System and methods for high power DC/DC converter

1. A method for voltage conversion, the method comprising:

generating a plurality of phase-shift modulation signals;

interleaving the phase-shift modulation signals to provide interleaved phase-shift modulation signals; and

controlling a plurality of voltage converters using the interleaved phase-shift modulation signals to convert an input electrical current at an input voltage to an output electrical current at an output voltage, wherein outputs of the voltage converters are coupled in series via rectifiers coupled to respective transformer secondary sides.

2. The method according to claim 1 , further comprising configuring the interleaved phase-shift modulation signals to reduce a current ripple of the input electrical current.

3. The method according to claim 2 , further comprising reducing the current ripple of the input electrical current using the interleaved phase-shift modulation signals.

4. The method according to claim 1 , further comprising configuring the interleaved phase-shift modulation signals to reduce a voltage ripple of the output voltage.

5. The method according to claim 4 , further comprising reducing the voltage ripple of the output voltage using the interleaved phase-shift modulation signals.

6. The method according to claim 1 , wherein the voltage converters each comprise:

a full bridge converter coupled to at least one of the phase-shift modulation signals and the input electrical current, and operable to convert the input electrical current to a first AC electrical current;

a transformer coupled to the full bridge converter, and operable to convert a first voltage of the first AC electrical current to a second voltage of a second AC electrical current; and

a rectifier coupled to the transformer, and operable to convert the second AC electrical current to a DC output current.

7. The method according to claim 1 , further comprising low pass filtering an output of at least one of the voltage converters.

8. The method according to claim 1 , further comprising controlling an output voltage level of the output voltage using phase-shift modulation of the phase-shift modulation signals.

9. The method according to claim 1 , further comprising controlling the output electrical current and the output voltage by deactivating at least one of the voltage converters.

10. A voltage conversion system comprising:

a controller module operable to:

generate a plurality of phase-shift modulation signals; and

interleave the phase-shift modulation signals to provide interleaved phase-shift modulation signals; and

a plurality of voltage converters controlled using the interleaved phase-shift modulation signals, and operable to convert an input electrical current at an input voltage to an output electrical current at an output voltage, wherein outputs of the voltage converters are coupled in series via rectifiers coupled to respective transformer secondary sides.

11. The voltage conversion system according to claim 10 , wherein the controller module is further operable to configure the interleaved phase-shift modulation signals to reduce a current ripple of the input electrical current.

12. The voltage conversion system according to claim 10 , wherein the controller module is further operable to configure the interleaved phase-shift modulation signals to reduce a voltage ripple of the output voltage.

13. The voltage conversion system according to claim 10 , wherein the controller module is further operable to configure the interleaved phase-shift modulation signals to control the output electrical current and the output voltage by deactivating at least one of the voltage converters.

14. The voltage conversion system according to claim 10 , wherein the voltage converters each comprise:

a full bridge converter coupled to at least one of the phase-shift modulation signals and the input electrical current, and operable to convert the input electrical current to a first AC electrical current;

a transformer coupled to the full bridge converter, and operable to convert a first voltage of the first AC electrical current to a second voltage of a second AC electrical current; and

a rectifier coupled to the transformer, and operable to convert the second AC electrical current to a DC output current.

15. The voltage conversion system according to claim 10 , further comprising a low pass filter coupled to an output of at least one of the voltage converters, and operable to low pass filter the output.

16. The voltage conversion system according to claim 10 , wherein outputs of the voltage converters are coupled in series.

17. A method for providing a voltage conversion system, the method comprising:

providing a controller module operable to:

generate a plurality of phase-shift modulation signals; and

interleave the phase-shift modulation signals to provide interleaved phase-shift modulation signals; and

providing a plurality of voltage converters controlled using the interleaved phase-shift modulation signals, and operable to convert an input electrical current at an input voltage to an output electrical current at an output voltage, wherein outputs of the voltage converters are coupled in series via rectifiers coupled to respective transformer secondary sides.

18. The method according to claim 17 , wherein the step of providing the voltage converters further comprises:

providing a full bridge converter coupled to at least one of the phase-shift modulation signals and the input electrical current, and operable to convert the input electrical current to a first AC electrical current;

providing a transformer coupled to the full bridge converter, and operable to convert a first voltage of the first AC electrical current to a second voltage of a second AC electrical current; and

providing a rectifier coupled to the transformer, and operable to convert the second AC electrical current to a DC output current.

19. The method according to claim 17 , further comprising providing a low pass filter coupled to an output of at least one of the voltage converters, and operable to low pass filter the output.

20. The method according to claim 17 , further comprising coupling outputs of the voltage converters in series.