Photovoltaic System Charge Controller Having Buck Converter with Reversed MOSFETS
First Claim
1. A maximum power point tracking charge controller for photovoltaic systems, comprisinga maximum power point tracking charge controller for electrical connection to a photovoltaic array including one or more photovoltaic modules and to a battery bank to control charging of the battery bank with electricity produced by the photovoltaic array, said charge controller having a maximum power point tracking algorithm for tracking the power point voltage of the photovoltaic array at which the photovoltaic array produces maximum power, said charge controller having a buck converter for receiving voltage input from the photovoltaic array and for supplying voltage output from said buck converter to charge the battery bank, said buck converter converting the voltage input to a voltage output that matches the voltage required by the battery bank for charging, said buck converter storing electrical energy when the voltage input is greater than the voltage required by the battery bank for charging, said buck converter comprising an inductor, a first switch, and a second switch comprising a first MOSFET and a second MOSFET connected in series with a parallel diode, wherein said second MOSFET has a configuration that is the reverse of the configuration of said first MOSFET.
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Accused Products
Abstract
A maximum power point tracking charge controller for photovoltaic systems includes a buck converter for receiving the maximum power voltage from a PV array as input and for supplying voltage output to charge a battery bank while converting the voltage input to a voltage output that matches the voltage required by the battery bank for charging. The buck converter includes an inductor, a first switch, and a second switch comprised of a first MOSFET and a second MOSFET connected in series with a parallel diode, wherein the configuration of the second MOSFET is reversed from the configuration of the first MOSFET.
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Citations
17 Claims
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1. A maximum power point tracking charge controller for photovoltaic systems, comprising
a maximum power point tracking charge controller for electrical connection to a photovoltaic array including one or more photovoltaic modules and to a battery bank to control charging of the battery bank with electricity produced by the photovoltaic array, said charge controller having a maximum power point tracking algorithm for tracking the power point voltage of the photovoltaic array at which the photovoltaic array produces maximum power, said charge controller having a buck converter for receiving voltage input from the photovoltaic array and for supplying voltage output from said buck converter to charge the battery bank, said buck converter converting the voltage input to a voltage output that matches the voltage required by the battery bank for charging, said buck converter storing electrical energy when the voltage input is greater than the voltage required by the battery bank for charging, said buck converter comprising an inductor, a first switch, and a second switch comprising a first MOSFET and a second MOSFET connected in series with a parallel diode, wherein said second MOSFET has a configuration that is the reverse of the configuration of said first MOSFET.
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10. A maximum power point tracking charge controller for photovoltaic systems, comprising
a maximum power point tracking charge controller for electrical connection to a photovoltaic array including one or more photovoltaic modules and to a battery bank including one or more batteries to control charging of the battery bank with electricity produced by the photovoltaic array, said charge controller having a maximum power point tracking algorithm for tracking the maximum power point of the photovoltaic array at which the photovoltaic array produces maximum power voltage, said charge controller having a buck converter for receiving the maximum power voltage from the photovoltaic array as voltage input to said buck converter and for supplying voltage output from said buck converter to charge the battery bank, said buck converter converting the voltage input to a voltage output that matches the voltage required by the battery bank for charging, said buck converter storing electrical energy when the voltage input is greater than the voltage required by the battery bank for charging, said buck converter comprising an inductor, a first switch comprising a MOSFET, and a second switch comprising a first n-channel MOSFET and a second n-channel MOSFET connected in series with a parallel diode, wherein said first and second n-channel MOSFETs are arranged back-to-back and the gates of said first and second n-channel MOSFETs are driven from a common gate drive.
Specification