High Efficiency Interleaved Solar Power Supply System

• US 20150130284A1
• Filed: 11/21/2014
• Published: 05/14/2015
• Est. Priority Date: 03/15/2013
• Status: Active Grant

• Current Assignee: Ampt, LLC
• Original Assignee: Ampt, LLC
• Inventors: Ledenev, Anatoli
• Granted Patent: US 9,397,497 B2
• Time in Patent Office: Days
• US Class Current: 307/82
• CPC Class Codes: H01L 31/02008 for solar cells or solar cell modules
• CPC Class Codes: H02J 1/102 being switching converters H02J1/108, H02J1/12 take precedence
• CPC Class Codes: H02J 2300/24 of photovoltaic origin
• CPC Class Codes: H02J 3/38 Arrangements for parallely feeding a single network by two or more generators, converters or transformers
• CPC Class Codes: H02J 3/381 Dispersed generators
• CPC Class Codes: H02J 3/46 Controlling of the sharing of output between the generators, converters, or transformers
• CPC Class Codes: H02M 1/0067 Converter structures employing plural converter units, other than for parallel operation of the units on a single load
• CPC Class Codes: H02M 1/0077 Plural converter units whose outputs are connected in series
• CPC Class Codes: H02S 40/30 Electrical components
• CPC Class Codes: Y02E 10/56 Power conversion systems, e.g. maximum power point trackers

Abstract

A high efficiency solar power system combining photovoltaic sources of power (1) can be converted by a base phase DC-DC photovoltaic converter (6) and an altered phase DC-DC photovoltaic converter (8) that have outputs combined through low energy storage combiner circuitry (9). The converters can be synchronously controlled through a synchronous phase control (11) that synchronously operates switches to provide a conversion combined photovoltaic DC output (10). Converters can be provided for individual source conversion or phased operational modes, the latter presenting a combined low photovoltaic energy storage DC-DC photovoltaic converter (15) at string or individual panel levels.

Claims

1. A method of highly efficiency delivering solar energy power comprising the steps of:

accepting a first power from a first photovoltaic source of power;

base phase DC-DC converting said first power to create a base phase DC power delivery;

accepting a second power from a second photovoltaic source of power;

altered phase DC-DC converting said second power to create an altered phase DC power delivery;

synchronous phase controlling said step of base phase DC-DC converting with said step of altered phase DC-DC converting; and

combining said base phase DC power delivery with said altered phase DC power delivery to provide a conversion combined photovoltaic DC output.

2. A method of highly efficiency delivering solar energy power as described in claim 1 wherein said step of combining said base phase DC power delivery with said altered phase DC power delivery comprises the step of series power combining said base phase DC power delivery with said altered phase DC power delivery.

3. A method of highly efficiency delivering solar energy power as described in claim 2 wherein said step of series power combining said base phase DC power delivery with said altered phase DC power delivery comprises the step of adding voltages from said base phase DC power delivery and said altered phase DC power delivery.

4. A method of highly efficiency delivering solar energy power as described in claim 3 wherein said step of adding voltages from said base phase DC power delivery and said altered phase DC power delivery comprises the step of low inductance adding voltages from said base phase DC power delivery and said altered phase DC power delivery.

5. A method of highly efficiency delivering solar energy power as described in claim 1 wherein said step of synchronous phase controlling comprises the step of synchronously duty cycle controlling said step of base phase DC-DC converting with said step of altered phase DC-DC converting.

6. A method of highly efficiency delivering solar energy power as described in claim 5 wherein said step of synchronously duty cycle controlling comprises the step of common duty cycle controlling said step of base phase DC-DC converting with said step of altered phase DC-DC converting.

7. A method of highly efficiency delivering solar energy power as described in claim 5 and further comprising the steps of:

establishing said conversion combined photovoltaic DC output as a converted DC photovoltaic input to a photovoltaic DC-AC inverter; and

inverting said converted DC photovoltaic input into a photovoltaic AC power output.

8. A method of highly efficiency delivering solar energy power as described in claim 7 wherein said step of controlling further comprises the step of photovoltaic inverter input coordinated controlling said step of base phase DC-DC converting with said step of altered phase DC-DC converting.

9. A method of highly efficiency delivering solar energy power as described in claim 8 wherein said step of photovoltaic inverter input controlling comprises the step of photovoltaic inverter input optimization controlling said step of base phase DC-DC converting with said step of altered phase DC-DC converting.

10. A method of highly efficiency delivering solar energy power as described in claim 1 wherein said step of synchronous phase controlling comprises the step of common timing signal controlling said step of base phase DC-DC converting with said step of altered phase DC-DC converting.

11. A method of highly efficiency delivering solar energy power as described in claim 1 wherein said step of synchronous phase controlling comprises the step of opposing phase controlling said step of base phase DC-DC converting with said step of altered phase DC-DC converting.

12. A method of highly efficiency delivering solar energy power as described in claim 11 wherein said step of opposing phase controlling comprises the step of augmented photovoltaic output sweet spot controlling said step of base phase DC-DC converting with said step of altered phase DC-DC converting.

13. A method of highly efficiency delivering solar energy power as described in claim 12 wherein said step of augmented photovoltaic output sweet spot controlling comprises the step of cold operational regime sweet spot controlling said step of base phase DC-DC converting with said step of altered phase DC-DC converting.

14. A method of highly efficiency delivering solar energy power as described in claim 12 wherein said step of augmented photovoltaic output sweet spot controlling comprises the step of converted power generation output sweet spot controlling said step of base phase DC-DC converting with said step of altered phase DC-DC converting.

15. A method of highly efficiency delivering solar energy power as described in claim 13 wherein said steps of base phase DC-DC converting and altered phase DC-DC converting each comprise the step of buck DC-DC power converting said input powers, and wherein said step of combining said base phase DC power delivery with said altered phase DC power delivery comprises the step of series inductor combining said base phase DC power delivery with said altered phase DC power delivery to provide a conversion combined photovoltaic DC output.

16. A method of highly efficiency delivering solar energy power as described in claim 15 wherein said step of series inductor combining comprises the step of low photovoltaic energy inductance combining said base phase DC power delivery with said altered phase DC power delivery to provide a conversion combined photovoltaic DC output.

17. A method of highly efficiency delivering solar energy power as described in claim 12 wherein said steps of base phase DC-DC converting and altered phase DC-DC converting each comprise the step of utilizing a tapped magnetically coupled inductor arrangement having an inductor tap, and wherein said step of combining said base phase DC power delivery with said altered phase DC power delivery comprises the step of utilizing an inductor connected between said inductor taps.

18. A method of highly efficiency delivering solar energy power as described in claim 17 wherein said step of utilizing an inductor connected between said inductor taps comprises the step of utilizing a low photovoltaic energy storage inductor connected between said inductor taps.

19. A method of highly efficiency delivering solar energy power as described in claim 1 and further comprising the step of photovoltaic boundary output controlling said step of base phase DC-DC converting and said step of altered phase DC-DC converting.

20. A method of highly efficiency delivering solar energy power as described in claim 11 wherein said step of combining said base phase DC power delivery with said altered phase DC power delivery comprises the step of establishing a double maximum voltage arrangement.

21. A method of highly efficiency delivering solar energy power as described in claim 1 and further comprising the step of establishing said conversion combined photovoltaic DC output as a high multi operational regime output.

22-46. -46. (canceled)

47. A high efficiency solar energy power system comprising:

a first photovoltaic source of power;

a base phase DC-DC photovoltaic converter having a base phase switched output;

a second photovoltaic source of power;

an altered phase DC-DC photovoltaic converter having an altered phase switched output relative to said base phase switched output;

a synchronous phase control to which said base phase DC-DC photovoltaic converter and said altered phase DC-DC photovoltaic converter are switch timing responsive; and

combiner circuitry responsive to said base phase switched output and said altered phase switched output providing a conversion combined photovoltaic DC output.

48-50. -50. (canceled)

51. A high efficiency solar energy power system as described in claim 47 wherein said combiner circuitry comprises series power configured circuitry.

52. A high efficiency solar energy power system as described in claim 51 wherein said combiner circuitry responsive to said base phase switched output and said altered phase switched output providing a conversion combined photovoltaic DC output comprises additive voltage circuitry that adds an output voltage of said base phase switched output with an output voltage of said altered phase switched output.

53. A high efficiency solar energy power system as described in claim 52 wherein said combiner circuitry comprises a low photovoltaic energy storage inductor.

54. A high efficiency solar energy power system as described in claim 47 wherein said synchronous phase control comprises a duty cycle controller.

55. A high efficiency solar energy power system as described in claim 54 wherein said duty cycle controller comprises a common duty cycle controller to which said base phase DC-DC photovoltaic converter and said altered phase DC-DC photovoltaic converter are each responsive.

56. A high efficiency solar energy power system as described in claim 47 wherein said synchronous phase control comprises an opposing phase controller.

57. A high efficiency solar energy power system as described in claim 56 wherein said base phase DC-DC photovoltaic converter and said altered phase DC-DC photovoltaic converter each comprise a buck DC-DC power converter, and wherein said combiner circuitry comprises a series combination inductor.

58. A high efficiency solar energy power system as described in claim 56 wherein said base phase DC-DC photovoltaic converter and said altered phase DC-DC photovoltaic converter each comprise a tapped magnetically coupled inductor arrangement having an inductor tap, and wherein said combiner circuitry comprises a series combination inductor connected between said inductor taps.