High power converter comprising low power switches and a switch control device for generating a pulse with a reference value and at least two control values

Patent metadata

Field	Value
Publication number	US-9641100-B2
Application number	US-201214342296-A
Country	US
Kind code	B2
Filing date	Aug 30, 2012
Priority date	Sep 1, 2011
Publication date	May 2, 2017
Grant date	May 2, 2017

Abstract

A system for converting a first voltage into a second voltage includes input terminals and output terminals, switching members disposed between the terminals which can convert voltage, and a device for controlling the switching members. The device includes a cell for controlling a switching member, and a member for managing and supplying the control cell. The member is connected to the control cell by a link allowing the simultaneous transmission of a control signal and electrical energy. The member includes a device for generating a pulse, and which includes at least two different control intervals.

First claim

What is claimed is:

1. A system for the conversion of a first electric voltage into a second electric voltage, the system comprising:
at least two input voltage terminals;
at least two output voltage terminals;
switching elements connected in series between the at least two input terminals and the at least two output terminals to form a group of switching elements, the switching elements configured to convert the first voltage into the second voltage; and
a control device to control the switching elements, wherein the control device includes:
control cells for the switching elements;
a control and supply unit connected to the control cells to control the control cells, the control and supply unit having a generator configured to generate a control pulse to control the switching elements, the pulse having a first voltage control slot to allow establishment of current, a second voltage slot corresponding to maintenance of the current, and a third voltage control slot corresponding to a return of the current to a zero value;
a transmission connection element connected between the control cells and the control and supply unit to permit a simultaneous transmission of the control pulse and electrical energy from the control and supply unit to the switching elements; and
an electrical insulator arranged between a corresponding one of the control cells and the control and supply unit, the electrical insulator including a single primary winding, a plurality of secondary windings, and a plurality of magnetic circuits.

2. The system according to claim 1 , wherein the transmission connection element comprises the single primary winding.

3. The system according to claim 2 , wherein each secondary winding is electrically connected to an input of a corresponding control cell, and wound around a corresponding magnetic circuit.

4. The system according to claim 2 , wherein the single primary winding passes through the magnetic circuits and electrically connected to an output of the control and supply unit.

5. The system according to claim 1 , wherein a first value of the control pulse during the first voltage control slot is at least twice as great as a second value of the control pulse during the second voltage control slot.

6. The system according to claim 5 , wherein the second value satisfies the following equation:
U 2=( N×Uc )/ M,
where U2 represents the second value, N represents the number of switching elements of the corresponding group, N being an integer equal to or greater than 2, Uc is the input voltage of the corresponding control cell, and M represents a number of corresponding turns of the secondary windings.

7. The system according to claim 1 , wherein a duration of the first control slot is between 50 ns and 200 ns.

8. A system for the conversion of a first electric voltage into a second electric voltage, the system comprising:
switching elements connected in series to form a group of switching elements, the switching elements configured to convert the first voltage into the second voltage; and
a control device to control the switching elements, wherein the control device includes:
control cells for the switching elements;
a control and supply unit connected to the control cells to control the control cells, the control and supply unit having a generator configured to generate a control pulse to control the switching elements, the pulse having a first voltage control slot to allow establishment of current, a second voltage slot corresponding to maintenance of the current, and a third voltage control slot corresponding to a return of the current to a zero value;
a transmission connection element connected between the control cells and the control and supply unit to permit a simultaneous transmission of the control pulse and electrical energy from the control and supply unit to the switching elements; and
an electrical insulator arranged between a corresponding one of the control cells and the control and supply unit, the electrical insulator including a single primary winding, a plurality of secondary windings, and a plurality of magnetic circuits.

9. The system according to claim 8 , wherein the transmission connection element comprises the single primary winding.

10. The system according to claim 9 , wherein each secondary winding is electrically connected to an input of a corresponding control cell, and wound around a corresponding magnetic circuit.

11. The system according to claim 9 , wherein the single primary winding passes through the magnetic circuits and electrically connected to an output of the control and supply unit.

12. The system according to claim 8 , wherein a first value of the control pulse during the first voltage control slot is at least twice as great as a second value of the control pulse during the second voltage control slot.

13. The system according to claim 12 , wherein the second value satisfies the following equation:
U 2=( N×Uc )/ M,
where U2 represents the second value, N represents the number of switching elements of the corresponding group, N being an integer equal to or greater than 2, Uc is the input voltage of the corresponding control cell, and M represents a number of corresponding turns of the secondary windings.

14. A system for the conversion of a first electric voltage into a second electric voltage, the system comprising:
switching elements to convert the first voltage into the second voltage; and
a control device to control the switching elements, wherein the control device includes:
control cells for the switching elements; and
a control and supply unit connected to the control cells to control the control cells, the control and supply unit having a generator configured to generate a control pulse to control the switching elements, the pulse having a first voltage control slot to allow establishment of current, a second voltage slot corresponding to maintenance of the current, and a third voltage control slot corresponding to a return of the current to a zero value;

an electrical insulator arranged between the control cells and the control and supply unit, the electric insulator including a single primary winding connected between the control cells and the control and supply unit to permit a simultaneous transmission of the control pulse and electrical energy from the control and supply unit to the switching elements, a plurality of secondary windings, and a plurality of magnetic circuits through which the single primary winding passes through.

Assignees

• Permuy Alfred
• Ge Energy Power Conversion Technology Ltd

Inventors

• Permuy Alfred

Classifications

• H02M3/1588

  comprising at least one synchronous rectifier element (H02M3/1582, H02M3/1584 take precedence) · CPC title

• H02M7/537 Primary

  using semiconductor devices only, e.g. single switched pulse inverters · CPC title

• H02M7/06

  using discharge tubes without control electrode or semiconductor devices without control electrode · CPC title

• H02M2003/1586

  Electricity · mapped topic

• H03K17/04126

  in bipolar transistor switches · CPC title