Solar power capacitor alternative switch circuitry system for enhanced capacitor life
First Claim
1. An enhanced component solar power system comprising:
- at least one solar photovoltaic source providing a DC photovoltaic input that has two DC power lines;
a parallel inductive element connected across said two DC power lines as part of a path;
alternative switch circuitry connected to said parallel inductive element that establishes a first alternative circuitry path across said DC power lines through said parallel inductive element and a second alternative circuitry path across said DC power lines through said parallel inductive element;
a capacitor path responsive to said alternative switch circuitry in said first alternative circuitry path;
an alternative circuitry path also responsive to said alternative switch circuitry in said second alternative circuitry path; and
a smoothed photovoltaic DC power output connected to said capacitor path in said first alternative circuitry path and said second alternative circuitry path.
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Accused Products
Abstract
Reliability enhanced systems are shown where an short-lived electrolytic capacitor can be replaced by a much smaller, perhaps film type, longer-lived capacitor to be implemented in circuits for power factor correction, solar power conversion, or otherwise to achieve DC voltage smoothing with circuitry that has solar photovoltaic source (1) a DC photovoltaic input (2) internal to a device (3) and uses an enhanced DC-DC power converter (4) to provide a smoothed DC output (6) with capacitor substitution circuitry (14) that may include interim signal circuitry (28) that creates a large voltage variation for a replaced capacitor (16). Switchmode designs may include first and second switch elements (17) and (18) and an alternative path controller (21) that operates a boost controller (22) and a buck controller (23) perhaps with a switch duty cycle controller (32).
433 Citations
20 Claims
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1. An enhanced component solar power system comprising:
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at least one solar photovoltaic source providing a DC photovoltaic input that has two DC power lines; a parallel inductive element connected across said two DC power lines as part of a path; alternative switch circuitry connected to said parallel inductive element that establishes a first alternative circuitry path across said DC power lines through said parallel inductive element and a second alternative circuitry path across said DC power lines through said parallel inductive element; a capacitor path responsive to said alternative switch circuitry in said first alternative circuitry path; an alternative circuitry path also responsive to said alternative switch circuitry in said second alternative circuitry path; and a smoothed photovoltaic DC power output connected to said capacitor path in said first alternative circuitry path and said second alternative circuitry path. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A device with power factor correction having enhanced life comprising:
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operationally active solar photovoltaic power circuitry for said device and having at least one internal, substantially DC device voltage in two DC power lines; an inductive element connected to one of said DC power lines; alternative switch circuitry connected to said inductive element; a capacitor path responsive to said alternative switch circuitry; an alternative circuitry path also responsive to said alternative switch circuitry; a power factor controller to which said operationally active solar photovoltaic power circuitry for said device is responsive; a low ripple controller to which said alternative switch circuitry is responsive; and an internal low ripple DC voltage connected to said capacitor path and said alternative circuitry path and responsive to said low ripple controller.
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Specification