Integrated solar cell array and power regulator

• US 5,949,212 A
• Filed: 06/05/1997
• Issued: 09/07/1999
• Est. Priority Date: 06/05/1997
• Status: Expired due to Term

• Current Assignee: The Boeing Co.
• Original Assignee: The Boeing Co.
• Inventors: Cherry, Raymond L.
• Primary Examiner(s): Wong, Peter S.
• Assistant Examiner(s): SHIN, KYUNG E
• Application Number:
  US08/869,365
• Time in Patent Office: 824 Days
• Field of Search: 320/101, 136/291, 323/906, 307/46, 307/64, 307/66
• US Class Current: 320/101
• CPC Class Codes: H02J 7/35 with light sensitive cells
• CPC Class Codes: Y02E 10/56 Power conversion systems, e.g. maximum power point trackers

Abstract

A power regulator circuit efficiently regulates electrical power generated by a solar cell array for satellite system load requirements and rechargeable battery needs. The power regulator circuits mounted opposite the solar panel regulate the power generated by the solar array according to a voltage signal generated by a processor. The regulator circuit includes a linear circuit for generating an output signal according to the generated voltage signal; and a resistor strip for dissipating the solar array generated power according to the generated output signal.

Claims

1. A power regulating system for generating regulated power for satellite systems and rechargeable batteries;

the power regulating system comprising;

a solar panel;

a solar array mounted on a first side of the solar panel for generating electrical power;

a control circuit for determining satellite system load requirements and rechargeable battery needs and generating a voltage signal according to the determined satellite system load requirements and rechargeable battery needs; and

a regulator circuit mounted on a second side of the solar panel and electrically coupled to the solar array for regulating the power generated by the solar array according to the generated voltage signal and supplying the regulated power to satellite systems and rechargeable batteries, the regulator circuit further comprising;

a staging circuit for converting the generated voltage signal into a current signal; and

a resistor strip for dissipating the solar array generated power according to the generated current signal, thereby regulating the power generated by the solar array.

2. The power regulating system of claim 1, wherein the control circuit further comprises a rechargeable battery current sensor for determining the charging current of the rechargeable batteries.

3. The power regulating system of claim 1, wherein the regulator circuit is implemented in silicon dye and mounted on a support substrate.

4. The power regulating system of claim 1, wherein the staging circuit comprises stages of operation according to generated voltage signals and the resistor strip comprises multiple resistive paths, each resistive path corresponding to a separate stage of operation.

5. The power regulating system of claim 4, wherein the stages of operation and corresponding resistive paths shunt predetermined levels of solar array generated power.

6. The power regulating system of claim 1, wherein the solar panel is a rigid substrate.

7. The power regulating system of claim 1, wherein the solar panel is a flexible substance.

8. The power regulating system of claim 7, wherein the flexible substance is a polyimide film.

9. The power regulating system of claim 1, wherein the resistor strip comprises at least one circuit trace.

10. The power regulating system of claim 9, wherein the shape and resistive value of the at least one circuit trace are determined according to solar array size and power output and operating voltage of the satellite systems.

11. The power regulating system of claim 1, wherein the resistor strip is a flexible circuit laminate.

12. The power regulating system of claim 1, further comprising:

a control bus for supplying generated voltage signals to the regulator and supplying a rechargeable battery charging current signal to the control circuit, wherein a portion of the control bus being a flexible circuit laminate mounted to the second side of the solar panel; and

a power distribution bus for distributing the regulated power to the satellite systems and rechargeable batteries, wherein portion of the power distribution bus being a flexible circuit laminate mounted to the second side of the solar panel.

13. The power regulating system of claim 1, wherein the regulator is an easily replaceable modular component of the power regulating system.

14. The power regulating system of claim 1, wherein the solar panel with solar array and regulator circuit comprises connecting means for allowing connection and disconnection of the solar panel to the satellite for design upgrade.