Systems and methods to balance solar panels in a multi-panel system
First Claim
Patent Images
1. An apparatus, comprising:
- a photovoltaic energy production unit to generate electricity; and
a management unit coupled between the photovoltaic energy production unit and a series connection of energy production units, the management unit having at least a first switch, the photovoltaic energy production unit to generate a first current to provide electricity to the series connection of energy production units via the first switch of the management unit, the management unit to allow a second current larger than the first current to flow through the series connection of energy production units.
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Abstract
Systems and methods to balance currents among a plurality of photovoltaic units connected in series. In aspect, a management unit is coupled between a photovoltaic energy production unit and a string of energy production units. The management unit has an energy storage element (e.g., a capacitor) connected to the photovoltaic energy production unit. The management unit further has a switch to selectively couple to the energy storage element and the photovoltaic energy production unit to the string. The management unit allows the current in the string to be larger than the current in the photovoltaic energy production unit.
267 Citations
20 Claims
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1. An apparatus, comprising:
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a photovoltaic energy production unit to generate electricity; and a management unit coupled between the photovoltaic energy production unit and a series connection of energy production units, the management unit having at least a first switch, the photovoltaic energy production unit to generate a first current to provide electricity to the series connection of energy production units via the first switch of the management unit, the management unit to allow a second current larger than the first current to flow through the series connection of energy production units. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method, comprising:
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providing a management unit to couple a solar energy production unit to a series connection of energy production units, the management unit having a first switch and an energy storage unit coupled to the solar energy production unit; and determining at least one parameter to control the first switch; wherein, when the first switch is turned on, the solar energy production unit provides a first current to the series connection of energy production units and the energy storage unit provides a second current, a third current in the series connection of energy production units being equal to or larger than a sum of the first current and the second current; and wherein, when the first switch is turned off, the solar energy production unit and the energy storage unit are disconnected from the series connection of energy production units, and the management unit provides at least one path for the series connection of energy production units. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification