse generator unit according to claim 1, wherein the secondary side comprises multiple pulse module units (PMUs), wherein one or more PMUs comprise the winding, a rectifier bridge, a capacitor and a switching element.

4. High voltage pulse generator unit according to claim 1, wherein one or more PMUs also comprise a diode, preferably being parallel coupled over the switching element.

5. High voltage pulse generator unit according to claim 1, wherein the switching element is of transistor type, e.g. an IGBT or a FET.

6. High voltage pulse generator unit according to wherein ground is arranged connected to the switching element.

7. High voltage pulse generator unit according to claim 1, wherein the switching element comprises driver circuit containing short-circuit protection.

8. High voltage pulse generator unit according to claim 1, wherein the AC voltage peak-to-peak provided in each PMU is in the range of 1.6-8,000 V, preferably 600-4,000 V, more preferably 1000-3,000 V.

9. High voltage pulse generator unit according to claim 1, wherein each PMU comprises one switching element and wherein ground is arranged in the middle of all switching elements.

10. High voltage pulse generator unit according to claim 1, wherein the number of PMUs is in the range of 2-1,024, preferably in the range of 2-64, more preferably in the range of 4-16.

11. High voltage pulse generator unit according to claim 1, wherein the primary side comprises an H-bridge unit, preferably a phase shifted full bridge (PSFB) unit, which is arranged before the one single primary winding of the primary side.

12. High voltage pulse generator unit according to claim 1, wherein the voltage provided on the primary side is in the range of 600-1,500 V.

13. High voltage pulse generator unit according to claim 11, wherein a power factor correction (PFC) unit is arranged connected to the H-bridge unit.

14. High voltage pulse generator unit according to claim 11, wherein the secondary side is connected to a high voltage unit, preferably a PEF (pulsed electric field) chamber.

15. High voltage pulse generator unit according to claim 1, wherein the high voltage pulse generator unit is arranged to provide bipolar pulses.

Description

DESCRIPTION OF THE DRAWINGS

[0027] In FIG. 1 there is shown one specific embodiment according to the present invention.

[0028] As may be seen, the high voltage pulse generator unit comprises a primary side, a transformer and a secondary side. According to this embodiment, the primary side comprises one single winding and the secondary side comprises multiple pulse module units (PMU). Each PMU comprises one winding, a rectifier bridge, a capacitor and a switching element. Moreover, according to this embodiment, each PMU also comprises a diode, in this case being parallel coupled over the switching element. Furthermore, the switching element is of transistor type, namely an IGBT.

[0029] Moreover, ground is arranged connected to the switching element, and as may be seen, in this case ground is arranged in the middle of all switching elements.

[0030] Furthermore, the secondary side of the high voltage pulse generator unit is connected to a high voltage unit, in this case a PEF (pulsed electric field) chamber.