Variable power energy harvesting system
First Claim
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1. A single-chip system for harvesting energy from a variable output energy harvesting apparatus comprising:
- energy harvesting apparatus for providing energy input;
a switched mode power supply operably coupled to receive the input of the energy harvesting apparatus, and for providing a system output power signal; and
a control loop having control logic for dynamically adjusting energy harvesting apparatus input to the switched mode power supply, thereby regulating the system output power signal, wherein the control loop further comprises a maximum power point tracking (MPPT) mode and a mode that is configured to exceed an MPPT mode voltage level.
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Abstract
The disclosed invention provides examples of preferred embodiments including systems for harvesting energy from variable output energy harvesting apparatus. The systems include energy harvesting apparatus for providing energy input to a switched mode power supply and a control loop for dynamically adjusting energy harvesting apparatus input to the switched mode power supply, whereby system output power is substantially optimized to the practical. Exemplary embodiments of the invention include systems for harvesting energy using solar cells in boost, buck, and buck-boost configurations.
72 Citations
20 Claims
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1. A single-chip system for harvesting energy from a variable output energy harvesting apparatus comprising:
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energy harvesting apparatus for providing energy input; a switched mode power supply operably coupled to receive the input of the energy harvesting apparatus, and for providing a system output power signal; and a control loop having control logic for dynamically adjusting energy harvesting apparatus input to the switched mode power supply, thereby regulating the system output power signal, wherein the control loop further comprises a maximum power point tracking (MPPT) mode and a mode that is configured to exceed an MPPT mode voltage level. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A system comprising:
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an energy harvesting apparatus configured to provide an energy input; a single chip system comprising; a switched mode power supply operably coupled to receive the input of the energy harvesting apparatus, and configured to provide a system output power signal; and a control loop having control logic configured to dynamically adjust the energy input to the switched mode power supply as a function of battery hysteresis using a maximum power point tracking (MPPT) mode and a mode that is configured to exceed an MPPT mode voltage level. - View Dependent Claims (16)
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17. A system comprising:
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an energy harvesting apparatus for providing energy input; a single chip system comprising; a switched mode power supply operably coupled to receive the input of the energy harvesting apparatus, and configured to provide a system output power signal; and a control loop having control logic configured to dynamically adjust an energy harvesting apparatus input to the switched mode power supply, wherein the control loop further comprises a maximum power point tracking (MPPT) mode and a mode that is configured to exceed an MPPT mode voltage level. - View Dependent Claims (18, 19, 20)
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Specification